Re: Gimp-Print Output Problem
Re: Gimp-Print Output Problem
- Subject: Re: Gimp-Print Output Problem
- From: Rick Gordon <email@hidden>
- Date: Sun, 3 Aug 2003 23:58:49 -0700
>
Are you seeing one working better than the other?
Both the CMYK and RGB targets show numerous paper-white patches where color should appear.
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I'd like to see the target (is it something you can email me as a TIFF
>
file -- I don't have either Photoshop or Quark, and right now I don't
>
have a Mac either). I have an 870, and its driver should be
>
well-tuned. Perhaps there is something we don't have quite right that
>
I can tune, or I may have some other suggestions.
>
>
I'm somewhat surprised that you're seeing light patches with no
>
visible color; highlights are generally an area where Gimp-Print does
>
well.
I'll send you the target charts zipped in a separate email along with pertinent PPDs. But the chart image files are untagged, and both come form the charts distributed with Gretag ProfileMaker 4.1.x. I redistributed the number of rows per page of the CMYK target charts to print onto three letter-sized pages.
To be precise, my printer is an 875DC, whose engine is identical to an 870; it differs by having a media card slot built in (which I've never used). The driver associated with the installation is "EPSON Stylus Photo 875 - CUPS+Gimp-Print v4.2.6-pre1" and the PPD associated with it in Quark is "escp2-875.ppd.gz" which I installed into /Library/Printers/PPDs/Contents/Resources/en.lproj/ . I see two PPDs in /etc/cups/ppd/ . They are "Stylus_Photo_875DC_hGimp_Printi.ppd" and "SP_875DChUSBi.ppd".
My hope would be to be able to profile my printer for raw CMYK data output from Quark, so that I can generate a profile optimized for that workflow.
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On 8/2/03 at 10:29 PM -0400, Robert L Krawitz wrote in a message entitled
"Re: Gimp-Print Output Problem":
>
Date: Sat, 2 Aug 2003 17:28:50 -0700
>
From: Rick Gordon <email@hidden>
>
>
Using Gimp-Print 4.26. and OS 10.2.6, I printed ECI2000 and TC 9.18
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targets on an Epson 870. The pages were output out of QuarkXPress 6
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with color management disabled (turned off in preferences).
>
>
The settings were:
>
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Photo Paper
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1440 x 720 (highest quality)
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Photograph
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Eventone Dither Algorithm
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Six Color Photo
>
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Raw CMYK for the ECI2000 and Color for the TC 9.18. Output was
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seasoned for several days.
>
>
Are you seeing one working better than the other?
>
>
I'm concerned because the target printouts are obviously skewed,
>
and I can generate excellent profiles using the Epson driver. There
>
are numerous light patches where there is no visible color. Target
>
charts printed from the Epson driver (with no color management) are
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considerably darker.
>
>
I'd like to see the target (is it something you can email me as a TIFF
>
file -- I don't have either Photoshop or Quark, and right now I don't
>
have a Mac either). I have an 870, and its driver should be
>
well-tuned. Perhaps there is something we don't have quite right that
>
I can tune, or I may have some other suggestions.
>
>
I'm somewhat surprised that you're seeing light patches with no
>
visible color; highlights are generally an area where Gimp-Print does
>
well.
>
>
I haven't yet reprinted the targets out of Photoshop (which I trust
>
-- I'm still experimenting with Quark 6' s output), but my
>
intention is to optimize them for use (particularly the CMYK) when
>
printing from Quark.
>
>
Any clues before going off into a paper-wasting episode? Assuming
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that I can get a usable printout, what is the preferred dither
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algorithm -- adaptive hybrid, Eventone, or ???
>
>
If you're printing photographs, EvenTone is probably the best choice.
>
For graphics, Adaptive Hybrid may work better. It has fewer
>
artifacts, but it's a bit grainier than EvenTone.
>
>
--
>
Robert Krawitz <email@hidden>
--
___________________________________________________
RICK GORDON
EMERALD VALLEY GRAPHICS AND CONSULTING
___________________________________________________
WWW:
http://www.shelterpub.com
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