Xerox Phaser 6110 :  foo2zjs - foo2hp - foo2xqx - foo2lava - foo2qpdl - foo2oak
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Colour quality problems with Phaser 6110
Posted by: domf ()
Date: May 17, 2007 04:29PM

Hi,

i've bought a Phaser 6110 and planned to have it connected to my Ubuntu box allowing my wife to print to it from her Intel MacPro & my daughter from her XP machine.

Following the install on Ubuntu using the supplied driver the quality of print was extremely poor so I tried changing to foo2zjz. Though this gave more options the quality did not change.

The printer is now connected by USB to my wife's Mac and the print quality is fine. I've added the printer to my Ubuntu Cups using the foo2zjs driver and get the following:

1) If I print a page from Ubuntu which is mixed colour/black with the printer set to monochrome in the Ubuntu CUPS then all is well.

2) If I then change the printer to colour in CUPS and reprint the same page the black text is extremely poorly defined and blurry. However other colour text on the same page (e.g. blue) is much sharper (though I'm not 100% sure its as sharp as it should be!)

3) Printing a similar page from the mac is no problem in either monochrome or colour.

4) Printing from an X11 app on the Mac also results in the blurred text syndrome!


Any suggestions on how to troubleshoot this greatly appreciated!



Dom

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Re: Colour quality problems with Phaser 6110
Posted by: rickrich ()
Date: May 17, 2007 04:33PM

From Changelog:
2007-05-16      Rick Richardson <rick.richardson@comcast.net>
        * foo2qpdl-wrapper: fix it again.  NOTE: use only gs 7.07 OR gs 8.54+
        to print color!!!!  Ubuntu has a problem with gs 8.15!!!

2007-05-15      Rick Richardson <rick.richardson@comcast.net>
        * foo2qpdl-wrapper: Fix gamma for black text (black-text.ps).
            For Samsung CLP-300/600, CLX-3160, Xerox Phaser 6110/6115MFP.

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Re: Colour quality problems with Phaser 6110
Posted by: domf ()
Date: May 18, 2007 06:48AM

I'm now running GS 8.54 and the latest driver (as of an hour ago) and there is a significant improvement - thankyou!


However the text is still far from sharp. Are there any other things I can try or is this the best available for this printer at the moment?

I have some time available to help troubleshoot this if that helps?


Dom

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Re: Colour quality problems with Phaser 6110
Posted by: rickrich ()
Date: May 18, 2007 08:46AM

Best available.

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Re: Colour quality problems with Phaser 6110
Posted by: rickrich ()
Date: June 01, 2007 01:30PM

From Changelog:
2007-06-01      Rick Richardson <rick.richardson@comcast.net>
        * foo2qpdl: Change ICM from -z0 to -C10 -Gsamclp300-0.icm
        * getweb: Add 300, 600, 3160, 6110 to get profiles from the web.

            $ make
            $ ./getweb 300      # or 3160, 6110
            # make install cups

            Delete Samsung CLP-300/600, CLX-3160, Xerox Phaser 6110/6115MFP
            and recreate them again.

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Re: Colour quality problems with Phaser 6110
Posted by: fnevgeny ()
Date: January 21, 2008 07:35PM

Hi,

I bought Xerox Phaser 6110 and had the same problem like Dom's - the colors were very dark and the general quality of the color output was very low. Turned out the culprit was ... foo2zjs-icc2ps, which segfaulted inside the foo2qpdl-wrapper script (funnily, it worked fine when run manually at the shell prompt). Here is the patch - viva valgrind:
--- icc2ps/cmsio1.c.orig        2006-05-23 17:34:45.000000000 +0300
+++ icc2ps/cmsio1.c     2008-01-22 01:44:02.000000000 +0200
@@ -1446,7 +1446,7 @@
                     Icc ->Read(&Discard, 1, 1, Icc);
             }
 
-            wchar = (wchar_t*) malloc(Len+2);
+            wchar = (wchar_t*) calloc(Len+2,sizeof(wchar_t));
             if (!wchar) return -1;
             
             Icc ->Read(wchar, 1, Len, Icc);
(NB: my box is 64bits). After the fix, everything is fine - thanks for the driver!

Regards,

Evgeny

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Re: Colour quality problems with Phaser 6110
Posted by: rickrich ()
Date: January 22, 2008 12:13PM

2008-01-22      Rick Richardson <rick.richardson@comcast.net>
        * Modify: icc2ps/cmsio1.c to malloc space for wchar_t right.
Committed.

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