HP 6578 Weird Color Contamination

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Dennise

I recently refilled (1st refill) an HP 6578 cartridge for my HP 932
printer. I was very careful to inject the correct colors in the right
chambers, and was also careful not to overfill.

Well, printing was OK for about 2-3 pages, then bam!! The yellow
dissapeared and is instead magenta. The correct magenta and cyan
chambers are OK. Nozzle colors now are magenta, magenta and cyan. I
did the damp towell blot test and indeed the nozzles are magenta,
magenta and cyan. I wicked out ink in this manner for about 10 minutes
but still magenta, magenta and cyan ........... no yellow!

Now for the bizzare part. The "toothpick" test shows the right colors
in the right chambers ..... all normal... yellow, magenta and cyan.
How can I get this contamination to clear out, and see the three
colors at the nozzles?

Ideas, theories? Can this cartridge be saved?

Thanks in advence.
 
Ok try more wicking Dennise
Or print a full page of Magenta create with a graphics prog.
safe refill amount SLOWLY into each chamber is 5-7ml

Think when filling the MAG chamber its gone across into the yellow one

Try more wicking

or solid MAG printing
 
But Smith the 3 chambers are separate in the cart or not? said:
Ok try more wicking Dennise
Or print a full page of Magenta create with a graphics prog.
safe refill amount SLOWLY into each chamber is 5-7ml

Think when filling the MAG chamber its gone across into the yellow one

Try more wicking

or solid MAG printing
Click to expand...
 
Smith said:
Ok try more wicking Dennise
Or print a full page of Magenta create with a graphics prog.
safe refill amount SLOWLY into each chamber is 5-7ml

Think when filling the MAG chamber its gone across into the yellow one

Try more wicking

or solid MAG printing
Click to expand...
Printing a page of yellow would be of more use. The only way It could
get into the Yellow chamber Is if it was placed there either during the
refill or maybe Its drawn some excess magenta up though the nozzles.
Emptying the yellow chamber of the magenta ink, by a clean cycle or
printing yellow only might be possible, but The foam will still have a
trace. That could eventually disappear, but I would not use it for
Photograph's until certain.
 
Here's an update on what I have tried.

Printed several (about 10-12) "all yellow" only test pages. The yellow
printed color gradually changed from magenta-to-red-to-orange-to-brown
with a little yellow sometimes. The color change stopped with a sort
of brownish yellow color, with no noticible improvement after this
color.

Then I printed several "all magenta" only test pages. The magenta
print was normal.

Then I printed a couple "all yellow" only test pages again. The yellow
print seems to be stuck at the brownish yellow color.

By the way, during my refill operation I am certain that I did NOT put
any wrong inks in the wrong chambers. The yellow contamination likely
came from an overfill, but I'm not sure (I never saw any ink emerge
from the fill holes on top). I just do not understand how the
contamination appears to now be permanent after all those
flushing/purging print pages. It appears the "leaked" magenta got into
the yellow chamber/sponge and is somehow there for good, and
dominating the yellow ink there.


Well it looks like this cart is now useless with only cyan, magenta
and brownish yellow colors. It's the mystery and not knowing that
intriques me together with not learning how to avoid this problem in
the future. Paying HP $60 each time I need a new cart is NOT an
option.

Dennise
 
geocha said:
i think that you should buy a prime tool.
Click to expand...

Geocha,

I have a prime tool. I used it after the refill before I put the cart
back in the printer. Do you think doing another prime would pull some
yellow ink out that would somehow "overpower" the leaked magenta?


Dennise
 
geocha said:
But Smith the 3 chambers are separate in the cart or not?<[email protected]>
Click to expand...
Yes they are BUT overfilling will cause migration across the nozzle plate ie
the drips from one color will travel across and even inside just above the
nozzle plate you can get migration
Thing to do is fill GENTLY no undue pressure is desirable
 
Dennise said:
"geocha" <[email protected]> wrote in message

Geocha,

I have a prime tool. I used it after the refill before I put the cart
back in the printer. Do you think doing another prime would pull some
yellow ink out that would somehow "overpower" the leaked magenta?


Dennise
Click to expand...
Seems like Yellow foam is badly tinted from the MAgenta
When I fill the #78 I use a plastic cup to hold it upright the nozzle plate
rests of several layers of folded tissue this wicks any drips or stops cross
migration.
I also use the prime tool but NOT always I prefer the DOWNUNDER method
The thing with the prime tool is as you draw C M and Y from the nozzles it
mixes to black but noticed you tent to get cross contamination .. some
dabbing on tissue or printing some solid colors .. or just a printer clean
fixes it

HTH
 
i have a prime tool that is separated.
At the bottom has 3 holes for priming,one for every color.I think that you
need this one.So you can prime only the yellow.
 
Geocha,

Yes, a prime tool that can do individual chambers would be better, but
mine does all three.

Well, using my prime tool I sucked out about 3-5 cc of ink from the
cart. It was mostly black. Then I injected about 3-5cc of yellow into
the yellow chamber. Primed again .... mostly black.

Back into my 932C printer for a test. You guessed ....... cyan,
magenta and that stuborn brownish-yellow color. All three colors print
clean with all nozzles firing, but my yellow looks like it's gone for
good.

I suppose I could somehow purge and flush out ALL the yellow with a
cleaning fluid, then replace with yellow and try again, but I've lost
confidence now and am ready to trash the cart. Where did you get the
prime tool that can prime individual chambers?

Any last suggestions?

Dennise
 
I think that you must not run a clean cicle if the cart does fire because
it may burn the nozzles.
You can try blocking the red and blue nozzles with a piece of zelofan or
something similar and then prime.
In this way you will block the flow of red and blue and prime only yellow.
Try it you don't have anything to lose.
How many times have you refilled the cart?
I live in Italy and found the tool from www.producers.it
You should e-mail then asking for this special tool.It is Yellow.
 
Geocha,

Good idea for priming the yellow only. I'll try it as I have nothing
to loose.

By the way, this is the 1st refill on this cart. It is the original HP
cart that came with my new HP932C printer. Also, after the
(external)prime, when I put it back in the printer, I didn't run any
printer based clean or prime cycles because I could see the ink
comming from the nozzles outside the printer using the prime tool.
Once in the printer, I have been printing some of my own test files
the have selected pure colors, like a full page of only yellow for
example.

Dennise
 
The contamination of the yellow through the heads is very difficult.How did
you do it?
You overfill the cart?
My opinion is that when you refill it close the head with zelofan.I put the
cart in the primer and the 3 colors are separated.
 
Remember !
Never put a lot of ink in the cart.
MAX 8-10 cc and SLOOOOOWLY pulling out of the cart at the same the needle.
Be patient :)
 
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