LaserJet 4M wavy edges, is there a remedy?

  • Thread starter Thread starter mike anderson
  • Start date Start date
He said it did:

"To me, the edges appear more
bent than wavy and it appear regardless of from where I choose to
print: multipurpose tray, paper cassette or lower cassette. "
Click to expand...

As I recall, the Laserjet 4 family could send a sheet out the back as
well as the top tray. If my memory is accurate, send a few sheets out
the back and see what happens.
 
As I recall, the Laserjet 4 family could send a sheet out the back as
well as the top tray. If my memory is accurate, send a few sheets out
the back and see what happens.
Click to expand...

No, 'fraid not on the 4, 4+, 4M or 4M+. Three different paper sources
but it always comes out of the top! There is a rear cover but opening it
stops the printer.
 
Bob, you seem to know a little about printers. You're probably a HP
trained "parts changer". You can get the paper to come out the back by
opening the rear door and defeating the door interlock. I checked out
Mike's post over at fixyouownprinter and he seemed to be getting a lot
more helpful advice over there than he was getting on this ng.
 
Bob, you seem to know a little about printers. You're probably a HP
trained "parts changer". You can get the paper to come out the back by
opening the rear door and defeating the door interlock. I checked out
Mike's post over at fixyouownprinter and he seemed to be getting a lot
more helpful advice over there than he was getting on this ng.
Click to expand...

Actually, we've been communicating privately.
 
So you're a toner cartridge expert as well, Bob. Having been inside
thousands of toner cartridges, I CAN speak from experience. It has
exactly 6 moving parts. The drum, charge transfer roller, developer
roller and the 3 gears driving the 3 rollers. I wouldn't exactly call
that a large number of replaceable parts. Actually, the only
replaceable parts are the wiper blade, the drum, CTR and the developer
roller. Now let's get down to the cartridge causing these "waves".
Since you claim to be the "printer guru", explain to me how a flat
sheet of paper passing between the cold drum and CTR can get waves
imparted to it. After you get done with that, then you can explain to
me how the waves get through the heat and pressure of the fuser without
getting flattened and wrinkled. Please do enlighten me as of course I
have no idea how the LJ4 operates. I'd also be interested in your
explanation of how the fuser imparts vertical waves in the paper. Oh,
while we're at it, please explain the function of the CTR. Parts
changers blame a large variety of problems on it as they do toner
cartridges. If you are really a tech as you claim, you'd know what it
does in the printer.
Here's the website of another person who fancies himself a tech. He
gives advice on 4 forums that I know of. He'd probably fool a lot of
people on this ng as well. http://www.angelfire.com/tv2/woods/
 
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