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OT: printer cartridge replacement reality

I think the engineering/customer friendly response would be, "OK, so we'll put a big, flashing red light on the thing that says "Consumables past expected life -- Print quality may suffer!" Unless it's a question of safety, a well-designed device should always make a best effort to keep on functioning, even if it knows the results won't be within the usual specs.

The 'scope manufacturers have started talking about doing things like having an "enhanced accuracy" light or display that appears when all self-tests have passed, "certified" accessories are used (i.e., those made by the scope manufacturer, so they really do know their characteristics), etc. If everything isn't just right, the idea is that, while the 'scope still works, you can't complain back to the manufacturer that you used some no-name 1GHz probe and the fact that you're seeing, say, 1ns rise times must imply that the 'scope is broken.

---Joel

Reply to
Joel Kolstad
Loading thread data ...

among the

on the HP

put in the

insertions and

what to do to

one of the

the ink

over the hole.

peels off

no problems so

2 minutes

when the

overfills and runs

color of ink.

buy a new one

The seal has to be essentially perfect or the ink will leak down into the printer (I had that happen and it's a mess). The first time you use a screw you MAY get a good enough seal, but when you remove it for the next refill and put it back, you probably won't. And you almost certainly won't the 4th, 5th, etc., time you remove it and put it back. Also, the hole you have to make is considerably larger than just the size of a hypodermic needle.

Glue is the way to go, and in particular silicone RTV. If you use a solvent based glue, it may actually bond to the cartridge plastic well enough that you can't get it off. The RTV doesn't stick very well, but well enough; sort of like Othello didn't. It gives a perfect seal regardless of imperfections in the drilled hole (which can be very small), and doesn't apply mechanical force to the hole which might crack the plastic after repeated insertions of a plug or screw.

Reply to
The Phantom

Of course not. That's why I am trying to determine whether any such thing is TRUE.

A lot of people here are in "believe rumor first, whine, never ask questions" mode.

Reply to
mc

I've got a super-cheap ($89 at Sam's Club) HP PSC 1200, and there are two files in c:\\ that apparently get updated at every print. One is hpfr3425.log, 251k, that gets added to with each print - has filename and some binary data. The other is hpfr3420.xml and currently has this content:

hp psc 1200 series

MY32GB60MQ5H

1180 9389578 2825426 2324699 2869679 0 0 0 743485

For all I know, the software could easily send this data to HP and/or use it to eventually say "Sorry, your printer[/scanner/copier] has reached the end of its design lifetime. Please toss it and go buy a new HP printer." But I really don't know what, if anything, is done with this data, and I'm loathe to edit up the numbers to find out.

-----

formatting link

Reply to
Ben Bradley

What happens if someone uses the same printer on several computers? That could really screw things up.

--
Link to my "Computers for disabled Veterans" project website deleted
after threats were telephoned to my church.

Michael A. Terrell
Central Florida
Reply to
Michael A. Terrell

Since that case concerned Static Control Components of Sanford, NC and LEXMARK, the hits you get will be tangential at best. Try this:

formatting link

A month late to the thread and referencing a case where HP wasn't a party. D'oh.

Reply to
JeffM

Google on "HP DMCA Static Control" and get an eyeful...

-- A host is a host from coast to snipped-for-privacy@nrk.com & no one will talk to a host that's close........[v].(301) 56-LINUX Unless the host (that isn't close).........................pob 1433 is busy, hung or dead....................................20915-1433

Reply to
David Lesher

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