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Author Topic: Dirty trailing edge of print ???  (Read 825 times)
David_G
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« on: April 18, 2013, 05:31:06 AM »
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This is really got me stumped ....

EPSON 4900

I have a b&w image. When I print it the trailing edge gets a cyan/magenta dirty mark right across it.

I have rotated the print and the same happens - so that means its not the image.

I have changed stocks and it still happens.

I have printed other images in colour on the same stock without issue.

I am printing with 15mm (3/5in) of the edge though the printer meant to be able to do borderless.

If I reduce the print size considerably (print stops 50mm from edge/2inches) it disappears.

I have been using the Epson Fine Art Velvet their Cold & Hot Cold Press papers.

Any ideas appreciated Wink

Thanks,

David
« Last Edit: April 18, 2013, 05:37:00 AM by David_G » Logged
Ernst Dinkla
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« Reply #1 on: April 18, 2013, 05:38:02 AM »
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Does not look like heads touching the paper surface so most likely not an HP or Canon printer but it could help if you add the printer brand and model to your message.


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Met vriendelijke groet, Ernst

http://www.pigment-print.com/spectralplots/spectrumviz_1.htm
December 2012, 500+ inkjet media white spectral plots.
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David_G
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« Reply #2 on: April 18, 2013, 05:46:16 AM »
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Does not look like heads touching the paper surface so most likely not an HP or Canon printer but it could help if you add the printer brand and model to your message.

Yes ... I did edit that in ... it is an Epson 4900 ... you were too quick Wink

I have also tried raising the platen but to no effect Sad
« Last Edit: April 18, 2013, 05:48:06 AM by David_G » Logged
ChuckT
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« Reply #3 on: April 18, 2013, 07:03:05 AM »
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Sounds like the paper trailing edge is wiping excess ink off some part of the printer.

Could on of the wipers come adrift?

cvt
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Ernst Dinkla
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« Reply #4 on: April 18, 2013, 07:33:16 AM »
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Looks more like some yellow etc print data does not come through at the end and you printing a B&W in Color mode instead of ABW mode as I would expect the last to do more Black+Grey substitution on that greyscale image. On an HP or Canon the substitution with B+G would be even higher so I figured it had to be an Epson. More a kind of weaving not finished at the end because the printer thinks there is not enough paper left. Either actual sizes and set sizes are mixed up or the media sensor sees the trailing edge too early. If I can trust my eyes with that scan.

Edit: I was only looking at the edge of the image, the brown-magenta in the middle is part of the problem I guess. Heads that touch media do not make such soft changes in my opinion, have no clue on that.

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Met vriendelijke groet, Ernst

http://www.pigment-print.com/spectralplots/spectrumviz_1.htm
December 2012, 500+ inkjet media white spectral plots.
« Last Edit: April 18, 2013, 07:59:05 AM by Ernst Dinkla » Logged
David_G
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« Reply #5 on: April 19, 2013, 12:01:09 AM »
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According to the Epson tech, printing too close to the edge on a cut sheet in fine art stocks will do this.
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Ernst Dinkla
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« Reply #6 on: April 21, 2013, 05:01:13 AM »
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Did you ask then why they did not widen the trailing edge print margin for art papers accordingly so this flaw would not show?

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Met vriendelijke groet, Ernst

http://www.pigment-print.com/spectralplots/spectrumviz_1.htm
December 2012, 500+ inkjet media white spectral plots.
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