Cannot print text file starting with two capital leters MM.

[michaelrsweet]

Version: 1.2-current
CUPS.org User: wolfhard_reimer

Operating system: Linux Ubuntu 6.06.1 LTS for amd64
Printer: Canon BJC-6100 on USB2 port
Printer driver: TurboPrint 1.95-2 (http://www.turboprint.de/)
First, I am German, therefore excuse my bad English.
Second, I am a newbie to Linux, therefore excuse my lack of knowledge
about the system.
Situation: I was not happy with the print output from various
applications. The colours are always too light. So, I decided to
install the TurboPrint driver mentioned on a Canon download side
(http://support.canon.de/produkte/drucker/bjc6100/bjc6100_sw.htm).
After some trials and errors, I completed the installation and the
print output is similar to the one I have achieved under my old
WIN 98 system.
Error description:
I use the lp command at the command prompt to print a text file,
e.g. "lp file". I am able to print any text file with the exception
of text files, which start with two capital letters MM. In this case,
I receive in the CUP web interface the following message for the
printer:
tp0 (Standarddrucker) "/usr/lib/cups/filter/imagetops failed"
The CUPS error log shows (example):
PID 13377 (/usr/lib/cups/filter/imagetops) stopped with status 1!
[Job 83] Unable to open image file for printing!
In addition to this problem, I am not able to administer the printer
queue via the CUP web interface. I do not know, which user and password
I have to specify. Therefore, I am currently using "sudo cancel -a"
in a terminal to clear the printer queue.
Please investigate the described problem!
Sincerely, Wolfhard Reimer

[michaelrsweet]

CUPS.org User: mike

Not sure when this will be "fixed". Basically, your text file is being mis-identified as a TIFF image. To work around the issue, add the following option to your print command:

-o document-format=text/plain

[michaelrsweet]

CUPS.org User: wolfhard_reimer

Hello Mike, thanks for the quick response!
I have looked for documentation of a parameter, which allows to define
the document format, but I was not successfull. Therefore, many
thanks for the work around, which is pretty good enough for me. But
where can I found the full documentation ?
Nevertheless, I have an additional question:
I received an eMail from cups-bugs-bounces@easysw.com regarding that
the bug report has been posted by a non-member to a members-only list.
I thought that my registration (user wolfhard_reimer), which allowed me
to report the bug, is sufficient. Please explain.
Sincerely Wolfhard

[michaelrsweet]

CUPS.org User: h.blischke

The issue could be solved by modifying the mime.types rule for identifyint TIFF files as follows:

image/tiff tiff tif string(0,MM<002A>) string(0,II<2A00>)

which would exclude text files starting with "MM" or "II" from being identified as TIFF images.

[michaelrsweet]

CUPS.org User: wolfhard_reimer

Hello Mr. Blaschke,
Thanks for a second method to circumvent my problem.
Is it correct that I have then to modify the image/tiff directive in
/etc/cups/mime.types ?
Is this the final solution or another workaround ?
In the first case, you may close the bug record.
Sincerely, Wolfhard Reimer

[michaelrsweet]

CUPS.org User: mike

Thanks, I've committed the change to the image/tiff MIME type definition as you've suggested...