Digital BW, The Print

I have a theory that the ink clumps up (congeals, flocculates, or some 
such thing) and then the clumps hang around in the system, occasionally 
lodging in the jets. I once unwisely let my 1280 sit for too long 
without printing, then discovered that ink had totally congealed in one 
of the tubes. I tried roto-rootering it out, then replaced the 
carts+tubes+ink; eventually I got it working again, but for quite a 
long time afterward would get the occasional clog. So if the ink-supply 
system is new, and head is clean, and it's printing well and then 
suddenly it clogs, it stands to reason that there are clumps floating 
around, perhaps behind the head or in the cart-feed nozzles, that find 
their way to the nozzles.

Harry

On Apr 15, 2004, at 11:26 PM, Peter A. Klein wrote:

> I regret to report that I'm still having clog troubles with my 1280.
> I've tried the Windex tricks via both the printhead's resting pad and
> flushing through the head with a syringe.  I ran a color cartridge
> through the printer, printing both color, B&W with color ink, and
> black only.  That worked OK with the usual cast and metamerism
> problems when using color ink for B&W.
>
> I bought MIS cleaning fluid, soaked the pad, let it sit overnight.
> Didn't help.  I put in MIS cleaning cartridges, printed several purge
> patterns, left it sitting turned off for a day. Repeated the next
> day.  Put fresh MIS Ultratone and Eboni carts back in.  Got a few
> beautiful prints.
>
> Two days later, I have clogs again.  In several of the color
> positions.  Most of these clogs seem to move around from nozzle check
> to nozzle check, but the "yellow" position clog that started this
> whole saga is still there, as always.
>
> I'm about ready to give up on this printer.  It seems to do OK with
> Epson color inks, although a couple of the yellow nozzles never show
> up in the nozzle checks.  With the MIS VM and Ultratone inks, clogs
> keep happenning.  When it works, the results are exquisite.  But I
> have wasted countless weekends and several cartridges of expensive
> ink, to no avail.
>
> My next question is this:  Is it worth it to get the 1280 fixed, or
> should I just cut my losses and get another printer?  If the latter,
> I'm open to advice on which printer to get.  I want to be able to do
> good, smooth, consistent B&W printing.  I don't want to spend all my
> time screwing around with clogs.  I love the results I get from UT
> inks, but it's starting to seem like it's not worth all the trouble.
>
> Thanks for any advice,
> --Peter
>
>
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