On Mon, 26 Apr 2021 16:18:29 -0400, Andreas Kohlbach
wrote:

On Mon, 26 Apr 2021 22:10:00 +0200, a wrote:

On Mon, 26 Apr 2021 13:01:36 -0400, Andreas Kohlbach
wrote:

On Mon, 26 Apr 2021 15:50:29 +0200, a wrote:

- I'm with:
HP officejet 6830 pro
Windows 10 Home

- my aim:
save black ink

- how accomplish that:
I think (if I'm not wrong...)
it could be accomplished
by using an icc profile (edited by me)
where I substitute the 'black' color with a 'dark grey' color
and then
by telling the printer to use this icc profile,
so the printer will never print blak
and will always print dark grey

- answer:
is this method correct?
(if it is correct, I will ask you few questions
on how to tell my printer to use this new icc profile)

Is it possible to just remove the black cartridge that the printer would
not cease working?

Mmmhh... I don't know,
but even if it will work,
it will not be the solution I like,
because black cartridge is less expensive
than color cartridge.

So I prefer buy and use the black cartrige, and,
instead of printing "black" color,
I 'd like to print "dark grey"...

[...]

Not using Windows but Linux, the print system relies on the CUPS print
server. There I can tell the printer to use monochrome. Won't test it
(almost out of ink as well as of paper), thus cannot tell if it would use
the b/w cartridge or compose the printout using the color cartridges to
produce gray scale.

So it might depend on what the driver decides which cartridges to use if
monochrome is selected.

Check your driver options and set it to monochrome. If it still uses the
b/w cartridge, you're out of luck. Unless the printer doesn't refuse to
print if you physically remove the black cartridge.

I noted this:

when the black ink has finished (empty),
the printer uses the three color inks to "imitate" the black color

the printer itself warns and asks:
"The black ink is over, do you want to use the color inks
to keep on printing?"
I say 'yes' and the printer keeps on printing,
with good result (I have a paper with a dark grey or a dark brown
instead of black, but it is acceptable)