[cups] Brother BIG inkjet, can't make it use near enough ink

Gene Heskett gheskett at shentel.net
Fri Dec 21 12:22:39 PST 2018


On Friday 21 December 2018 13:20:38 Helge Blischke wrote:

> > grep 1006 seems to be the last job before I turned the debugging
> > off.
> >
> > Thats a bit smaller, little over 60k total. But with debugging on, I
> > thought maybe the cups restart might contain something interesting.
> > It doesn't find everything its looking for.
> >
> > Thanks a bunch for looking at this Helge.
> >
> > --
> > Cheers, Gene Heskett
> > —
>
> Thanks for the two files; I got the information I was looking for.
>
> From my experience, the only reliable method to improve the color
> printout is performing a real calibration by a service company (except
> your are going to buy the calibration equipment by yourself).
> That usually means to print a standardized color template sheet,
> sending it by analog mail to the service company and getting back an
> ICC color profile.
>
> The pity in your case is one of the filters involved: the
> pdftops
> filter (part of the cups-filters package from openprinting.org).
> According to your log file, this filter uses Ghostscript to convert
> the PDF into PostScript, but the command line options for Ghostscript
> are hard coded into the program; there is no chance to modify the list
> of options.
>
> If you really are willing to go this route, I could gibe you a
> replacement script for the pdftops filter (which will have the same
> name) which honors the *cupsICCProfile
> keywords as described in the cups PPD extensions.
>
> This filter is implemented as a Perl script, so there is no
> compilation necessary.
>
> In addition, I’d recommend to get a more recent Ghostscript release,
> as the release 9.05 you are using still has a couple of quirks
> regarding color processing (as Ghostscript only from release 9.00 on
> woks with ICC profiles); the latest release is 9.26  (but any release
> not less than 9.10 should be OK with respect to color handling).
>
> Helge
>
Send away please, and I'll see what hacking up an ICC profile might 
amount to. And yes, 2 decades back I regularly built gs on a full blown 
amaga-2000-40-64megs of ram, so I ought to be able to hack something up.

URL for gs source these days?
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Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>


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