Digital BW, The Print

No, Martin - this is very visible without a loupe - it's particularly
visible in midtones and highlights, but runs  throughout the image.  I
printed the purge pattern with both Epson and Piezo drivers, at
highest resolution, then printed a portrait with Peizo at best
quality.  Nozzle checks and alignments are now looking good.
in frustration - Chris Mende
-- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Martin Wesley"
<mwesley250@e...> wrote:
> ----- Original Message ----- 
> From: "Chris Mende" <chrismendefoto@n...>
> To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Sent: Wednesday, May 21, 2003 11:02 PM
> Subject: [Digital BW] Addendum to Banding with new CIS
> 
> 
> > I just looked at a purgefile I printed with the 10x loupe and lo and
> > behold, the banding does NOT have "white lines" but a variable black
> > level that looks like a "rag rug"pattern.  Is this a problem with the
> > feed mechanism?
> 
> Chris,
> 
> If you are printing the purge file with default Epson driver
settings at 360
> dpi with the quality setting on low you will always see banding.
Make sure
> you use a higher resolution, heavy weight matte paper setting and high
> quality if you want to use this to evaluate your output.
> 
> This part of your problem sounds like what has been called "dark
banding" or
> "corduroy banding". This seems to be an artifact of inkjet printing
and is
> parallel to the path of the print head. It should not be visible
without a
> loupe and should only appear in smooth tonal areas of a specific range.
> Where is shows up is image and inkset dependent to some extend. Put
away the
> loupe. If you can't see it under normal viewing conditions ignore it
or you
> will drive yourself crazy.
> 
> >  It looks as if it truly has nothing to do with the
> > new CIS - I'm just looking closer now.  Also, the dropped white lines
> > I had mentioned are only in the first (upper) digits of the alignment
> > pattern, too, not the second,lower digits.(the "1" of "13" for
> > instance). Odd.
> 
> If you are dropping dots then there is still a partial clog or air
bubble in
> the head and you should continue to try the standard remedies.
> 
> > Looks as if I have a printer servicing coming up.  Any suggestions as
> > to where to go?  I'm in San Francisco.
> 
> Some people have had some luck with repair people being able to
clear out
> tough clogs. Don't know anyone in the Bay Area.
> 
> Martin