Archived from groups: comp.periphs.printers (
More info?)
"Bill" <bill@c.a> wrote in message news:G9GdnXuFsO0r203cRVn-ow@golden.net...
> Bob Headrick wrote:
>>The black #56 cartridge will be used for text and black graphics such as line
>>drawing. This is not done on a page basis but on an "object" basis. A mixed
>>text and graphics page will use the #56 for the text, and a mixture for the
>>graphics objects.
>
> Does that apply to all or most of the HP printer models?
Yes, if... you are using HP drivers and the application is behaving and it is a
current model (last few years at least). I remember an issue with Word a few
revisions back that would append a special character to the end of a paragraph.
The printer would interpret this as a graphic character making the entire text
block a graphic object.
> I had a Canon i850 that would not print on an object basis at all. It
> insisted on using the three colours to produce black if there was ANY
> colour anywhere on the page.
>
> I don't know how to verify if my DeskJet 6540 does that or not. Perhaps
> use a 5x loupe to examine the output?
Yes, or you could put an empty black cartridge in the printer. You could also
try pulling on the paper during a printing swath, then you could then see what
the individual cartridges are printing. *This will probably cause a printing
error, but you should see one swath from each cartridge printed at an angle, it
should be easy enough to see which cartridge was printing which parts.
>>When printing on photo media the #56 pigmented black cartridge is not used.
>
> Are you sure about that? My DeskJet 6540 appears to use the #96 black
> when printing photos with the #97 if the #98 photo cartridge is not
> installed.
Yes, the pigmented ink is not compatible with glossy photo paper and is not
used when printing if photo paper is selected in the paper type, or the paper
type is left on "auto" with photo paper installed. The DeskJet 6540 has an
automatic paper sense that should print with the correct print modes. The
print mode for glossy media does a pretty good job of mixing the cyan, magenta
and yellow in the #97 cartridge in photo mode to provide a pretty respectable
looking black in the photo without using the black ink.
Regards,
Bob Headrick, not speaking for my employer HP