[OS X TeX] printer mistakes black for white
bvoisin at mac.com
Tue Dec 19 08:05:17 EST 2006
Le 16 déc. 06 à 20:29, Friedrich Vosberg a écrit :
> I've scanned some sheets and saved it as PDF files. When I print
> these files, all sheets that only contain black and white are
> inverted. Sheets that contain colours are printed all right.
> I use an MBP C2D MacOS X 10.4.8 and a Xerox Phaser 3500. The result
> is indepent from which application I start the print job. In all
> cases the preview of the print document is okay. And when I print
> from Adobe Acrobat Standard 7 and use »print as picture/image«
> black and white are not inverted.
> What could be the reason?
The problem is probably different in your case, but here's a
configuration in which I've been faced with a similar problem.
The printers at work are managed by a CUPS server running on a Debian
Linux machine. I can print either by connecting directly to them via
AppleTalk, or by attacking the corresponding queue on the server. One
way to do the latter is edit /etc/cups/cupsd.conf by adding the line
such that when you open Printer Setup Utility and ask to add a
printer, all the printing queues managed by the server are added to
the list of available printers (with "Shared Printer" in the
However, when doing this and printing various files to this queue,
the output exhibits problems similar to those you're reporting:
- The white background of some TIFF files is turned to black (as for
the paper clip icon and the Save button accompanying attachments in
message headers in Mail.app).
- In PDF files (such as those produced by Keynote) containing
included images and possibly included PDF files, the transparency of
some images is lost, some other images are printed in "reverse
video", and some of the included PDF files have their fonts
substituted and possibly the encoding of these fonts mixed up.
None of these problems appears when dialoging directly with the
printer via AppleTalk. (The reason for preferring using the CUPS
server is that our sysadmins have created "virtual" printer queues or
classes sending jobs indifferently to several printers with automatic
load balancing between these printers; as far as I know AppleTalk
cannot be used with such printer classes.)
I've attempted to isolate the cause of the problem (our sysadmins
aren't really interested in Macs, due to lack of time), and I can
only think of two causes:
- A bug in the CUPS server on the Linux machine.
- An incorrect PPD file for the printer. In this case the printer is
a HP LaserJet 4050, and the PPD selected on the CUPS server is "HP
LaserJet 4050 Foomatic/Postscript" while the PPD selected for
AppleTalk is that included in OS X, namely, on Tiger, "/Library/
Printers/PPDs/Contents/Resources/en.lproj/HP LaserJet 4050
Series.gz". The Foomatic PPD comes, I suppose, from LinuxPrinting
it must be either too old, or improperly installed, or bugged, or
incompatible with OS X.
I think the most likely cause in your case is incorrect PPD
selection. Did you install the vendor-supplied PPD for your printer,
and did you select it when adding the printer in Printer Setup
Utility? This PPD doesn't seem to be included in OS X, but you should
be able to get it from
Hope this helps,
------------------------- Helpful Info -------------------------
Mac-TeX Website: http://www.esm.psu.edu/mac-tex/
TeX FAQ: http://www.tex.ac.uk/faq
List Archive: http://tug.org/pipermail/macostex-archives/
List Reminders & Etiquette: http://www.esm.psu.edu/mac-tex/list/
More information about the MacOSX-TeX