HP 932C Black and Color ink cartridges.
noname
When I print in grayscale, I'm sure that my printer uses color cartridge
too!
Is it normal for this model?
Any answer will be very appreciated.
m...@here.com
> I'm really disappointed with my new printer HP 932C.
> When I print in grayscale, I'm sure that my printer uses color cartridge
> too!
> Is it normal for this model?
Yes.
> Any answer will be very appreciated.
Try plain paper normal mode. Note, if you're printing line
art or photos, the black ink will provide an inferior quality
print. The black ink is good for text (it's their for text
printing!) but questionable for everything else.
B. Chan
If you want black ink only, select the option "optimise for fax"
Biu Chan.
"noname" <non...@none.com> ?????
news:M2bB5.2087$O95.1...@typhoon.tampabay.rr.com...
Chris Bennett
printed 1000's of pages this way with no change to the colour ink
levels.
Chris Bennett
== To send E-Mail, replace "abc" with "sympatico.ca".==
Andrew Rossmann
This is normal for all modes other than plain paper EconoFast/Normal (and
possibly a few other low-res modes.) The reason is that HP has finer control
over the color cartridge than the black. In fact, I wouldn't be surprised to see
HP drop the black cartridge entirely someday. Either that, or they come up with
a new design that allows finer control.
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Bob Nedved
"noname" <non...@none.com> wrote in message
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This is actually the norm for MOST printers nowdays that use pigmented black
ink. There are several reasons, but the most popular is Ink Droplet Size.
The color ink cartridges on most printers today are capable of delivering
droplets of ink smaller than 9 pl (picoliters). This means that these are
BARELY discernable drops of ink. This is easy when you use dye based inks,
because the dye itself can be dropped in very small quantities and still
color the paper. When you deal with a pigmented ink, however, you are not
using DYE to color the paper, you are using particles of matter. These
particles of matter only get so small. While the dye based inks may have
droplets on the order of 9 pl or less, the pigmented cartridges have
droplets above 35pl in size. I believe the 51645A cartridge that the 932
uses has 38 picoliter ink droplets. The newest printer in HP's lineup, the
2200 series, uses 18pl drops (still much bigger than it's 4pl color ink
droplets).
What this means is that when you need to do a very light area of gray, the
only possible way would be to use largely spaced areas of large-droplets -
which would lead to a pixellated (and UGLY) print. You can verify this to
yourself by sticking your printer in econofast mode and clicking the
greyscale option - the dots are largely spaced and the printout is dull and
terrible (and this isn't just because it's econo mode, it's because it's
trying to produce good grey shading from a cartridge not capable of the tiny
dots necessary to do so).
Lexmarks and Canon's also do it. Some of the Epsons do, although it's not
as common because most of them are using dye based black inks, which means
that the ink droplets can be small enough for them to allow precise shading.
Now you may ask, "why use pigmented ink?" - well, this is simple -
Waterfastness is much better, and for text printing - you can't do any
better - nice, crisp, sharp edges and nearly waterproof output - that is the
tradeoff.
You would also notice that in photo mode, your printer will even print BLACK
areas with the color cartridge simply because on photo papers, Pigmented
inks do not "soak in" the same way as dye based inks - this means that if
the pigmented and dye inks were laid down together to blend, it wouldnt
happen and the result would look "un-natural"
HP's newest printer, the 990 - acheives it's HIGH print speed by using a
combination of the color and black cartridges together all the time -
imagine how much ink the owners of that printer will go through :)
Bob.
www.reinkkit.com
* * Chas
Print/Properties/Setup/PaperSettings or just by using plain paper. I use HP
Bright White InkJet Paper.
Do you know what the difference is between the 2 paper settings?
--
Chas. ver...@aol.spamski.com (Drop spamski to E-mail me)
"Chris Bennett" <chris.bennett3@abc> wrote in message
news:sh7WOR6EReh9Ot...@4ax.com...
> Use "draft" mode on plain paper. Only the black ink will be used. I
> printed 1000's of pages this way with no change to the colour ink
> levels.
>
> Chris Bennett
>
> == To send E-Mail, replace "abc" with "sympatico.ca".==
>
> On Sat, 30 Sep 2000 01:09:00 GMT, "noname" <non...@none.com> wrote:
>
Andrew Rossmann
> HP's newest printer, the 990 - acheives it's HIGH print speed by using a
> combination of the color and black cartridges together all the time -
> imagine how much ink the owners of that printer will go through :)
??? The only mode where the 990 is faster than the 970 is Econofast. In
Normal, it's the same. In Best, it's rated much slower.
