[cups.general] MacOS X client misbehaving

[Helge Blischke]

Marc Lanctot wrote:
> Hi guys,
> 
> I've recently setup a printing system here at the department of 
> Atmospheric and Oceanic Sciences.
> 
> I have a SUSE Linux 9.2 server running CUPS 1.1.23.
> 
> I have a department full of printing clients, with a good variety of 
> operating systems, all of which must print via the print server 
> (printing directly to the printers is disbled).
> 
> My Linux clients are all using CUPS as well, all different versions from 
> different Linux distros, but they're working like a charm. My SGI IRIX 
> machines use lp and communicate through the CUPS lpd compatibility 
> server. For various reasons particular to my setup I could not get 
> Windows clients to work through Samba nor IPP, so they use LPR to 
> connect as well.
> 
> I have an HP Color Laserjet 4700 using the latest postscript PPD driver 
> from LinuxPrinting.org, and a queue called say 'Eg-BW' which has the 
> "Print Color as Gray" flag turned on so that black-and-white printing is 
> forced when using this queue.
> 
> Here's my problem: when I print from Adobe Reader 7.07 on a MacOS 10.3.9 
> client connecting through LPR to my Linux print server, it overrides the 
> forced black-and-white setting and prints in color anyway. We charge 
> each of our users depending on the queue used, so it's important that 
> the restrictions for each queue work on all clients. This only happens 
> on the Mac -- I can print properly from all my other clients.
> 
> Anybody know how to fix this problem?
> 
> Thanks,
> Marc
> 

Look at the following excerpt of this printer's PPD:
---snip---
*% =================================
*% Print Color as Gray
*% Chose NOT to use standard *ColorModel keyword because color on or off is simpler
*% =================================
*OpenUI *ColorModel/Print Color as Gray:  PickOne
*OrderDependency: 20 AnySetup *ColorModel
*DefaultColorModel: CMYK
*ColorModel Gray/On: "<</ProcessColorModel /DeviceGray>> setpagedevice"
*ColorModel CMYK/Off: "<</ProcessColorModel /DeviceCMYK>> setpagedevice"
*?ColorModel: "
   save
     currentpagedevice /ProcessColorModel get
	/DeviceGray eq {(Gray)}{(CMYK)}ifelse = flush
   restore
"
*End
*CloseUI: *ColorModel
---snip---
By using e.g. a job patch file in the PPD, you may force the printer to gray mode
independent of whatever the PS job requests otherwise.

Helge


-- 
Helge Blischke
Softwareentwicklung
SRZ Berlin | Firmengruppe besscom
http://www.srz.de