On Sat, 26 May 2012 16:26:34 +0100, Brian wrote: > On Sat 26 May 2012 at 13:30:27 +0000, Camaleón wrote: > >> On Sat, 26 May 2012 13:01:16 +0100, Brian wrote: >> >> There's no "cupsFilter:" line in any of PPD files so maybe the printer >> is not a true PostScript printer or uses a slightly different >> implementation developed by HP. > > That is not relevant to the point I made but, to satisfy your curiosity: > if there no *cupsFilter line in a PPD file then CUPS assumes the printer > requires a backend to send it PostScript. Nothing to do with a 'true > PostScript printer', whatever that might be. Either the printer has a > PostScript interpreter or it doesn't. Many manufacturers implement their > own anyway.
It's not that simple. There are some printes (mostly the low-end models) that can "simulate" a PostScript level in a way that only the manufacturer knows, not standarized, thus you still depend on the quality of the manufacturer's driver. >> > The standard language used for printing in Debian has been PDF for >> > over three years. There is no inherent benefit in inputting a >> > PostScript file to CUPS. >> >> I assure there is. > > But at least you have discarded "PostScript is a raw language, no > conversion is needed between the doc and the printer . . . ." as a > reason and accept the filter chain is > > PDF file ---> PS file ---> CUPS ---> PDF file > > Is it a comfort getting back to where you started? "No conversion is needed" because the printer understands the PostScript language, it's not device dependant. I don't know how to express it better but is not that hard to understand. >> > You are also confusing the input file with the file sent by a CUPS >> > backend to the printer. In the latter case, you reply completely on >> > the capabilities of the printer's interpreters whether the file >> > contains PostScript, PCL or any other language. >> >> If the printer does support PostScript and uses a PS driver, the above >> is completely irrelevant. > > I have a feeling you may have returned to "PostScript is a raw language, > no conversion is needed between the doc and the printer . . . ." idea. > Hope I'm wrong. No, you're not, but this is not going to help the OP to solve his problem. Greetings, -- Camaleón -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/jpqu8v$dh7$1...@dough.gmane.org