Luminous Landscape Forum

Raw & Post Processing, Printing => Printing: Printers, Papers and Inks => Topic started by: neile on April 05, 2009, 08:49:37 pm

Title: Shiny mark from Epson 3800 on Ilford GFS?
Post by: neile on April 05, 2009, 08:49:37 pm

Today I ran a number of 8.5x11" prints on Ilford Gold Fibre Silk on an Epson 3800 printer. every print has a shiny 1/2" mark in the exact same spot on every print. It's right about where the rule of thirds would say to put it for a perfect composition placement

Has anyone seen this before? Anyone have any ideas how to prevent it from happening?

Neil

Title: Shiny mark from Epson 3800 on Ilford GFS?
Post by: howardm on April 06, 2009, 08:30:38 am

pizza wheel marks?
http://people.csail.mit.edu/ericchan/dp/Ep...eels_workaround (http://people.csail.mit.edu/ericchan/dp/Epson3800/faq.html#pizza_wheels_workaround)

possibly gunk on the rollers that is essentially scratching the surface?

Title: Shiny mark from Epson 3800 on Ilford GFS?
Post by: neile on April 06, 2009, 11:06:44 am

No, this is different. The mark (there is just one) is perpendicular to the feed path of the printer, not parallel. It's almost like a scuff mark about 1/3 of the way up the page.

Neil

Title: Shiny mark from Epson 3800 on Ilford GFS?
Post by: NikoJorj on April 06, 2009, 11:57:13 am

Quote from: neile

The mark (there is just one) is perpendicular to the feed path of the printer, not parallel. It's almost like a scuff mark about 1/3 of the way up the page.

Head strike maybe?
I have them rather at the end of the sheet with my R1800 and IGFS.
Raising the head ("thick paper" adjustment) does cure most (if not any) of it.

IGFS has a strong tendancy to curl under ink, water or other coatings...

Title: Shiny mark from Epson 3800 on Ilford GFS?
Post by: neile on April 06, 2009, 12:35:14 pm

Quote from: NikoJorj

Head strike maybe?
I have them rather at the end of the sheet with my R1800 and IGFS.
Raising the head ("thick paper" adjustment) does cure most (if not any) of it.

IGFS has a strong tendancy to curl under ink, water or other coatings...

I don't think it's a head strike as there is no smearing of the ink and no ink marks.

Neil

Title: Shiny mark from Epson 3800 on Ilford GFS?
Post by: Wayne Fox on April 06, 2009, 09:13:43 pm

Quote from: neile

I don't think it's a head strike as there is no smearing of the ink and no ink marks.

Neil

May not be a head strike per say ... what is probably happening is some part of the head mechanism itself is slightly rubbing the surface of the print for 2or 3 passes.  You should be able to watch the paper feeding, knowing from a previous print where the rubbing will occur and watch the ends of the paper at that point ... are they releasing from a guide?  Perhaps the leading edge sticks on a guide briefly and bows the paper briefly.

Title: Shiny mark from Epson 3800 on Ilford GFS?
Post by: neile on April 06, 2009, 09:42:40 pm

Quote from: Wayne Fox

May not be a head strike per say ... what is probably happening is some part of the head mechanism itself is slightly rubbing the surface of the print for 2or 3 passes.  You should be able to watch the paper feeding, knowing from a previous print where the rubbing will occur and watch the ends of the paper at that point ... are they releasing from a guide?  Perhaps the leading edge sticks on a guide briefly and bows the paper briefly.

Thanks Wayne, I'll take a look at that next time I'm printing.

Neil