RasterToEscpX.c implementing > 720dpi

Anonymous anonymous at easysw.com
Wed Feb 15 05:58:37 PST 2006


                      Hello!

P'raps You could give me a clue...

I use the cupsddk-1.0.1 RasterToEscpX.c code to generate - from the raster data generated by the ImageToRaster.c - the end EscP data for the Epson Stylus Photo R200.

It works alright for resolutions up to 720dpi only.
(HWResolution[0..1]<=720).

Of course I'm quite aware it's the maximum 'hardware' resolution of the R200 printhead itself - and generally higher (than 720) resolutions are attained through positioning the printhead - 'within' its own resolution scope - which is supported with a higher precision by the printhead positioning mechanism.

Again I see a 'multi-line' software algorithm making use of such method must differ considerably.

So couldn't you advise me:
1. if the said RasterToEscpX.c code does implement such method at all?
and if so
2. what parameters could be adjusted to make it work?

I suspected the 'cupsRowCount' 'cupsRowFeed' 'cupsRowStep' members of the raster header might have to do with the issue and had even tried to set them (cupsRowCount > 1) at guess but - expectedly - without success.

Also I've never found any detailed description of their exact meaning nor corresponding attributes in the PPD files and understand them to be device-specific.

I'd greatly appreciate any info and recommendations You would or could give me on this issue.
Anyways looking eagerly for Your answer and thanks in advance.

Andrew.

P.S.
I've already posted the message above at cups.developement but then reconsidered it more appropriate here.
Sorry if it's inappropriate either-where
      and/or for the inconvenience.








More information about the cups mailing list