Using cups web, I configured 2 copies of a Canon color copier and on one of them, I configured it use a black and white only.
This works fine for localhost printing.
The cups queues are shared with other hosts on the subnet. They automatically see the printers but when they print to the shared queue, the page comes out in color unless they specifically change it and do not consider the cups configuration option.
as far as I can tell, the difference is in the ppd file that is saved by the cups web interface...
grep DefaultColorModel ppd/Canon_5870* ppd/Canon_5870_bw.ppd:*DefaultColorModel: Gray ppd/Canon_5870.ppd:*DefaultColorModel: Default
which I would have thought would have been transmitted to the user printing via a cups shared printer but it isn't.
Any thoughts?
Craig