Luminous Landscape Forum
Raw & Post Processing, Printing => Printing: Printers, Papers and Inks => Topic started by: mearussi on July 26, 2019, 06:58:23 pm
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I'm trying to find out whether there actually is a truly "archival" glossy/luster type paper available.
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Hahnemuhle Photorag Pearl and Hahnemuhle Photorag Baryta.
I'm trying to find out whether there actually is a truly "archival" glossy/luster type paper available.
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Hahnemuhle Photorag Pearl and Hahnemuhle Photorag Baryta.
+1, the first two papers that come to mind for me as well :) Also, Canson Platine, Red River Palo Duro Soft Gloss, Epson legacy Platine.
There are others as well no doubt. Aardenburg Imaging & Archives needs to start compiling a list. It only takes time and money ;)
Easy to sort OBA-free media with a low cost UV-LED "flashlight". Or refer to the Aardenburg light fade test database or Ernst Dinkla's extensive spectral data sets for modern media at http://www.pigment-print.com/spectralplots/spectrumviz_1.htm (http://www.pigment-print.com/spectralplots/spectrumviz_1.htm) for guidance on OBA-free media. Choosing OBA-free media is thus a straight-forward and enduser-verifiable way to avoid media which exhibit light induced low-intensity staining (LILIS) regardless of any TiO2 content.
If the media is both OBA-free and TiO2-free, then a spectrophotometer like the Xrite i1Pro2 can pick that up by inspecting for fall-off or lack thereof in the 380 to 420 nm range. Both TiO2 and OBAs cause a sharp downturn in the spectral reflectance curve in this wavelength range, hence it is hard to deconvolute the curve if one or both are present.Thus, X-ray fluorescence (XRF) or other analytical techniques are required to identify the TiO2 in the presence of coatings also containing OBAs. That said, essentially all resin coated (RC) photo media contain both TiO2 and OBAs, hence as a class of media, RC photo papers all exhibit the LILIS media yellowing phenomenon to varying degrees and thus should be considered only moderately "archival" at best, non "archival" at worst.
The media manufacturers could help in a big way to sort these material choices out and provide more media that don't have the LILIS problem, but I'm not sure they would want to willingly share this information, and at this point in time, I'm not sure they even understand the LILIS problem exists....it all takes time. Don't shoot the messenger ;D
cheers,
Mark
http://www.aardenburg-imaging.com
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Thank you both, I'll have to take a look at them. The only one I've ever used is the Canson Platine so I'll have to compare that to the others.
Does anyone have a favorite?
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Here's another one, Felix Schoeller rag silk satin (https://www.felix-schoeller.com/en_en/business-unit/photographic-digital-printing-papers/products/j24000-true-rag-silk-310.html).
Brian.
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Thank you both, I'll have to take a look at them. The only one I've ever used is the Canson Platine so I'll have to compare that to the others.
Does anyone have a favorite?
Photo Rag Pearl. Tests well for longevity with all the current OEM pigment ink sets, and has a unique yet homogeneous (not obviously paper grain-oriented) surface texture I'm very fond of, separate and distinct from other non RC luster/gloss type media. OBA-free with high CIELAB L* max whitepoint and only slightly warm white (CIELAB b* value approximately equal to 2.0 under D50 illuminant). Excellent L* min (Dmax) and low bronzing and differential gloss (as good as it gets without additional spray coatings) when used with current OEM printer manufacturer ink sets.
cheers,
Mark
http://www.aardenburg-imaging.com
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Photo Rag Pearl. Tests well for longevity with all the current OEM pigment ink sets, and has a unique yet homogeneous (not obviously paper grain-oriented) surface texture I'm very fond of, separate and distinct from other non RC luster/gloss type media. OBA-free with high CIELAB L* max whitepoint and only slightly warm white (CIELAB b* value approximately equal to 2.0 under D50 illuminant). Excellent L* min (Dmax) and low bronzing and differential gloss (as good as it gets without additional spray coatings) when used with current OEM printer manufacturer ink sets.
cheers,
Mark
http://www.aardenburg-imaging.com
Sounds like a good paper for me to check out.
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Though it is a bit on the warm side, I do a lot of printing on Museo Silver Rag. It has a really good black point.
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Yes, by all means Mark’s ( and Ernst’s plots data) are the best references for paper white info. I’ve never read anything by a paper supplier that is at all useful.
Mark, I am a little confused about what pigment whiteners are being used in the Canson Platine and Epson cloned Platine and Breathing Color Lyve media. I thought they used titanium white pigment, similar to what is used in acrylic artists paints. What exactly is Ti02. I know it contains Titanium pigment. How does it differ from what is being used in Platine.
By the way folks, you can ignore Wilhelm’s longevity data as it is listed for rc media full of oba because he has them listed as some of the most permanent of any of the papers made.
John
+1, the first two papers that come to mind for me as well :) Also, Canson Platine, Red River Palo Duro Soft Gloss, Epson legacy Platine.
There are others as well no doubt. Aardenburg Imaging & Archives needs to start compiling a list. It only takes time and money ;)
Easy to sort OBA-free media with a low cost UV-LED "flashlight". Or refer to the Aardenburg light fade test database or Ernst Dinkla's extensive spectral data sets for modern media at http://www.pigment-print.com/spectralplots/spectrumviz_1.htm (http://www.pigment-print.com/spectralplots/spectrumviz_1.htm) for guidance on OBA-free media. Choosing OBA-free media is thus a straight-forward and enduser-verifiable way to avoid media which exhibit light induced low-intensity staining (LILIS) regardless of any TiO2 content.
If the media is both OBA-free and TiO2-free, then a spectrophotometer like the Xrite i1Pro2 can pick that up by inspecting for fall-off or lack thereof in the 380 to 420 nm range. Both TiO2 and OBAs cause a sharp downturn in the spectral reflectance curve in this wavelength range, hence it is hard to deconvolute the curve if one or both are present.Thus, X-ray fluorescence (XRF) or other analytical techniques are required to identify the TiO2 in the presence of coatings also containing OBAs. That said, essentially all resin coated (RC) photo media contain both TiO2 and OBAs, hence as a class of media, RC photo papers all exhibit the LILIS media yellowing phenomenon to varying degrees and thus should be considered only moderately "archival" at best, non "archival" at worst.