Chris Bennett
Print/Properties/Setup/PaperSettings.
I also use regular photocopier paper for most printing (such as the
IBM computer manuals I just produced). I do have some bright white HP
paper (brightness of 96) and some Xerox bright white (99) but do not
use that paper very often.
I am very happy with the quality in "Draft" mode. I do not feel the
need to print with "Normal" or "Best" mode especially when they are
much slower.
Chris Bennett
== To send E-Mail, replace "abc" with "sympatico.ca".==
Bob Nedved
news:39D75975...@ntsource.no_junk.com...
> Bob Nedved wrote:
>
> > HP's newest printer, the 990 - acheives it's HIGH print speed by using a
> > combination of the color and black cartridges together all the time -
> > imagine how much ink the owners of that printer will go through :)
>
> Normal, it's the same. In Best, it's rated much slower.
Actually, I misread the article - check below. It does use black and color
in what it calls "K Fortification" but it was not intended to increase
speed. They had a picture that said underneath it "K Fortification in the
DeskJet 990C uses color ink to print black text at 17ppm" - so this led me
to believe it was speed oriented.... Kind of misleading... the article is
below. Regardless, the 990 wastes more ink than previous printers.
According to "The Hard Copy Supplies Journal, Volume 6, Number 9" from Lyra
Research:
"In addition to all its other inkjet releases this month, Hewlett-Packard
unveiled a new Deskjet product on September 5. The DeskJet 990C is designed
for small office applications and will replace the Deskjet 970C. It delivers
print speeds of 17 ppm for black-and-white jobs and 13 ppm when printing
color. The 990C has a 5,000-page-per-month duty cycle and carries an
estimated street price of $399. The Deskjet 990C does not break any ground
in terms of new supplies, but it is still bound to attract some attention
because of how it works with consumables. The machine can use either the HP
51645A or G black cartridge and the No. 78 tricolor cartridges.
What is unique is the manner in which it uses both cartridges to enhance its
black printing. The machine puts down a layer of process gray created with
the CMY dye-based ink and then applies the pigmented black on top of the
gray. As a result, the pigment falls out of solution and rises to the top of
the aqueous dye, improving the black density. HP calls the process 'K
fortification,' and it is sure to boost the amount of ink used when printing
black and improve image quality. In regard to media, the machine has a new
optical media sensor that can clifferen- tiate between plain paper and
coated media, such as photo paper, transparencies, and other specialty
media. The sensor automatically adjusts the print setting or defaults to the
plain paper setting. Of course, the sensor is calibrated to recognize the
various types of Hewlett Packard inkjet media"
(If there are errors in the above - it is because I used OCR and my
scanner...)
Bob.
www.reinkkit.com
Andrew Rossmann
> What is unique is the manner in which it uses both cartridges to enhance its
> black printing. The machine puts down a layer of process gray created with
> the CMY dye-based ink and then applies the pigmented black on top of the
> gray. As a result, the pigment falls out of solution and rises to the top of
> the aqueous dye, improving the black density. HP calls the process 'K
> fortification,' and it is sure to boost the amount of ink used when printing
> black and improve image quality. In regard to media, the machine has a new
> optical media sensor that can clifferen- tiate between plain paper and
> coated media, such as photo paper, transparencies, and other specialty
> media. The sensor automatically adjusts the print setting or defaults to the
> plain paper setting. Of course, the sensor is calibrated to recognize the
> various types of Hewlett Packard inkjet media"
Very interesting. I wonder if there truely is a noticeable difference. I
wonder if this may end up being a prelude to dropping the black cartridge
entirely.
* * Chas
Plain Paper settings with a color cartridge that was out of Cyan ink to test
your recommendation.
Grays came out red indicating that the 970 was still using the color
cartridge to print gray. I had the same results with every other
recommendation for printing gray scales with only the black cartridge. It
may not be possible.
--
Chas. ver...@aol.spamski.com (Drop spamski to E-mail me)
"B. Chan" <See....@Email.com> wrote in message
news:eXmB5.99209$i5.34...@news1.rdc2.on.home.com...
> Yes, it uses the colour ink to make better greyscale.
> If you want black ink only, select the option "optimise for fax"
>
> Biu Chan.
>
> "noname" <non...@none.com> ?????
> news:M2bB5.2087$O95.1...@typhoon.tampabay.rr.com...