Digital BW, The Print

on 3/29/2002 9:57 AM, DigitalBlackandWhiteThePrint@yahoogroups.com at
DigitalBlackandWhiteThePrint@yahoogroups.com wrote:

> Message: 21
> Date: Fri, 29 Mar 2002 10:28:50 -0700
> From: "Jim HARRIS" <harrisji@...>
> Subject: anyone cured Piezo DSS with MIS inks?
> 
> I seem to have no luck with digital black & white.
> 
> I started with the Piezography system on an 1160 printer.  Got beautiful,
> stunning results.  But after a few months the dreaded "Density Shift Syndrome"
> (DSS) set in with severely washed out midtones and a greenish cast.  Inkjet
> mall was very good about sending me replacement cartridges for my CIS system.
> I reinstalled Piezo inks in a new 1160 and got beautiful results again....for
> about 4-6 weeks.  Then signs of DSS appeared in the new printer.  I
> reluctantly decided to throw in the towel with Piezo inks and give MIS FS inks
> a try after reading so many good things about them in this group.
> 
> Today I hooked up new cartridges on my CIS system,filled them with new MIS FS
> ink, and got perfect nozzle checks the first time.  Then I tried printing only
> to discover that I still have absolutely no density in the mid-tones.  The
> prints are actually worse than my worst Piezo DSS prints - almost solarized.
> 
> I just printed a gray-scale step-wedge and found that things appear normal
> from about 0% to around 30% and from about 85-90% to 100%.  But from about 35%
> to 80% things are a real mess.  There's a catastrophic drop in density from
> 85% to 80%, no discernable difference in density from about 60% to 80%, and
> the density at 50-55% is actually greater than from 60% to 80%.
> 
> What is going on?  If any of you can give me some guidance, I'd appreciate it
> very much.  To help eliminate some variables:
> 
> 1. I am printing on the right side of the paper (I'm using EAM with the logo
> on the back).
> 2.  I double and triple-checked the inks before loading my CIS system.  I am
> certain that I loaded the inks, as labeled by MIS, in the right positions.
> 
> Here's what I'm afraid of.  Could a severe case of DSS with the Piezo inks
> have done permanent damage o my print head?  I did put the MIS inks into the
> 1160 that had a very bad case of DSS, but I have run a full set of Epson
> cartridges through it since then and it seemed to be printing just fine with
> the color inks (although I didn't ever print anything too critical with it and
> carefully analyze the results).
> 
> Any thoughts, suggestions, advice, etc. would be appreciated.
> 
> Thanks,
> 
> Jim

Jim,

MIS might have mislabeled the inks.  I'm on a new set of piezo inks and so
far they have been alright.  I'm concerned though because the color was
greener than the preloaded carts right from the get go.  I've saved sample
prints from the fresh inks as a control to see when the DSS starts anew.  I
did notice that the replacement carts from Inkjet mall were a little
different than the originals that came on the CIS.  Hopefully this will
help.  Let us know how this turns out as I'm considering getting the MIS FS
inks when the piezo run out or turn bad again, whichever come first.
 
-Bruce

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