HP Color LaserJet 2600n :  foo2zjs - foo2hp - foo2xqx - foo2lava - foo2qpdl - foo2oak
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2600n Black crosshatching in color prints
Posted by: KennV ()
Date: December 29, 2006 02:02AM

Good Day,

I've been playing with this issue for a while now and I believe I have tried all the solutions offered within the new and old forums and still have not been able to make a decent color print.

The colors do look good but there is also a crosshatch in black within the colored prints.

Some specs to help diagnose:

OpenSUSE 10.1

foo2zjs released 2006-12-23

$ uname -a
Linux blackangus 2.6.13-15.12-default #1 Thu Aug 24 11:23:58 UTC 2006 i686 athlon i386 GNU/Linux

$ gs -v
GPL Ghostscript 8.54 (2006-05-17)

I've tried using the default .icm, hpclj2600-0.icm and km2430_2.icm and while they all output varied color results the crosshatch is constant.

If anyone has any other suggestions that I may have missed please let me know.

If any other relevant information is required I will happily supply it.

Much appreciated,

Kenn

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Re: 2600n Black crosshatching in color prints
Posted by: rickrich ()
Date: December 29, 2006 07:46AM

Don't see this.

$ foo2hp2600-wrapper -c pic.ps >pic-gs854-Qwts.zc
$ nc 192.168.1.12 9100 < pic-gs854-Qwts.zc

Prints fine.

File: pic-gs854-Qwts.zc

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Re: 2600n Black crosshatching in color prints
Posted by: KennV ()
Date: December 29, 2006 11:32AM

Your correct, it does print fine from a postscript file using foo2hp2600-wrapper and nc. Strange. Something must be happening within KDE or cups.

Thanks for the help.

Back to troubleshooting for me...

Kenn

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Re: 2600n Black crosshatching in color prints
Posted by: KennV ()
Date: February 28, 2007 02:04AM

Update

Having a chance to finally play some more, I've found part of my problem.

To make cups use the newly installed GS 8.54 I had to edit:

# vi /etc/foomatic/filter.conf

and add/change the following two lines:
gspath: /usr/local/bin/gs

execpath: /usr/local/bin:/usr/bin:/bin

Then restart cups:
# rccups restart
or
# /etc/init.d/cups restart


Color images are vastly improved with the newer version of ghostscript, however they are still not as good as the reference provided by Rick.

I will update again when/if I find another improvement.

Kenn

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Re: 2600n Black crosshatching in color prints
Posted by: KennV ()
Date: March 04, 2007 12:35PM

Update

I've managed to match the printing quality of Rick's reference photo when printing through KDE/Cups.

As a reference for when I need to make this work on another computer and possibly to help anyone else who has the same issues as I did I will outline the steps here.

Download and unpack GPL Ghostscript-8.54 somewhere handy.
Then install it:
$ ./configure --enable-compile-inits --with-x
$ make
# make install
$ make so
# make soinstall
Then download and copy the Ghostscript fonts to the appropriate directory.


I also created a symbolic link from /usr/local/bin/gs to /usr/local/bin/gs8, although I'm not sure this is necessary. (I noticed foo2hp2600-wrapper looked for gs8 so I put it there).
# ln -s /usr/local/bin/gs /usr/local/bin/gs8


Make cups use the newly installed Ghostscript.
# vi /etc/foomatic/filter.conf

Add/Change the following lines:
gspath: /usr/local/bin/gs

execpath: /usr/local/bin:/usr/bin:/bin

Restart cups:
# rccups restart
or
# /etc/init.d/cups restart


Install foo2zjs following the excellent documentation provided.


Use Yast to install the printer.


I am now able to make fairly good color prints through KDE/Cups. I don't think they are as good as what I can print out of Windows but they are good enough for my purposes and match Rick's reference quality.

KennV



Edited 1 time(s). Last edit at 03/04/2007 01:27PM by KennV.

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Re: 2600n Black crosshatching in color prints
Posted by: apfitch ()
Date: March 15, 2007 07:35PM

Hi Kenny,
I tried your technique and it works! Printing from Gimp now looks good, though
I found the default print setup on gimp (-oraw) needed to be removed.

However printing from Firefox is still aliased :-(

Thanks for the tips,
Alan

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