The media manufacturers could help in a big way to sort these material choices out and provide more media that don't have the LILIS problem, but I'm not sure they would want to willingly share this information, and at this point in time, I'm not sure they even understand the LILIS problem exists....it all takes time. Don't shoot the messenger ;D
cheers,
Mark
http://www.aardenburg-imaging.com
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Mark, I am a little confused about what pigment whiteners are being used in the Canson Platine and Epson cloned Platine and Breathing Color Lyve media. I thought they used titanium white pigment, similar to what is used in acrylic artists paints. What exactly is Ti02. I know it contains Titanium pigment. How does it differ from what is being used in Platine.
TiO2 is Titanium Dioxide, a common white pigment used in lots of applications. It has an excellent white point which is why it's used in lots of commercial paints. Unfortunately, for our purposes it it is not as inert as once thought to be and can decompose over time with light exposure. The other commonly used chemical whitener is barium sulfate found in baryta papers. I have not seen any papers in the scientific literature that point to chemical breakdown issues analogous to titanium dioxide. Barium sulfate has a long history of use in photography for improving the reflectivity of paper.
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TiO2 is Titanium Dioxide, a common white pigment used in lots of applications. It has an excellent white point which is why it's used in lots of commercial paints. Unfortunately, for our purposes it it is not as inert as once thought to be and can decompose over time with light exposure. The other commonly used chemical whitener is barium sulfate found in baryta papers. I have not seen any papers in the scientific literature that point to chemical breakdown issues analogous to titanium dioxide. Barium sulfate has a long history of use in photography for improving the reflectivity of paper.
TiO2 acts as a catalysis producing ozone from the NOx in the atmosphere. In a confined space, like the inside of an enclosed picture frame, the ozone builds up and over time will degrade the paper and ink. This is why any paper containing TiO2 cannot be considered archival if it's going to be framed. The effect will be worse if acrylic is used instead of glass since acrylic passes more UV. Conversely the effect can be attenuated if a UV blocking glass or plastic is used. But best yet is just to use a paper without TiO2.
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TiO2 acts as a catalysis producing ozone from the NOx in the atmosphere. In a confined space, like the inside of an enclosed picture frame, the ozone builds up and over time will degrade the paper and ink. This is why any paper containing TiO2 cannot be considered archival if it's going to be framed. The effect will be worse if acrylic is used instead of glass since acrylic passes more UV. Conversely the effect can be attenuated if a UV blocking glass or plastic is used. But best yet is just to use a paper without TiO2.
I think this is a little more complicated. I just took a look at the paper by the French scientists. Yes, there is formation of ozone but the paper I'm reading notes that it requires a clear surface of TiO2 for the reaction to take place. They used glass plates coated with TiO2 and exposed the plate to a synthetic atmosphere. They used near UV light in one test and sunlight in a second. It's important to note that TiO2 is the bottom layer in inkjet paper, coating the paper base and the ink receptive surface is on top of that. I'm unsure what the level of nitrogen oxides are in a typical indoor viewing environment but it may not be high enough to matter much. In addition, the illumination source may not have enough energy at the surface to make a big difference. All this being said, there is a risk in using TiO2 coated inkjet paper in terms of print permanence. As to how much color degradation will take place and over what time period remains to be determined. If you are concerned about long term stability of inkjet prints it is advisable to avoid such papers.
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I am still unclear as to which kind of whitening agent is used in the Canson Platine and Canson Rag Photographique, or the Breathing Color canvas media? Are they some kind of proprietary formula?
John
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I think this is a little more complicated. I just took a look at the paper by the French scientists. Yes, there is formation of ozone but the paper I'm reading notes that it requires a clear surface of TiO2 for the reaction to take place. They used glass plates coated with TiO2 and exposed the plate to a synthetic atmosphere. They used near UV light in one test and sunlight in a second. It's important to note that TiO2 is the bottom layer in inkjet paper, coating the paper base and the ink receptive surface is on top of that. I'm unsure what the level of nitrogen oxides are in a typical indoor viewing environment but it may not be high enough to matter much. In addition, the illumination source may not have enough energy at the surface to make a big difference. All this being said, there is a risk in using TiO2 coated inkjet paper in terms of print permanence. As to how much color degradation will take place and over what time period remains to be determined. If you are concerned about long term stability of inkjet prints it is advisable to avoid such papers.
When resin coated photo papers were introduced in the late 1960s-early1970s, notable field failures in the PE/TiO2 layer started to be reported soon thereafter, namely cracking and delamination of the PE layers in prints on display, yellow and reddish micro spots of silver tarnish forming in B&W RC papers, etc. The industry responded by incorporating more anti-oxidants and other chemistry changes in the PE/TiO2 coatings. Research into these issues pointed to the TiO2 as a photo reactive material where the light exposed TiO2 generated free-radicals which in turn created hydrogen peroxides which in turn tarnished the silver particles in B&W RC prints as well as embrittled the PE. After another decade or so the photographic industry had finally "tamed" these issues, but only to the extent that the color chromogenic dyes in popular RC color photos would fade noticeably before the PE/TiO2 showed cracking, yellowing, and/or delamination. Hence, dye stability rather than RC media deterioration was once again the limiting factor in print longevity during that era. Also, because the residual color couplers in silver gelatin RC color prints had thermal staining/yellowing issues of their own, and many prints weren't always processed correctly which also contributed to yellowish stain formation, any observed yellowing of the RC paper was always attributed to these mechanisms, not the OBA/TiO2 yellowing connection (LILIS). Hence, it's only in this modern inkjet era where residual color coupler chemistry and/or poor processing has been taken out of the print longevity litany of concerns and high quality pigmented inks can withstand much higher light exposure doses than chromogenic color dyes of the 1 hour photofinishing era, that we are now beginning to rediscover the inherent material limitations of RC media.
kind regards,
Mark
http://www.aardenburg-imaging.com
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I am still unclear as to which kind of whitening agent is used in the Canson Platine and Canson Rag Photographique, or the Breathing Color canvas media? Are they some kind of proprietary formula?
