[CentOS] how do I use only black ink? success

On Sun, 17 Apr 2016, Michael Hennebry wrote:

> On Sun, 17 Apr 2016, Michael Hennebry wrote:
>
>> I have an HP Photosmart C3180 All-in-one.
>> As I haven't had any need for color lately,
>> when I last replaced ink, I only replaced the black cartridge.
>> It didn't work, even when printing grayscale-only images,
>> even when telling print-set-up grayscale-only.
>
> To be precise: Black lines were black,
> but pale gray areas were an even paler yellow.
> I've just discoverd that the printer does
> the right thing with text from a pdf.
> The black ink cartridge is getting used,
> just not enough.

Much to my surprise, the color option black only grayscale
does what I want when printing from a GUI.

-- 
Michael   hennebry at web.cs.ndsu.NoDak.edu
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