[cups-devel] print-color-mode=monochrome does not work with non-standard gray values

[Michael Sweet]

Sean,

Only "Gray" is supported for monochrome.  "KGray" is not a standard value.

> On Apr 24, 2017, at 3:45 PM, Sean Kau <skau at chromium.org> wrote:
> 
> Given a printer setup with a CUPS server containing a PPD with a
> non-standard Grey ColorModel (e.g. KGray) and a standard color option (e.g.
> RGB), CUPS advertises the printer with print-color-mode-supported =
> {color,monochrome}.  However, print jobs indicating a print-color-mode do
> not respect the attribute.
> 
> Is print-color-mode supported for printers using a ColorModel that is not
> 'Gray'?
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_________________________________________________________
Michael Sweet, Senior Printing System Engineer