John
I have tried both Canson papers. They do not have any OBAs and the Canson website says that Rag Photgraphique is treated with adding natural minerals to the paper during processing. It does not say what these are. Both papers have the same whiteness according to the product sheet.
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I am still unclear as to which kind of whitening agent is used in the Canson Platine and Canson Rag Photographique, or the Breathing Color canvas media? Are they some kind of proprietary formula?
John
Yes, proprietary no doubt which gives certain fine art inkjet media on the market today a very high whitepoint L* value and a near neutral color without resorting to OBAs, but this chemistry also produces a strongly alkaline coating which in turn makes the inkjet receptor coating susceptible to phenolic yellowing... yet another yellowing issue unrelated to the LILIS yellowing phenomenon (I hope to publish an advisory on phenolic yellowing and how to avoid it in the near future :). More research needed, however).
My XRF evaluation of Platine and several other papers back in 2015 was not extensive enough for me provide you any more insight on the whitening pigments used in Platine other than to say I did confirm these whitening pigments did not incorporate TiO2. That was the "smoking gun" I was looking for in the various papers I tested. Testing required renting access time to a portable XRF at a local conservation lab here in Massachusetts (i.e., the Williamstown Art Conservation Center). Funding has kept me from pursuing this work any further, but again, I was looking for the TiO2 and OBA connection and XRF helped me connect those dots. In fact, I also looked at some of the so-called "Baryta" papers, like Canson Baryta photographique because they showed evidence of the lILIS problem as well in my light fade testing at the time. Sure enough, a number of the glossy/luster papers sold as "true Baryta" contained some barium sulfate, but, wait for it, they also contain TiO2 hence more evidence that OBAs and TiO2 don't play well together in modern media.
cheers,
Mark
http://www.aardenburg-imaging.com
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Yes, proprietary no doubt which gives certain fine art inkjet media on the market today a very high whitepoint L* value and a near neutral color without resorting to OBAs, but this chemistry also produces a strongly alkaline coating which in turn makes the inkjet receptor coating susceptible to phenolic yellowing... yet another yellowing issue unrelated to the LILIS yellowing phenomenon (I hope to publish an advisory on phenolic yellowing and how to avoid it in the near future :). More research needed, however).
Wouldn't any phenolic yellowing come from residual lignin in the paper or do the coating materials contain aromatic hydrocarbons that are subject to oxidation? If it is the coating, is there a difference between matte and gloss papers?
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Interesting. So these papers are sensitive to nitrogen dioxide in the environment that causes phenolic yellowing. ND coming from gas heating, air conditioners, ozone auto fumes, chemical floor detergents, certain plastics, etc.
So for them, showing behind glass or plexi is critical, and exhibitions of mounted work with no protection is asking for trouble, especially with the magnetic attractive qualities that inkjet receptor coatings add to the mix.
Rag Photographique and Platine being 100% cotton should have no lignin.
Yes, proprietary no doubt which gives certain fine art inkjet media on the market today a very high whitepoint L* value and a near neutral color without resorting to OBAs, but this chemistry also produces a strongly alkaline coating which in turn makes the inkjet receptor coating susceptible to phenolic yellowing... yet another yellowing issue unrelated to the LILIS yellowing phenomenon (I hope to publish an advisory on phenolic yellowing and how to avoid it in the near future :). More research needed, however).
My XRF evaluation of Platine and several other papers back in 2015 was not extensive enough for me provide you any more insight on the whitening pigments used in Platine other than to say I did confirm these whitening pigments did not incorporate TiO2. That was the "smoking gun" I was looking for in the various papers I tested. Testing required renting access time to a portable XRF at a local conservation lab here in Massachusetts (i.e., the Williamstown Art Conservation Center). Funding has kept me from pursuing this work any further, but again, I was looking for the TiO2 and OBA connection and XRF helped me connect those dots. In fact, I also looked at some of the so-called "Baryta" papers, like Canson Baryta photographique because they showed evidence of the lILIS problem as well in my light fade testing at the time. Sure enough, a number of the glossy/luster papers sold as "true Baryta" contained some barium sulfate, but, wait for it, they also contain TiO2 hence more evidence that OBAs and TiO2 don't play well together in modern media.
cheers,
Mark
http://www.aardenburg-imaging.com
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Wouldn't any phenolic yellowing come from residual lignin in the paper or do the coating materials contain aromatic hydrocarbons that are subject to oxidation? If it is the coating, is there a difference between matte and gloss papers?
Traditional photographs have never been observed to exhibit phenolic yellowing AFAIK, but it's a well known issue in the conservation of textiles. The key ingredients are an alkaline environment (garment being washed in an alkaline detergent and not completely rinsed), a phenolic compound like BHT which is often added to plastic (like garment bags used to cover textiles in storage), and NOx. Put these ingredients together and phenolic yellowing will occur. With microporous inkjet coatings, the porosity plus alkalinity of the ink receptor coating is the perfect incubator. The phenol compounds diffuse into the media from sources like adhesives, BHT in plastic bags, some paint fumes, dry mount tissues, etc. NOX arrives via air borne contamination and absorption into the microporous coating. And bright yellow stains can then form, in a matter of only hours or days, but sometimes it take a bit longer. Traditional silver gelatin processes process out as nearly pH neutral, so the alkalinity needed to boost the reaction isn't there. Phenolic yellowing of modern media, as far as I can tell, is a new symptom for photo conservators to wrestle with that has arrived on the scene with microporous inkjet receptor coatings.
Over the years I have seen numerous examples of bright yellow stains appearing under hard-to-document environmental conditions on inkjet prints in the real world, and I didn't understand the cause until recently. I also couldn't replicate the problem in my lab until recently. Now I can, and that's the first step in truly understanding how it gets caused in the real world. The manufacturers advise customers who have had the problem just to just stick the affected print in sunlight for a few hours, and the yellow will fade back to colorless state (that's largely true, but still an unsettling proposition to the print owner). Anyway, it's time for me to set up some more controlled studies in order to figure out what the range of susceptibility is for the variety of inkjet receptor coatings used in inkjet printing today.
cheers,
Mark
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Ouch Mark, I hadn't thought of dry mount tissues as a source of contamination. So what do you use instead to hold the print flat?
