What happens if you coat gloss canvas with matte coating/laminate/varnish?

[darlingm]

I've used a ton of matte canvas, but never luster/semi-gloss/gloss.

What happens if you use a luster/semi-gloss/gloss canvas, and put a matte coat/laminate/varnish on top?

Does it stay the same gloss?  Does it go solid matte?  Does it turn into a semi-gloss, like if you pre-mixed the liquid varnishes 50/50%?

Do you keep the expanded color gamut that a luster/semi-gloss/gloss canvas has over a matte canvas, or does it shrink?



... My thought process leads me to believe you'd keep a gloss finish, perhaps turning it into a semi-gloss, and that you'd lose the addition to the color gamut if you were able to remove some of the sheen... I could be totally off, but I'm thinking we gain color gamut with a glossier finish due to higher light reflection and therefore a brighter whitepoint, and that *even if* you could kill that glossier finish, you'd kill the higher light reflection and just turn it into a regular matte canvas.

Basically, I have a customer who wants a larger color gamut than Breathing Color Lyve w/ Breathing Color Timeless Matte gives, while retaining a pure matte finish.  Before saying it's not possible, trying to think outside the box a bit.  I know there could be a matte canvas out there that has a higher gamut than Lyve, but it wouldn't be significantly higher.  I'm trying to hit something closer to photo paper gamut, which I'm thinking is impossible while retaining a matte finish.

[louoates]

 I always use 2 coats, minimum, of matte coating on either matte or satin canvas and end up with about the same matte finish look, which I prefer.

[darlingm]

Well, I made three test prints the other day on Breathing Color Lyve.  Coated one with Breathing Color Timeless Matte, one with Timeless Satin, and the last with Timeless Gloss.  Just took the one originally coated with Timeless Gloss, and put a coat on top of Timeless Matte.  Along with what louoates said, and against my original guess, after drying, it's pure matte - no hint of gloss.  Now in this situation, the matte and gloss-->matte print look identical.  Only question is whether covering up gloss canvas with matte coating kills the expanded color gamut as much as covering up glass coating with matte coating...

I always use 2 coats, minimum, of matte coating on either matte or satin canvas and end up with about the same matte finish look, which I prefer.

If you make the same print on each canvas, put 2 coats of matte coating on them, do they wind up looking the same -- or does satin still look better?

BTW, are you using Breathing Color Timeless, or a different coating?

[louoates]

The coating I've settled on after testing every other sealer that most folks use is Clear Shield Type C for canvas. It is the only sealer I've found that doesn't clump up in the can when not in use for awhile. Requires minimum stirring only and rolls on like a charm. Often one coat is enough with re-coating after 15-30  minutes all that I have ever needed. I make doubly sure the ink is dry before sealing. For me that's 24 hours minimum after printing (in low-humidity Arizona). I use only matte now but I've also used their gloss and satin with same results. They used to send out a minimal cost sample from the factory, then prefer you buy from one of their several distributors in the U.S.

http://www.magicinkjet.com/uploadedfiles/CLEARCOATINGMANUAL2002.pdf

[Ernst Dinkla]

Only question is whether covering up gloss canvas with matte coating kills the expanded color gamut as much as covering up glass coating with matte coating...

If you make the same print on each canvas, put 2 coats of matte coating on them, do they wind up looking the same -- or does satin still look better?

Any thicker layer of matte coating will reduce Dmax, dynamic range, gamut. I start from matte canvas, apply 2 gloss coats to build up a protective layer and then a very thin satin coat to take away the scatter of the gloss canvas. The custom ICC profile is made of a coated canvas target.

--
Met vriendelijke groet, Ernst

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