[ILUG] Recomend a printer ? (OT: DeskJet Autopsy)
ronan at cunniffe.net
Thu Jan 24 22:02:01 GMT 2002
Quoting Justin MacCarthy <macarthy at iol.ie>:
> I would recommend HP up to a point (I've had a Deskjet540 and 640c). They
> seem to play nice with Linux- but they seem to develop a problem with the
> papar feeder after a while, i.e. to has problem pulling in the sheets. I'm
> not sure if this is due to the machine, the paper I'm using or the surface
> the deskjets sitting on(don't know if its level) Anyone else have this
> problem ?
If you mean that it just kicks them out rather than pulling them in, all that's
happening is the movement lifting the paper up to the roller is too violent and
the top page goes airborne and slides down the slope (only a little, but
enough). Solved by keeping a finger pressed against the trailing edge.
My DJ600 died by starting to make "I'm-trying-to-break-some-internal-part"
noises and refusing to feed the page, calling it a paper jam. So I took the
thing apart to find out what was going on.
There's two "wings" that fold in over the paper tray to separate the latest
sheet from previous, normally folded in because of gravity, then lifted aside by
some mysterious force to drop the sheet onto the others.
The mysterious force turns out to be a FLBOP (Fiddly Little Bit Of Plastic),
located at the extreme left of the print engine, sliding left and right with a
travel of about 1 cm, and completely unpowered, free to be wiggled around by
Except, as suggested by the patterns of mechanical wear, and proved by a trial
run, it would be hit by the print head moved to the extreme left. You no longer
need to guess where the print head of a DJ600 is during a paper feed. Not only
that, but it has to be 'picked up' again by the printhead on the way back, like
it's edge triggered. Except the tolerances are tiny, and the bump meant to pick
up the carriage on the return stroke wears away, and then FLBOP is left in the
wrong place, and when the printing mechanism tries to switch to printing mode,
there's a load clack and a paper jam error.
This is a ghastly piece of design, using the print carriage to headbutt things
into the right place! Whatever happened to "every tool should do one job and do
One thing makes it worse. It chose (as usual) the worst time to die, and we had
to get a new printer straight away. Another HP, only because I hadn't
discovered the above at the time.
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