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I think this is a little more complicated. I just took a look at the paper by the French scientists. Yes, there is formation of ozone but the paper I'm reading notes that it requires a clear surface of TiO2 for the reaction to take place. They used glass plates coated with TiO2 and exposed the plate to a synthetic atmosphere. They used near UV light in one test and sunlight in a second. It's important to note that TiO2 is the bottom layer in inkjet paper, coating the paper base and the ink receptive surface is on top of that. I'm unsure what the level of nitrogen oxides are in a typical indoor viewing environment but it may not be high enough to matter much. In addition, the illumination source may not have enough energy at the surface to make a big difference. All this being said, there is a risk in using TiO2 coated inkjet paper in terms of print permanence. As to how much color degradation will take place and over what time period remains to be determined. If you are concerned about long term stability of inkjet prints it is advisable to avoid such papers.
After all the problems Ctein had I see no reason to take any chance with any papers that contain TiO2 especially when there are viable alternatives.
As an example, I called BC and asked about their new 100% cotton paper River Stone Satin Rag and was told it did contain TiO2. Now I no longer have any interest in testing it, so this information save me both time and money.
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I certainly don’t want to speak for Mark, especially since he is still evaluating these issues with little or no budget to do so and we are lucky to know anything, but I believe he told me that the heat melting of the thermoplastic tissue releases BHT that can react with other airborne chemicals to produce staining.
Cold pressure adhesive mounting seems to be safer IF it doesn’t contain problematic chemicals as in preservatives, etc. I have talked to many higher-end mounting specialists, even the big ones in NY, and I can’t find anyone who will tell me what actually is in their adhesives and what their longevity characteristics are. The only thing they will ever tell you is that they are “acid free” because that is what the manufacturers tell them.
I have many Platine prints that I have drymounted to 8 ply rag board with Seal tissue, and none of them have discolored. But the oldest are only a few years old.
John
Ouch Mark, I hadn't thought of dry mount tissues as a source of contamination. So what do you use instead to hold the print flat?
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I certainly don’t want to speak for Mark, especially since he is still evaluating these issues with little or no budget to do so and we are lucky to know anything, but I believe he told me that the heat melting of the thermoplastic tissue releases BHT that can react with other airborne chemicals to produce staining.
Cold pressure adhesive mounting seems to be safer IF it doesn’t contain problematic chemicals as in preservatives, etc. I have talked to many higher-end mounting specialists, even the big ones in NY, and I can’t find anyone who will tell me what actually is in their adhesives and what their longevity characteristics are. The only thing they will ever tell you is that they are “acid free” because that is what the manufacturers tell them.
I have many Platine prints that I have drymounted to 8 ply rag board with Seal tissue, and none of them have discolored. But the oldest are only a few years old.
John
Thanks John, there's still so much we don't know about archivability.
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Ouch Mark, I hadn't thought of dry mount tissues as a source of contamination. So what do you use instead to hold the print flat?
When I was still doing dry mounting of photos I used Fusion 4000 which is a low temperature dry mount tissue. I don't know what the thermoplastic they use to make it as I can't find a specification sheet. I still have some traditional B/W photos that have been mounted with this material from back in the early 1980s and those show no degradation. Mark is likely correct that inkjet media pose new issues for conservationists to study.
To answer your question about mounting, I can only tell you how I approach the issue. For papers up to 17x22 (I don't print on rolls so that's the largest size for me), I leave a one inch border on all sides. I use Mylar photo corners on foam board and cut the overmat so that it completely covers the unprinted border. I use Nielsen frames with enough springs on the back to make sure the print is firmly fixed. Last summer I went back to an office installation where about 16 prints have been hanging for 11 years to check on how the colors were holding up (standard office illumination on for about 14 hours a day). They still looked good and I did not see any buckling or waviness in the prints. They were all 13x19 inch prints in 16x20 inch frames. I used standard acrylic glazing.
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Ouch Mark, I hadn't thought of dry mount tissues as a source of contamination. So what do you use instead to hold the print flat?
I have evolved to an adhesive-free style of mounting/framing for my personal work. Would be easier to show in a video sometime, but I'll try to provide some insight with a modest verbal description here.
First I prefer the beauty of wood frame for my work, so I use wood frames, the caveat being to seal the rabbets with frame sealing tape (e.g. Lineco frame sealing tape). This tape looks like a white paper tape, but it has an internal aluminum foil carrier, so it isolates both the wood and even its own adhesive from the print, mount board and overmatte when used. It eliminates any concern about off gassing from the wood discoloring the edges of the print.
Second, I print with wide margins or trim borderless when I want a borderless look. For my borderless prints, I print on a matte fine art paper such as Moab Entrada natural 300gsm. Framers all advise that placing a photograph in direct contact with glazing is bad practice, but they learned this from experience with silver gelatin prints. Gelatin is gelatin which means at moderately high humidity (70%RH which is a very real world result in many regions of the world) it reverts to gel state. then as humidity drops it blocks and sticks to the glass. However, a fine art Matte paper like Moab Entrada does not have a gelatin binder and the microporous silica in its binder acts as an anti-blocking layer to prevent the well known "ferrotyping" issue with traditional photos. Hence, placing the matte fine art media in direct contact with the glazing is a totally safe practice in my situation, and in fact it gives the print nearly the same visual "pop" that folks get with other face mounted acrylic print methods yet retains total reversibility. If the acrylic scratches, simply disassemble the piece, remove the print and replace the acrylic.
Third, I add a 2 ply conservation matte/mound board behind the print to serve as additional moisture buffering material in the framed print's microclimate environment. Then I lay in an oversized 1/16 inch PE foam liner sheet into the frame followed by a conservation grade foam board and finish off with framing points. Then the excess PE foam is easily trimmed with a utility knife (cuts like butter). The PE foam is doing a couple of things. It is first and foremost a vapor barrier, not a perfect one, but good enough to stabilize the microclimate in the frame to mitigate daily/weekly/monthly RH swings which when severe enough contribute to cockling of some artwork on paper over time. It is also a dust jacket but hidden underneath the foam core board rather than placed on the back of the frame (I can't tell you how many torn dust jackets on the back of frames I've seen over the years, my approach avoids that problem). Lastly it cushions the print and Matt board assembly to even out any pressure points in the package and thus helps to ensure the print expands and contracts uniformly over long periods of seasonal RH cycles.
