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A. Jacobs wrote:
> We are using Hewlett Packard Deskjet 970cxi printers in our office.
> This deskjet requires both color and black ink cartridges with ink in the
> printers for it to work.
> However, we ONLY use the black ink to print office documents.
> We are using the Windows XP and have set the printer property preference to
> print in Black only (Advance - Color).
> We found the color cartridges still being used and in time its empty and
> requires to replace with new ones.
> 
> Can you tell me how to either disable the color ink cartridge ink level
> sensors or disable to software to use any color ink at all?
> 
> We do know HP is getting rich selling us those expensive color ink
> cartridges.
> Your advise is much appreciated.
> 
> 
> 
My HP 970 needs a color cartridge to print but the 
cartridge doesn't have to have ink in it.  If you 
rotate 3 color cartridge through the 970 (put it 
in, let it do the test print, put the next 
cartridge in, etc.) it will think the last 
cartridge is full so you won't get low ink 
message.  End of problem.

Don't forget that the printer goes through a headclean cycle at start up, 
sometimes when powering off the printer and at set times during printing. 
You cannot alter that procedure. This will cause your ink cartridge to empty 
even with no colour printing. However, as each cartridge has the printhead 
on it, you can leave an empty one in the machine. The printer should 
continue to work normally, setting it to grey scale is a useful suggestion 
many printers use blue ink with the black to produce a true deep black.

-- 
Regards
Stick, Oxford, UK
#Remove the 'at' and the'dots' to reply
"A. Jacobs" <2001jgy.no@spam.yahoo.com> wrote in message 
news:tdpPe.4141$Z87.1539@newssvr14.news.prodigy.com...
> We are using Hewlett Packard Deskjet 970cxi printers in our office.
> This deskjet requires both color and black ink cartridges with ink in the
> printers for it to work.
> However, we ONLY use the black ink to print office documents.
> We are using the Windows XP and have set the printer property preference 
> to
> print in Black only (Advance - Color).
> We found the color cartridges still being used and in time its empty and
> requires to replace with new ones.
>
> Can you tell me how to either disable the color ink cartridge ink level
> sensors or disable to software to use any color ink at all?
>
> We do know HP is getting rich selling us those expensive color ink
> cartridges.
> Your advise is much appreciated.
>
>
> 

Yes, I confirm the HP Printer setting are:
Color: Grayscale: Black only
Paper: Plain paper

But with this setting, with both color and black ink cartriges installed at
the same time, the color cartidge will be used up almost 2 months before the
black cartridges.

Can you tell me how to disable the color cartidge ink level sensor?

This sound good idea.
Can you explain how?
I understand everything the ink cartridge is removed or power on, HP deskjet
printer will perform ink level checking? or, may be I am wrong?

> >
> >
> My HP 970 needs a color cartridge to print but the
> cartridge doesn't have to have ink in it.  If you
> rotate 3 color cartridge through the 970 (put it
> in, let it do the test print, put the next
> cartridge in, etc.) it will think the last
> cartridge is full so you won't get low ink
> message.  End of problem.

A. Jacobs wrote:
> This sound good idea.
> Can you explain how?
> I understand everything the ink cartridge is removed or power on, HP deskjet
> printer will perform ink level checking? or, may be I am wrong?
> 
> 
>>>
>>My HP 970 needs a color cartridge to print but the
>>cartridge doesn't have to have ink in it.  If you
>>rotate 3 color cartridge through the 970 (put it
>>in, let it do the test print, put the next
>>cartridge in, etc.) it will think the last
>>cartridge is full so you won't get low ink
>>message.  End of problem.
> 
> 
> 

The 970 assumes that any new cartridge is full and 
it also remembers the last three cartridges.   So 
if you are using cartridge A, then you put in B, 
then C, then D, and finally A, the memory of A 
being out of ink will have been lost and it 
assumes that it is a new, full cartridge.  I think 
this is the easiest way to reset the memory but 
you need save three old (a total of four ) cartridges.

BTW, there are two other  ways to reset the 
memory, one involves pushing the front buttons and 
the other is taping the contacts  I don't have 
that info in front of me but it has been well 
documented, so you should be able to find it with 
a google search.