CUPS PPD file for Sharp MX-M350N?

Hi all,

My work just got a nice heavy-duty Sharp MX-M350N copier/printer/scanner
(http://www.sharpinbusiness.co.uk/specifications.asp?
product_id=945&category_id=16). After some trial-and-error, I figured
out that this particular model does *not* have the PostScript option
installed, but understands PCL6.

Now I have it working great over the network using the Gutenprint PCL6
driver with CUPS. Duplex works, text, images, etc. The only thing that
*doesn't* work with the generic driver is stapling...

I found some custom PPD files for this and similar printers at
OpenPrinting (http://www.openprinting.org/show_pri...?recnum=Sharp-
MX-M350U), but they are only for PostScript mode, unfortunately. Does
anyone know if or where I can find PPD files for this printer/copier in
PCL6 mode, that would allow me to use the stapling feature?

Thanks!

Dan