For my prints where I want an overmatte, I simply print a wide margin border (e.g., 2.5, 3, 4 or more inches of margin around the image) such that the final print size matches the overmatte, mount board, and frame's inner dimensions. This eliminates the time-consuming practice of T-hinging, corner mounting, etc and gets rid of any adhesives inside the framed print microclimate. One just inserts the glazing into the frame, then the overmatte when used, then the print, then the 2 or 4 ply mount board, then drop in the PE foam layer, finally the foam core backer board, and finish off with framing points. I concede my technique of wide margins lends itself to 24 and 44 inch printers better than the smaller prosumer desktop models, but the time and labor savings are tremendous, i.e., worth it to consider stepping up to a 24 inch printer over a 17 inch desktop model. I often print the image with a fine stroke line which shows where to cut, and then the image, and the overmatte, mounting, and frame components all self align..not tedious measurements to get image and overmatte looking perfectly centered.
I've used this approach to framing my work for several years, and so far so good. I also routinely print at up to 32x40, so I can confirm my method works well up to that size. I don't have any need to go bigger with my personal work, but I'd guess the technique could be adapted to larger pieces, perhaps going to a stiffer backing board, slightly thicker PE foam, and a thicker acrylic glazing sheet for larger pieces.
I hope that describes how I avoid adhesive mounting techniques entirely when printing and framing fine art inkjet papers.
cheers,
Mark
http://www.aardenburg-imaging.com
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I have evolved to an adhesive-free style of mounting/framing for my personal work. Would be easier to show in a video sometime, but I'll try to provide some insight with a modest verbal description here.
First I prefer the beauty of wood frame for my work, so I use wood frames, the caveat being to seal the rabbets with frame sealing tape (e.g. Lineco frame sealing tape). This tape looks like a white paper tape, but it has an internal aluminum foil carrier, so it isolates both the wood and even its own adhesive from the print, mount board and overmatte when used. It eliminates any concern about off gassing from the wood discoloring the edges of the print.
Second, I print with wide margins or trim borderless when I want a borderless look. For my borderless prints, I print on a matte fine art paper such as Moab Entrada natural 300gsm. Framers all advise that placing a photograph in direct contact with glazing is bad practice, but they learned this from experience with silver gelatin prints. Gelatin is gelatin which means at moderately high humidity (70%RH which is a very real world result in many regions of the world) it reverts to gel state. then as humidity drops it blocks and sticks to the glass. However, a fine are Matte paper like Moab Entrada does not have a gelatin binder and the microporous silica in its binder acts as an anti-blocking layer to prevent the well known "ferrotyping" issue with traditional photos. Hence, placing the matte fine art media in direct contact with the glazing is a totally safe practice in my situation, and in fact it gives the print nearly the same visual "pop" and that folks get with other face mounted acrylic print methods yet retains total reversibility. If the acrylic scratches, simply disassemble the piece, remove the print and replace the acrylic.
Third, I add a 2 ply conservation matte/mound board behind the print to serve as a moisture buffering material in the framed print's microclimate environment. Then I lay in an oversized 1/16 inch PE foam liner sheet into the frame followed by a conservation grade foam board and finish off with framing points. Then the excess PE foam is easily trimmed with a utility knife (cuts like butter). The PE foam is doing a couple of things. It is first and foremost a vapor barrier, not a perfect one, but good enough to stabilize the microclimate in the frame to mitigate daily/weekly/monthly RH swings which when severe enough contribute to cockling of some artwork on paper over time. It is also a dust jacket but hidden underneath the foam core board rather than placed on the back of the frame (I can't tell you how many torn dust jackets on the back of frames I've seen over the years, my approach avoids that problem). Lastly it cushions the print and Matt board assembly to even out any pressure points in the package and thus helps to ensure the print expands and contracts uniformly over long periods of seasonal RH cycles.
For my prints where I want an overmatte, I simply print a wide margin border (e.g., 2.5, 3, 4 or more inches of margin around the image) such that the final print size matches the overmatte, mount board, and frame's inner dimensions. This eliminates the time-consuming practice of T-hinging, corner mounting, etc and gets rid of any adhesives inside the framed print microclimate. One just inserts the glazing into the frame, then the overmatte when used, then the print, then the 2 or 4 ply mount board, then drop in the PE foam layer, finally the foam core backer board, and finish off with framing points. I concede my technique of wide margins lends itself to 24 and 44 inch printers better than the smaller prosumer desktop models, but the time and labor savings are tremendous, i.e., worth it to consider stepping up to a 24 inch printer over a 17 inch desktop model. I often print the image with a fine stroke line which shows where to cut, and then the image, and the overmatte, mounting, and frame components all self align..not tedious measurements to get image and overmatte looking perfectly centered.
I've used this approach to framing my work for several years, and so far so good. I also routinely print at up to 32x40, so I can confirm my method works well up to that size. I don't have any need to go bigger with my personal work, but I'd guess the technique could be adapted to larger pieces, perhaps going to a stiffer backing board, slightly thicker PE foam, and a thicker acrylic glazing sheet for larger pieces.
I hope that describes how I avoid adhesive mounting techniques entirely when printing and framing fine art inkjet papers.
cheers,
Mark
http://www.aardenburg-imaging.com
Great information Mark, thank you. It's nice to know that the glazing can touch the print without damage. But does this hold true for the Photo Rag Pearl you recommended as well? Since most of my work is color, my concern is a loss of color saturation and dmax if I use a matte paper.
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Great information Mark, thank you. It's nice to know that the glazing can touch the print without damage. But does this hold true for the Photo Rag Pearl you recommended as well? Since most of my work is color, my concern is a loss of color saturation and dmax if I use a matte paper.
