Digital BW, The Print

Ingo,

You wrote, in part:

>Is there a way to get the ebony black working well?

I'm sorry to hear you're having problems, and I'm no expert in theses
machines.   However, as to whether Eboni can run well in a 7500, my
experience is that it can.  All I did with my 7500 is a "prepare for
transport" to drain the Archival black, and then I loaded the UT carts,
including Eboni.  The 7500 has run very smoothly with almost no clogs.  It
sat unused for 10 weeks and only needed 3 cleaning cycles to get a perfect
nozzle check.  So, it can be done.

One thing that I'm very careful to do in loading 7500 carts with ink is to
be sure all the foam and air is out of the cartridge.  When I inject the
ink, I have the syringe at an angle so that the ink stream hits the side of
the bag and not the pool of ink directly.  When full, I slowly withdraw the
syringe, sucking out the air and foam as I go.

In general, we know that Eboni is sensitive to dyes.  I'm suspicious that
Epson Archival K does contain some dye.  The 7500 I bought was so little
used, that it's possible there was not enough dye to matter.

MIS recommends that large format printers have a flushing fluid put them to
get the dyes out of the dampers.  Either I was lucky, or the Archival K
doesn't have enough dye in it to matter with respect to the dampers.

However, there is also a possibility that, if the 7500 was not fairly new,
there might be enough dye on the parking pads to cause trouble.  So, I'd
consider rinsing them with Windex and wiping off the surface of the pads
rather thoroughly.  Then try to wipe the heads with a Windex-soaked paper
towel.  That did the trick with my 1280, which was showing deflected nozzle
check patterns -- possibly evidence of surface solids on the head.

Good luck.

Paul
http://www.PaulRoark.com
_______________________________________




-----Original Message-----
From: patchy6513 [mailto:ingo.meyer@...]
Sent: Monday, October 27, 2003 3:10 AM
To: DigitalBlackandWhiteThePrint@yahoogroups.com
Subject: [Digital BW] Help needed: Epson 7500 ebony clogged


Hello,
last weekend I really went through hell.

I installed a set of UT in my Epson 7500. After filling the cartriges
everything went fine so far. I couldn\ufffdt get a good nozzle check in
the evening so I waited untill the next morning and it seemed that
the problem had settled down. So I tried a first printout with Pauls
curves wich were not bad. Suddenly after another sheet of paper black
ink purged like drops on the paper and the black was nearly totaly
blocked. So I did an "initial fill" cycle to get air bubbles out.
After many attempts of cleaning and intitial fill cycles I am still
not getting a good nozzle check or print out. When I print a "print
pattern" from the service menu I can see od horizontal misalignments
in the black. These alignments lines behave like declining curves but
there are no dots missing. I don\ufffdt have any explanation for that. All
other inks work fine.

Please help with any ideas. Is there a way to get the ebony black
working well? I really hope I haven\ufffdt damaged the printer.

Another thing: I know some people sucking out ink from the tubes with
an negativ fill adapter. Can someone give a good description may be
with pictures how to do this?

Regards,

Ingo Meyer