[Foo2zjs-maintainer] Bug#580690: Bug#580690: Bug#580690: foo2zjs: Moire on Samsung CLX-3175 with foo2qpdl

[Luca Capello]

Hi Alexey!

On Sun, 17 Oct 2010 17:40:14 +0200, Alexey Feldgendler wrote:
> On Thu, 14 Oct 2010 11:13:38 +0200, Luca Capello <luca at pca.it> wrote:
>
>> Have you tried with the ICM files upstream provides?  You should
>> download them with the 'getweb' script:
>>
>>   # getweb 3175
>
> Thanks! Never knew about this possiblity. I'll try the things you
> suggest as soon as I find a little time for this.

Thank you.

>>> I know this bug report probably doesn't help much. I can help you
>>> debug this by producing e.g. test QPDL files, if you tell me how.
>
>> I have never used such files (I own only an HP Color LaserJet 1500L, now
>> broken), but you should simply copy the upstream QPDL files from
>> foo2zjs/crd/qpdl/* into /usr/share/foo2qpdl/crd/.
>>
>> NB, these files were removed from the Debian package because their
>>     license is unclear, thus we can not distribute them.
>>
>> Obviously, you can also try to use the QPDL files from Samsung's
>> proprietary Linux driver.
>
> What are these files?

From <http://foo2qpdl.rkkda.com/>:

  In fact, QPDL printers are raster printers which happen to use a very
  efficient wire protocol. QPDL is just one of many wire protocols that
  are in use today, such as Postscript, PCL, Epson, ZjStream, etc.

This means that feeding the printer with a QPDL file can effectively
"configure" the printer.

OTOH, the CRD files are "Color Rendering Dictionaries", i.e. a color
profile for PostScript files.

> Why do they need to be in the distribution, and what happens if they
> aren't present?

Basically, the major drawback should be a color problem, as you can see
From the image attached in the corresponding LaunchPad bug:

  https://bugs.launchpad.net/ubuntu/+source/foo2zjs/+bug/424546

Given that we (Debian foo2zjs maintainers) do not know where these files
come from and especially their license, it is impossible for Debian to
include them, even in the source package.

Actually, at least upstream foo2zjs/crd/qpdl/CLP-300cms contains a clear
evidence that this file should derive directly from Samsung (probably an
older version of their Unified Linux Driver):

--8<---------------cut here---------------start------------->8---
   131  <</UseCIEColor true>>setpagedevice
   132  %%!PS-Adobe-3.0
   133  %
   134  % Color Rendering Dictionary (CRD)
   135  % Source:  - Samsung
   136  % Description: Gogh17.0M_Per2_G135_KStart62_CMYK_L5Down
   137  % Created: Fri Jun 30 20:13:57 2006
   138  %
   139  %%BeginResource
   140  <<
--8<---------------cut here---------------end--------------->8---

Until Samsung releases its driver (or at least these files/color
profiles) under a F/LOSS license, Debian can/will not include them,
sorry.

Unfortunately, if the your problem is caused by these missing QPDL
files, then the only solution would be to add a note in the
README.Debian about how to get them.  However, if the problem is the
misplaced files that 'getweb' downloads, then the fix is on the way.

Thx, bye,
Gismo / Luca
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 835 bytes
Desc: not available
URL: <http://lists.alioth.debian.org/pipermail/foo2zjs-maintainer/attachments/20101020/49924011/attachment.pgp>