Well, you are certainly safe using gloss/luster media with my wide margin technique and an overmatte to give the traditional air gap, but if truth be told, I've used HN Ph Rag Pearl in borderless configurations as well, and so far so good after several years on display. The only caveat here, is that I spray the HN PH Rag Pearl with a couple of coats of Premier Print shield (or you can use HN protective spray, Moab desert varnish with equal results). This spraying step is a PITA, but it eliminates all bronzing and differential gloss, plus it seals the print surface with a thin and conformal acrylic polymer layer which should be fine against the glazing.
There's no question it takes more image editing care and skill to get great color and tonality with a fine art matte paper compared to printing on glossy/luster media, but the final results under glazing are rather amazing and surprising. With glossy/luster media the viewer really needs to be at a near normal viewing angle to achieve the high Dmax look. The richness tends to fall of noticeably with off-angle viewing. However, with matte fine art papers, the print viewing angle is much more tolerant of off-axis viewing, and the glazing really does impart to the matte papers far more "pop" and richness of the blacks in the image than the physics/optics of 0/45 spectrophotometer measurements actually account for. Hence, I started out using more HN Photo Rag Pearl than Moab Entrada Natural when I first worked out my printing/framing methods, but now almost all of my work is on the Entrada Natural 300gsm.
cheers,
Mark
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It’s interesting that you do that Mark.
About a year ago I started suggesting to clients that framing with prints touching the plexi inside a frame with acid free foamcor or rag board ( better) backing is a much cheaper and viable option for the duration of a show. You avoid the expense of mounting to dibond and all that weight added, or mounting with some questionable substrate like Sinatra or the most common bad choice Gator Board. I can’t tell you how many beautiful big prints I’ve done were mounted by clients to gator. I hate to think about it.
In my experience this method has been very successful. I have had four 30x40 ish prints hanging in my home framed in wooden frames this way for 15 years, mostly matte rag media and sprayed with Premiere Art uv varnish and they are in perfect condition, exposed to daylight every day. I thought I would have to replace them in a year but I never did. One had a moth creep inside it but it wasn’t well sealed on the back, that’s important. 🙂 I have three Platine prints in the 20x30 size framed this way that still look perfect for 3 years. I don’t have a lot of humidity in my house and studio however. That could be a huge issue it seems to me, but maybe they could be perfectly sealed to keep moisture out.
Having said all that I’m still reluctant to tell galleries to SELL prints framed this way for permanent display. I might change my mind though as we learn more. I also don’t know if this method would work for 40x60 and larger prints, pressed against the glass like that. I’m pretty sure rc prints would be fine but matte cotton prints may ripple some, without some kind of internal bracing ....don’t know. I need to try it though.
Too many things to think about. I wish the big museums would put some resources into studying these display issues. If they have I haven’t heard about it.
John
Great information Mark, thank you. It's nice to know that the glazing can touch the print without damage. But does this hold true for the Photo Rag Pearl you recommended as well? Since most of my work is color, my concern is a loss of color saturation and dmax if I use a matte paper.
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As usual, Mark, an extremely helpful post. Thanks!
My question: what are the UV considerations for your approach? With Entrada Natural, do you consider it necessary to use glazing that includes UV protection or apply a spray that includes that protection?
Mark
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Great post Mark. Can you provide a source for the PE foam liner sheets you use?
Thanks.
Paul
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Well, you are certainly safe using gloss/luster media with my wide margin technique and an overmatte to give the traditional air gap, but if truth be told, I've used HN Ph Rag Pearl in borderless configurations as well, and so far so good after several years on display. The only caveat here, is that I spray the HN PH Rag Pearl with a couple of coats of Premier Print shield (or you can use HN protective spray, Moab desert varnish with equal results). This spraying step is a PITA, but it eliminates all bronzing and differential gloss, plus it seals the print surface with a thin and conformal acrylic polymer layer which should be fine against the glazing.
There's no question it takes more image editing care and skill to get great color and tonality with a fine art matte paper compared to printing on glossy/luster media, but the final results under glazing are rather amazing and surprising. With glossy/luster media the viewer really needs to be at a near normal viewing angle to achieve the high Dmax look. The richness tends to fall of noticeably with off-angle viewing. However, with matte fine art papers, the print viewing angle is much more tolerant off off axis viewing, and the glazing really does impart to the matte papers far more "pop" and richness of the blacks in the image than the physics/optics of 0/45 spectrophotometer measurements actually account for. Hence, I started out using more HN Photo Rag Pearl than Moab Entrada Natural when I first worked out my printing/framing methods, but now almost all of my work is on the Entrada Natural 300gsm.
cheers,
Mark
More good info Mark, thanks again. I'll have to try that.
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It’s interesting that you do that Mark.
About a year ago I started suggesting to clients that framing with prints touching the plexi inside a frame with acid free foamcor or rag board ( better) backing is a much cheaper and viable option for the duration of a show. You avoid the expense of mounting to dibond and all that weight added, or mounting with some questionable substrate like Sinatra or the most common bad choice Gator Board. I can’t tell you how many beautiful big prints I’ve done were mounted by clients to gator. I hate to think about it.
John
So what's wrong with Gatorboard? I thought it was a favorite since it doesn't warp.
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Mark, one more question. Why the Moab 300gsm double sided instead of the 290gsm single sided?
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One thing is it’s highly acidic and not good for cotton media.
Gatorfoam is not recommended for archival framing as the make-up is polystyrene foam sandwiched between two sheets of wood-fiber veneer which contains a formaldehyde-releasing chemical. It also dents easily and unlike dibond or 8 ply rag board, has to be handled with extreme care. It may be rigid but it is still soft on the surface.
So what's wrong with Gatorboard? I thought it was a favorite since it doesn't warp.
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Mark, one more question. Why the Moab 300gsm double sided instead of the 290gsm single sided?
Not Mark, but have an answer anyway. 290gsm is only available in rolls. For those of us who use Entrada and don't have a printer that can use roll paper we use the double sided 300gsm cut sheets.
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Great post Mark. Can you provide a source for the PE foam liner sheets you use?
Thanks.
