force grayscale

[casueps]

> >>
> >>>The driver for my printer does not allow choosing between color or
> >>>grayscale, so I can only choose if the program options allow it. I want to make a filter in cups so that every user that prints through it with any program can print in grayscale.
> >>>I found the ghostscript command that reads a color PS file and outputs a grayscale PS file but I don't know how to insert it into the printer  options. Can you help me?
> >>>
> >>>
> >>
> >>Tell us what printer you are using. If it is a native PostScript printer, there may be a chance
> >>to force the printer do act as a grayscale device.
> >>
> >
> >
> > It's a Canon CLC3220. I think it's a native PostScript printer.
>
> Olease post (an URL to) the PPD you use, as there are at least two different controllers for
> this printer that support PostScript.
>

I will post the links to two PPDs, one is the specific driver for the printer and the other one is for Generic PS, we can print with both of them but neither of them allow grayscale.

http://rapidshare.de/files/35561345/ppds.zip.html