What is the smart chip in a laser printer cartridge?

micky,

No. I don't think it even tells the computer if has no paper.

:-) I think it does.

I think it doesn't. And I have a better view than you do.

Well, lets put it this way: I'm *almost* certain that the printer at liest
*tries* to tell the computer its outof paper (next to signalling a more
general kind of problem/error), but its quite possible that that signal is
not handled by the computer.

I'm not sure what "very" old means but this one doesn't.

That *very* old means as in the beginning of home computers, even before the
x86 PC (and most likely even before that). In other words, easily 30 years
or so.

Having said that, I have little-to-no knowledge what the currently connected
(USB, networked, WiFi, etc) printers communicate, as that is only limited by
the printer and its driver, not by the physical connection.

Regards,
Rudy Wieser


-- Origional message:
micky schreef in berichtnieuws
...
In microsoft.public.windowsxp.general, on Sun, 9 Aug 2015 13:03:18
+0200, "R.Wieser" wrote:

Micky,

And if you leave the door open, the machine won't work.
Maybe that's to thwart conitinuous ink.

Its more likely that having the door closed means a) the cartridges are
seated correctly and b) nothing is in the way of the mechanisms (they can
move freely)

Well, there are other messages about the indidividual cartridges. For
example, if I've taken out the yellow, it ask if I have replaced the
yellow. I don't know if it means replaced it with itself or with a new
one, so I'm not sure what to answer, but I say Yes.

OTOH, if someone wanted to avoid the door open message, to have
continuous ink, he could burn a hole in the door with a soldering iron.
I would do that even if the printer permitted the door to be open,
because it would annoy me to have the door open all the time.

No. I don't think it even tells the computer if has no paper.

:-) I think it does.

I think it doesn't. And I have a better view than you do.

Even the *very* old ASCII-only printers did send
that status back to the computer by *a dedicated wire* on the old-school
printer connector (25-pin D-connector: pin 22).

I'm not sure what "very" old means but this one doesn't.


In your honor I looked at the manual again and it was interesting.

There is a DCU, a code reader/tool that is used for troubleshooting. and
to use it one has to take off a front cover and a side cover, and then
connect it.

I think the problem being troubleshot here is NO IMAGE. The steps are
Is the connection of OPC GND and Frame Ground correct? (less than 10%)
If Yes,
Developing (-350V) and supplying (-550V) voltage are OK?
If Yes,
Does the counter indicate over the toner's guarranty life?
If Yes,,
Replace the toner cartridge

So there is a counter. But it's not available to the user.

But for LIGHT IMAGE,
Is it not over the guaranty life of dot counter?
If no, replace the developer
If yes Is the toner save mode or the light mode is selected?

Why not check that first!! It's a light on the top of the printer.

I have light image. That's why I'm planning to buy a new toner
cartridge, but I think I'll read the instructions here first. Hmmm.
The flow chart doesn't list Replace Toner anywhere. It does have
Replace the Developer (which I think includes the toner) and it has
Replace the High Voltage section. And Replace the LSU.



Anyhow, the counter is under the cover panel or that is, the CDU
connector is under the cover panel.