Re: PDF on debian
On Mon 13 Mar 2023 at 04:25:12 +0800, Jeremy Ardley wrote:
>
> On 13/3/23 03:38, Stefan Monnier wrote:
> >
> > Nowadays PDF is what matters: it's the standard format for driverless
> > printing (along with a mix of JPEG, PWG raster, or PCLm depending on
> > which driverless printing standard you're talking about). Admittedly,
> > standards like IPP Everywhere require support only for the PWG raster
> > and JPEG format, while the PDF format is relegated to "should be
> > supported", but PDF is so pervasive and so easy&cheap to support on
> > current hardware that it doesn't make much sense not to support it,
> > except maybe for printers that focus on things like printing photos.
> > [ Note: this is just a guess, I have no actual data to back it up :-) ]
> >
> I have written one printer driver in the cups system for a thermal printer.
>
> The processing chain in cups generated a raster bitmap image for me to
> format and deliver to the printer. I didn't dig deep but I suspect the
> previous stages involved postscript before raster conversion rather than
> directly from a pdf stage.
Suspicions don't quite cut it when writing a filter.
--
Brian.
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