Digital BW, The Print

Using old CIS's that had been sitting around for a while totally killed the
head of my 1160.  I'm not sure what the exact cause of the problem was, but
I suspect something is drying out in those systems when they are sitting
around unused.  (One thread here seemed to indicate that the tubes allow
some air to seep through.  I would think that dried ink around the outlets
might also be a source of problems.)

While the ink that caused my problem was Generations, I suspect all
pigmented ink would cause the same problem.  In fact, I suspect that the
VM/FS black and all the old Piezo inks would be the worst due to the more
volatile co-solvent base that is used in those inks.  (But that co-solvent
is probably one of the reasons the VM/FS and PiezoBW blacks -- not the new
PT K --  were the best all-pigment blacks I've tested.)

At any rate, I'd be reluctant to use a CIS that had been lying around unused
for too long.  Replacing the head of my 1160 was not cheap.

Paul
http://www.PaulRoark.com


_________________________
  -----Original Message-----
  From: azshtr [mailto:dave@...]
  Sent: Tuesday, July 09, 2002 11:46 AM
  To: DigitalBlackandWhiteThePrint@yahoogroups.com
  Subject: Re: [Digital BW] Cleaning Nomorecarts CIS tubes


  --- In DigitalBlackandWhiteThePrint@y...,
  Bernhard.Schuerlein@t... wrote:
  > ----- Original Message -----
  > From: "k2_chittin" <k2chittin@l...>
  >
  > > MIS VM with a new set of carts.  Having washed out the old
  ink with
  > > warm water, I'm unable to get the "black" tube completely
  clean.  Has
  > > anyone who has done something similar been able to
  completely clean
  > > their tubes?
  >
  > This is funny, because after some 3 weeks of no printing my
  black cart tube
  > was permanently clogged and I had to get replacement from
  MIS. The clolour
  > ink tubes were fine however...
  >
  > greetings Bernhard

  Ditto... after not using my system for a while the nozzle check
  showed no black. After much cleaning and trouble shooting it
  turned out the Black line was hardened, completly dry inside in
  places.

  Dave


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