PCL Driver

[Anonymous]

Hi,

How do we discribe PPD file for PCL Color printer ? We want to modify
color gradations. DDK document mentions it is possible to change
raster color data. In our side check, gradation was changed by "cupsColorProfile" discription. But, unfortunately it was B/W !
We need Color(CMYK) print-out modified gradations.


> Anonymous wrote:
> >> Anonymous wrote:
> >>> Hi,
> >>>
> >>> I am developing a PCL driver usring cups ddk. How do implement the
> >>> features like scaling and halftoning.
> >>>
> >>>      I need to provide these options in the CUPS web interface.
> >>> The scaling option should be in percentage. And halftoning
> >>> would be 1. Patterned grays,
> >>>          2. Diffused Grays and
> >>>          3. Solid Black and white.
> >>> What are the thing that are needed to be done to provide these options
> >>> in the web interface.
> >> They need to be options in the PPD file, and then they'll show up
> >> in the web interface (and any other interface that uses the PPD file)
> >>
> >> --
> >> ______________________________________________________________________
> >> Michael Sweet, Easy Software Products           mike at easysw dot com
> >> Internet Printing and Document Software          http://www.easysw.com
> >
> > Thanks for the help but what i need to know is where should i imple ment these features, is it the rastertopclx filter or somewhere else
> > Scaling, negative printing and haftone options dont work by only providing them in the PPD file.
> > also "lp -o scaling=<percent> <filename>" doesent work how do i make it work.
>
> That's beyond the scope of PPD files, or support on the free forums
> for that matter.
>
> "scaling" is a standard option, but it only applies to *image* files.
> That's why you'll find it documented under the "image options" section
> of the SUM.  If you try to scale a PostScript file, for example, it
> will do nothing.
>
> Negative printing and halftone options may be implemented either as
> straight PostScript code or in the filter, in which case you'd need
> to modify the rastertopclx code.
>
> --
> ______________________________________________________________________
> Michael Sweet, Easy Software Products           mike at easysw dot com
> Internet Printing and Publishing Software        http://www.easysw.com