Digital BW, The Print

Most likely you have a yellow ink starvation problem (as you 
probably have guessed because the banding is only in the yellow and 
thus not a paper advance/stepping motor problem).  The nozzle check 
doesn't use much ink, so starvation problems don't show up unless 
they are significant.  Starvation problems are usually caused by a 
partial clog in the printhead or an air leak or some other problem 
with the cart.  

To conserve your other inks, you can create a 100% yellow test image 
and print it to see if the banding changes during printing (ie, gets 
worse with longer printing time or not).

The other thing to try is to change out the yellow cart.

Good luck. 

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "pairofsnowmen" 
<s.bulger@...> wrote:
>
> I have had the printer for about 6 months and am using the Epson K3
> inks. The problem started about a month ago, but since I print
> primarily B&W, and when I do print color, not all of them are
> affected. Specifically what I mean is that every time I run a head
> cleaning, the test afterwards prints beautifully except for the
> yellow. I have run several cleanings and although the condition
> improves, it has not disappeared. Any time I make a print that has 
any
> significant amount of yellow in it, I get a very faint banding. It 
can
>  be seen with the naked eye, although not easily, and maybe not 
even
> if you weren't looking for it.
> 
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Jeff Randall"
> <jrandall@> wrote:
> >
> > OEM carts and ink or third party?
> > 
> > How long have you had the printer and when did the problem start?
> > 
> > Specifically what do you mean when you say you can never get a 
good 
> > test?  Exactly what is wrong.  Under what circumstances do you 
see the 
> > banding?  Do you see it easily with the naked eye or do you need 
a 
> > loupe?
> > 
> > 
> > -----In 
DigitalBlackandWhiteThePrint@yahoogroups.com, "pairofsnowmen" 
> > <s.bulger@> wrote:
> > >
> > > I seem to be having trouble with my yellow on my R2400. No 
matter how
> > > many head cleanings I do, I can never get a good test from my 
yellow.
> > > Is there any way to actually manually clean this print head?
> > > Everything else prints fine, but anything with yellow in it 
gives me
> > > very slight banding. Thanks for the help.
> > >
> >
>