Digital BW, The Print

----- Original Message -----
From: "jimhayes361" <jimhayes@...>
To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
Sent: Wednesday, March 13, 2002 5:03 PM
Subject: Re: [Digital BW] k microbanding 1280 w/ VM


> --- In DigitalBlackandWhiteThePrint@y..., "Martin Wesley"
> <mwesley250@e...> wrote:

(snip)
>
> Yes, it has only started doing it today. I have a print with LOTS of k
> in it, like 92-98%k. I printed it a few weeks ago, no problem,
> beautiful. I compare it to a print done today, same settings,
> everything else the same (btw I'm using curves I got from Paul for
> printing at 2880 dpi- so I'm at that resolution printing this both
> times)- cordury. It vanishes lighter than about 90%k.

Jim,

The k seems to be the most troublesome ink in the VM set. I have had it fade
out in the middle of 13x19 print on $4 per sheet paper and then come back in
towards the end. This occurred when I was printing some images will lots of
black for a print exchange and I was doing multiple copies as well.
> >
> > I have let bottles get very low. In fact the yellow ran empty not
> too long
> > ago and I had no banding problems.
>
> The pressure head of a non CIS cart vs a CIS/CFS bottle would work
> different I bet, but my head hurts too much right now to think about
> it<g>.

I thought that there is probably more back pressure on the CIS than the
cartridges due to the need to pull the ink the extra distance from the
bottles. After refilling my yellow bottle and printing a purge page I was
amazed at how quickly the yellow was sucked into the tube and I have the
extra long tubing to put the bottles behind the printer. Given that the
bottles and cartridges are on a similar level the amount of drag in the
Tygon tubing is probably negligible and not as big a factor as I once
believed.
>
>(snip)>
> >
> > If you can only see it under magnification or at unusually close
> viewing
> > distances I don't worry about it.
>
> It's visable a good foot away under a good quality Ott-lite, no loupe.
> Very apparent when comparing to print I did some weeks ago.
>
> But we may still be talking borderline maybe for most folks.

Well that sounds like it is on the edge of acceptability but no two sets of
eyes are the same.
>
(snip)
>
> I'll show it to a person or two and see if they catch it.

My wife is always my victim for this and other comparisons. The standard
answer is , "What difference? Are you nuts, they are identical." Helps me
form my own opinions one way or the other.
>
(snip)
>
> Nozzles checks great before and after. I even take loupes/lighttables
> to my nozzle checks when in doubt- these look fine.

Have you tried a different paper? I wonder if some of this is not related to
variations in the paper receptor coatings.
>
> But I think it would be wise to do an alignment, although the lines
> are parallell to shorter edge.

How do you go about assessing the alignment squares on second part of the
1280 alignment procedure? The differences are pretty easy to see with color
inks but with gray scale it is tough.
>
>  You
> > have more experience than anyone in cleaning heads and printer.
>
> Yeah, unfortunately.<g>

You deserve a Purple Heart!

Martin

>
> Thanks for the advice, much appreciated.
> Jim H.
>
> >
> > Martin Wesley
> >
> >
> > ----- Original Message -----
> > From: "jimhayes361" <jimhayes@j...>
> > To: <DigitalBlackandWhiteThePrint@y...>
> > Sent: Wednesday, March 13, 2002 3:03 PM
> > Subject: [Digital BW] k microbanding 1280 w/ VM
> >
> >
> > > I just picked up a very fine microbanding, really a cordury,
> parallel
> > > to shorter edge, but only in shadow areas on Eclipse Satine 190
> gm.
> > > I'm printing using Paul's curves for 2880 dpi. I've never seen
> this
> > > before. Only thing I can think of is k cart is a little low at 10%
> > > left (no CIS or CFS in yet).
> > > Thoughts?
> > > Jm H.
> > >
> > >
> > >
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> Please visit the Group Homepage to check the Files, Bookmarks, Polls and
other resources as they are often being updated. The page is at:
>
> http://groups.yahoo.com/group/DigitalBlackandWhiteThePrint
>
> Please follow these basic guidelines:
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them short.
> - As the topic of a thread changes remember to change the subject header.
> - Good manners are required at all time. No personal attacks or "flames."
> - Complete your Yahoo profile.
> - Before posting a question, search the message archives and the various
resources on the homepage.
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