Re: Re: Reverse-engineering CD printing on the Epson R300

   From: "Kenneth P. Esler Jr." <esler@xxxxxxxx>
   Date: Sat, 24 Jul 2004 21:33:00 -0500

   By editting the remote mode commands for the CD media source, in
   the variable cd_cutter_roll_feed_input_slots[] in file
   print-escp2-data.c, I was able to get the CD tray to feed and print
   within the gimp plugin, although alignment with the CD is terribly
   off.  However, when printing postscript with cups, I always get the
   following error in my log file when trying to print to the CD, and
   nothing happens:

   W [24/Jul/2004:20:46:44 -0500] [Job 137] Media tray empty!
   E [24/Jul/2004:20:46:48 -0500] [Job 137] Gimp-Print: options failed to
   verify.
   E [24/Jul/2004:20:46:48 -0500] [Job 137] Gimp-Print: Make sure that you
   are using ESP Ghostscript rather
   E [24/Jul/2004:20:46:48 -0500] [Job 137] Gimp-Print: than GNU or AFPL
   Ghostscript with CUPS.
   E [24/Jul/2004:20:46:48 -0500] [Job 137] Gimp-Print: If this is not the
   cause, set LogLevel to debug2 to identify the problem.
   E [24/Jul/2004:20:46:48 -0500] [Job 137] Gimp-Print Invalid printer
   settings!
   E [24/Jul/2004:20:46:48 -0500] [Job 137] Gimp-Print No pages found!
   E [24/Jul/2004:20:46:48 -0500] PID 11022 stopped with status 1!

   On turning on debug, I find I get the error:

   D [24/Jul/2004:21:30:33 -0500] [Job 145] Gimp-Print internal: `A4' is
   not a valid PageSize

   Any suggestions as to how to resolve this conflict?

   BTW, the remote mode command string that seemed to work was
   {26,
   
"PM\002\000\000\000IR\002\000\000\003FP\003\000\000\000\000PP\003\000\000\002\001"}

This is good to know.  This is next on my queue (I have some other
non-Gimp-Print stuff I have to work on first).  Then maybe I'll
finally get a crack at the R800, which has finally arrived.

You need to set one of the two special CD page sizes in order to print
to a CD.  The driver itself should take care of telling the printer to
print A4 size.  The GIMP plugin doesn't allow you to choose an invalid
page size, but CUPS doesn't forbid it (the PPD files don't have all
the different constraints actually coded -- it would be prohibitive).

I really do want to get direct to CD printing working.  This feature
is in heavy demand.  Thanks for doing the legwork.
-- 
Robert Krawitz                                     <rlk@xxxxxxxxxxxx>

Tall Clubs International  --  http://www.tall.org/ or 1-888-IM-TALL-2
Member of the League for Programming Freedom -- mail lpf@xxxxxxxxxxxx
Project lead for Gimp Print   --    http://gimp-print.sourceforge.net

"Linux doesn't dictate how I work, I dictate how Linux works."
--Eric Crampton


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