Paul
Uline (https://www.uline.com/BL_855/Uline-Foam-Rolls?keywords=Pe+Foam)
Uline is where I get it. I'm guessing folks overseas have similar suppliers as Uline. You do have to buy in 1 or 2 roll minimum (the rolls are over 1000 ft long, and pretty bulky), but PE foam has many other uses and is dirt cheap per linear foot. For example, I place it on top of the printed image as a super soft interleaving sheet when I decurl prints. Keeps surface perfectly free of fine abrasion/scuffing that matte prints seem to be very sensitive to. I also place it on my work table before laying down acrylic glazing to clean it. You can handle the acrylic with absolutely no worries about scratching. I will also use it as temporary interleaving for ink jet prints when rolling onto a tube for shipping (I roll print on outside of tube, then package the tube in a cardboard box designed just for the tube length and diameter. The recipient gets a print that is much easier to remove from the tube without potential damage compared to putting the print inside the tube.
Only cautionary tale I have for PE foam is I don't it use for long term storage in direct contact with paintings or furniture pieces which have natural resin varnishes like shellac. These varnishes can start to conform to the texture of the PE over time if temperature gets somewhat elevated and there is some pressure on the PE foam, but in the framing situation I described earlier for my personal fine art printmaking, the PE foam is behind the 2(or 4) ply matt board, thus between the Matt board back and the foam core. Never touches the front or back of the print.
cheers,
Mark
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Not Mark, but have an answer anyway. 290gsm is only available in rolls. For those of us who use Entrada and don't have a printer that can use roll paper we use the double sided 300gsm cut sheets.
Makes sense, but I use 24" rolls for most of my work.
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Mark, one more question. Why the Moab 300gsm double sided instead of the 290gsm single sided?
the 290 single sided version would work fine, but I prefer the 300gsm dual sided roll version for two reasons. First, I back print lot's of metadata including my personal stamps, camera data, gps data, date photographed and date printed, printer/ink/media info all on the verso. It's also where I sign in pencil (Moab Entrada coatings take #2 pencil beautifully). It becomes my personal time capsule. When folks clean or reframe in the future, none of the info will get lost. It will stay with the print as long as the print survives. The opacity of the dual sided 300gsm is so good, than none of this back printing "ghosts" through to the image on the front side.
Second, even the best printmakers ::) among us create some reject prints from time to time. I repurpose those reject prints for new proof prints using the unprinted verso. The coated back side is the perfect "proofing" paper since the coating is the same both sides 8) Thus, I actually find in the long run, the 300gsm dual sided is less expensive to stock in house than the 290gsm single sided Entrada.
cheers,
Mark
http://www.aardenburg-imaging.com
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As usual, Mark, an extremely helpful post. Thanks!
My question: what are the UV considerations for your approach? With Entrada Natural, do you consider it necessary to use glazing that includes UV protection or apply a spray that includes that protection?
Mark
There's a great deal of UV mythology out there in conservation framing land, IMHO. It may sound like heresy, but I don't even worry about UV blocking properties of the glazing nor do I believe thin top coatings on the print itself add any significant UV protection (although they may have other benefits). I base my opinion on some scientific facts.
1) All the UV blocking versus no UV blocking studies I have ever read return similar fading results. Full UV cut protection typically results in lower fade rates by 2-3x in the many studies which have been done, with some very sensitive colorants maybe benefitting by as much as 5x. However, my advice to print collectors is before you worry about potential 2-3x or even 5x fade reduction by buying expensive museum glass or the like, by an inexpensive lux meter or lux datalogger (Onset Computer Corporation makes a nice bluetooth lux and temperature datalogger for about $75) and use your light meter to take a cold hard look at your actual lighting and display conditions. A lot of UV attenuation is taking place on the walls, floors and ceilings of the room (latex paint contains an excellent UV absorber, wait for it, it's TiO2), and the remaining UV energy is always proportional to the visible light energy (Lux). So, unless you are allowing direct sunlight to strike the print, the 2-3x reduction factor probably isn't going to be realized over time. Second, because the UV component in the spectrum is always proportional in some linear way to the visible light energy coming from the same light source, tracking the visible light intensity also correlates very well with the fading danger posed to the print by the light source. Follow the light intensity! 100x higher light level will lead to roughly 100x faster fade rate! The typical room-to-room variation from lowest real world illumination levels for prints on display compared to highest illumination levels on display is almost always 10x to 100x and sometimes even greater than 1000x. This reality can be true even in just one room. Hence, if you had two identical prints located in the same room, one with UV blocking glazing and the other with regular glass, then merely by relocating the glass covered one to a less illuminated wall could easily get it to outlast the UV blocked version hanging in a higher illuminated area perhaps only a few feet away. Moral of the story: Pay attention to illumination levels on display. It's why Aardenburg posts its conservation display ratings as exposure values (Megalux hours) which are a product of both light intensity and time, rather than assuming an average "one-size-fits-all light level" for all prints on display in order to simplify (oversimplify) the print longevity ratings to "years on display". Such a single light level assumption leads to print longevity ratings that can be ludicrously far off from what the print collector will experience in real life. Light intensity, not UV content is the elephant in the room!!!
Lastly, museums usually kill the UV energy debate right at the light source. Modern high CRI LED lamps, for example, are pretty much UV-free. Cheaper to do that than to keep framing prints under expensive museum glass or OP3 plexiglass which can also impart unwanted color to the images on display.
Again, I know I'm going against the prevailing framing industry wisdom by saying this stuff, but if you sell or give your work to others where you have no control on how they display them, then this light level discussion is the important discussion to have with them. Don't shoot the messenger :)
kind regards,
Mark
http://www.aardenburg-imaging.com
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There's a great deal of UV mythology out there in conservation framing land, IMHO. It may sound like heresy, but I don't even worry about UV blocking properties of the glazing nor do I believe thin top coatings on the print itself add any significant UV protection (although they may have other benefits). I base my opinion on some scientific facts.
Another highly useful post, Mark. Thanks, again. No further questions right now.
Mark
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There's a great deal of UV mythology out there in conservation framing land, IMHO. It may sound like heresy, but I don't even worry about UV blocking properties of the glazing nor do I believe thin top coatings on the print itself add any significant UV protection (although they may have other benefits).
