Digital BW, The Print

Hi Jim,

First of all, I apologize for making such a bold statement about the
problem being completely gone. It turns out I was wrong. It's much
better, but not gone completely. Low density prints are good now, but
the problem is still there to some degree when I move into higher
densities.

When I made my first test-prints on Ilford Smooth Pearl after cleaning
the density was set to 0.9 in QuadToneRIP, but when I went up to 1.4 or
1.5 the problem started to appear again.

I'm beginning to suspect it's not a printer problem, but an ink problem.
A print with only original Epson Photo Black and Light black has no
roller marks, even at very high densities. But as soon as I add
Ultratone magenta position toner inks to the mix I get the roller marks
again. I'm wondering whether it's something caused by rinsing my
cartridges with water. Maybe residual water in the cartridges is causing
the ink to dry slower.

You're right, it's dishwashing liquid, not detergent. I'm afraid the
brand name of my Norwegian dishwashing liquid isn't going to help you
very much though, but the name is Zalo. It's the kind of green soap
liquid you use when washing dishes. I used one drop mixed with one cup
of water.

I cleaned both the top and bottom rollers from the output tray and also
the top rollers from inside the printer. I only cleaned the ones at the
exit, not those further into the printer. Today I found that the easiest
way is to feed a paper through the printer and hold the spatula between
the top and bottom rollers from the output tray while the paper is
moving into the printer since both rollers will be rotating.

I need to make lots of prints this weekend, so I'm back to using matte
inks and paperrs. I'll do more experiments with this when time allows.

--
Daniel Staver
http://daniel.staver.no 

> -----Original Message-----
> From: jim hayes [mailto:jimhayes@...] 
> Sent: 6. juni 2003 16:58
> To: DigitalBlackandWhiteThePrint@yahoogroups.com
> Subject: [Digital BW] Re: Exit roller marks finally gone on my 2100
> 
> 
> Excellent! For my own reference, can you describe the kind of 
> detergent used? You mean "dishwashing liquid" right? 
> "Dishwashing detergent" is the stuff I think of as being put 
> in dishwashers.
> 
> Any special ingredients you avoided/included in your brand? 
> How dilute a solution with water? Did you change the dilution 
> towards more water as you got toward your final seventh 
> cleaning? Did you wipe across all the rollers from insde bed  
> quickly and feed sheet? Or from output tray since bottom 
> rollers may be easier to get to that way? That would only 
> cover a small part of the roller perimeter.
> 
> Sorry for all the questions, Daniel. Lately I'm wondering if 
> the rollers can also leave tiny white dots/fibers from 
> flakings from previous paper transport which then might get 
> pressed down onto paper as it dries. Just a theroy- which may 
> mean I'll use your procedure, hence all the detailed 
> questions. It could be coming from flaking from the existing 
> sheet as well. Jim H.
> 
> 
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Daniel 
> Staver" <daniel@p...> wrote:
> > Finally! I managed to get rid of those damn exit roller marks when 
> > printing on glossy papers with my 2100.
> > 
> > I did exactly what the manual says not to do and used some mild 
> > dishwashing detergent diluted in water to wash both the 
> exit rollers 
> > and the thick rollers that are just below the exit rollers. 
> I think it 
> > was important to clean both as the top rollers seemed to 
> pick up dirt 
> > and dust from the ones below.
> > 
> > I used the cleaning spatula that comes with the 2100, 
> dipped it into 
> > the soap water and squeezed it before washing the rollers. After 
> > getting all the rollers wet I would run a cleaning sheet 
> through the 
> > printer which had the double effect of drying the rollers 
> and rotating 
> > them so I could get them clean on all sides. I repeated 
> this procedure 
> > about six or seven times, after which the rollers were visibly 
> > cleaner.
> > 
> > I've run some test sheets of Ilford Smooth Pearl through my printer 
> > now, and I can't see roller marks anywhere.
> > 
> > --
> > Daniel Staver
> > http://daniel.staver.no
> 
> 
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