Mark
http://www.aardenburg-imaging.com
Agreed. There's also a lot of 'upselling' of UV block glazing, which is mostly completely unnecessary.
AR glass is very worthwhile, but AR UV block at 50% extra $ is a waste of $.
The framers and glass manufacturers would like you to believe otherwise, but AR glass cuts 75+% of the UV anyways, so it's really not worth paying much more for 90+% cut.
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now almost all of my work is on the Entrada Natural 300gsm.
cheers,
Mark
Thanks for sharing all your process, Mark. Good to know about the ability to contact-glaze Matte inkjet prints.
I discounted that from years back and RC Pigment & 'C-Prints', but it sounds like it's back on the table now.
From Ernst Dinkla's endlessly useful Spectrum-Viz, it looks like your Moab Entrada Natural 300gsm is the same as:
Epson Legacy Fibre Rag 314 and
Felix Schoeller True Rag Smooth Matt 305, and
Canson Rag Photographique 310
(Schoeller likely being the actual manufacturer of all these),
Other than the DS availability of MOAB, (not in rolls, which I use) they seem interchangeable, and the Epson is much better value right now with the rebate offer. Any thoughts, or am I missing something?
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From Ernst Dinkla's endlessly useful Spectrum-Viz, it looks like your Moab Entrada Natural 300gsm is the same as:
Epson Legacy Fibre Rag 314 and
Felix Schoeller True Rag Smooth Matt 305, and
Canson Rag Photographique 310
(Schoeller likely being the actual manufacturer of all these),
Other than the DS availability of MOAB, (not in rolls, which I use) they seem interchangeable, and the Epson is much better value right now with the rebate offer. Any thoughts, or am I missing something?
To my eyes, Moab Entrada Natural and Canson Rag Photographique are NOT at all alike. The Canson paper is whiter, due in part I'm sure to the "mineral content" that Canson adds to the paper. (I guess we are all still unsure if this is Titanium Dioxide or something else.) Also I don't think the coatings on these two papers are similar. With some inks (Piezography Pro in particular) I've discovered that the Moab coating produces extremely small "sparkle" which becomes visible when looking at the paper in certain angles of light. It's not unlike the sparkly dust you get from greeting cards these days. You can see it best when printing a flat field of darker ink. The Canson paper doesn't have any of this.
I can't speak to either the Epson or Felix Schoeller papers you mention....don't use them.
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I've done a lot of printing on Museo Portfolio Rag and it's in the same class of Moab Entrada and the others that have been mentioned. Similar spectral response as per Ernst's database.
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Reports of matte fine art papers/Entrada (pigment prints) contact glazed without sticking is reassuring and confirms my experience. I've framed epson hot press natural in contact with the glass with no known issues--new rules for new types of media I guess. For my market I need to avoid dry mounting the print, also want to eliminate spacers. For larger jobs all that is very time consuming.
In a similar thread on this forum someone reported framing Ilford pearl pigment prints in contact with glass with no issues experienced (so far). I'm wondering if anyone has any experience framing Epson Legacy Baryta (or similar quality baryta paper printed with pigmented inks) in direct contact with glazing?
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I’ve framed Platine , a semi gloss which is 100% cotton, sandwiched behind plexi for a two month show (I never use heavy glass ) and then left them in my studio that way for a year and a half and they look perfect, with not even any buckling of any kind. These are in the 20x30 and 30x40 range.
I mentioned before that I’ve had Canson Rag Photo matte prints framed this way ( with various inks) for about 12 years in daily daylight and they still look great. But in all cases these prints were sprayed with Premiere Art uv spray.
The Museo Portfolio Rag is a beautiful paper with a very sharp looking coating, sharper than any matte paper I’ve used ( Canson is second ).The Piezography K7 prints I did on it 10 years ago were less reddish warm on it than other natural papers and were just right for that job of Henry Burtons Photography of the first photographs from inside the King Tutt tomb.
However anything with large areas of pure black I could never do on this paper because it just didn’t handle dense black ink well on any of my printers. I was carefully linearizing with Studio Print at that time and large areas of black got mottled. Other people abandoned this paper for that reason observing that issue when making profiles. I also found Portfolio Rag was a very durable paper and didn’t flake when handled like Entrada or Hah Photorag can. I don’t know if they still coat it the same these days.
I kind of miss that paper. I want to go back and play with it more.
John
Reports of matte fine art papers/Entrada (pigment prints) contact glazed without sticking is reassuring and confirms my experience. I've framed epson hot press natural in contact with the glass with no known issues--new rules for new types of media I guess. For my market I need to avoid dry mounting the print, also want to eliminate spacers. For larger jobs all that is very time consuming.
In a similar thread on this forum someone reported framing Ilford pearl pigment prints in contact with glass with no issues experienced (so far). I'm wondering if anyone has any experience framing Epson Legacy Baryta (or similar quality baryta paper printed with pigmented inks) in direct contact with glazing?
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Thanks for sharing all your process, Mark. Good to know about the ability to contact-glaze Matte inkjet prints.
I discounted that from years back and RC Pigment & 'C-Prints', but it sounds like it's back on the table now.
From Ernst Dinkla's endlessly useful Spectrum-Viz, it looks like your Moab Entrada Natural 300gsm is the same as:
Epson Legacy Fibre Rag 314 and
Felix Schoeller True Rag Smooth Matt 305, and
Canson Rag Photographique 310
(Schoeller likely being the actual manufacturer of all these),
Other than the DS availability of MOAB, (not in rolls, which I use) they seem interchangeable, and the Epson is much better value right now with the rebate offer. Any thoughts, or am I missing something?
The Moab has a different spectral plot, see left side, could be TiO2 but I think UV absorption should be more to the left.
Canson <> Felix Schoeller cooperate, at least for the coatings. Epson I do not know but it would not surprise me if they get the paper + coating from FS.
Met vriendelijke groet, Ernst
http://www.pigment-print.com/spectralplots/spectrumviz_1.htm
March 2017 update, 750+ inkjet media white spectral plots