news@sun.uucp (news) (12/31/88)
One great problem for me with my LaserJet+ is the tendency of the output
paper to curl upwards at the top and bottom a few minutes after it
leaves the printer. This can cause real problems when you try to
photocopy larger laser printed documents.
Is this all printers, or only Canon engine ones, or only LaserJets?
What methods have people used to combat this situation? Are
some particular kinds of paper better? Thicker or thinner? I have tried
the paper upside down and rightside up. I have tried removing it from the
tray to cool upside-down, which helps a bit. I have taken my documents
and pressed them under heavy weights for a day, and this also helps.
Any other notes? (I don't know about manual fed paper, which would avoid
the curving paper path, but this isn't really a viable alternative. The
paper curls the opposite way from the way that it was bent coming out of
the tray, anyway.)
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with a subject line of helpjchester@phoenix.Princeton.EDU (Henry S. Horn) (01/01/89)
You could try short grain paper instead of the long grain that it sounds
as if you are using. (The paper fibers are laid oriented with the short
edges of the paper instead of the long ones, so the fibers themselves
won't get bent going through your laser printer. Long grain works better
for most high speed copiers, which move the paper along "sideways.")
Though they cost more, you could experiment with some of the papers
marketed for laser printers.
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with a subject line of helpanderson@vms.macc.wisc.edu (Jess Anderson, MACC) (01/01/89)
I use a LaserWriter II (NTX, but I assume NT's the same in this regard). One thing we make in it is masters that will be mass reproduced in a Xerox 9500 or similar copier. For a while we used plain copier paper in the laser printers, but the curling was a problem, and the image was a bit mushy (absorbency, I supposed). Then we tried a paper made for laser printing, Hammermill Laser-Plus. We got very little curling (not zero, but *much* better) and a *much* shaper image, plus better contrast (it has optical whiteners, I think) and more even toner distribution (blacker blacks in large areas). So I thought we had that one licked and we bought about 10 cases. *Then* we found out that its smoothness and thinness (though it was 20 lb substance) was misfeeding in the Xerox machines, and this problem we could not eliminate even with adjusting the press. At the moment, we are sacrificing the obviously improved quality to avoid increasing production costs by a large factor. We're using up the Hammermill Laser Plus by using it for work prints, program listings, and the like. If someone has gone this route and found a better solution, I love to hear about it. ==Jess Anderson===Academic Computing Center=====Univ. Wisconsin-Madison===== | Work: Rm. 2160, 1210 West Dayton St., Madison WI 53706, Ph. 608/263-6988 | | Home: 2838 Stevens St., 53705, 608/238-4833 BITNET: anderson@wiscmacc | ==ARPA: anderson@macc.wisc.edu========UUCP:{}!uwvax!macc.wisc.edu!anderson== ---------------------------------------- Submissions to: desktop@plaid.sun.com Administrivia to: desktop-request@plaid.sun.com UUCP: {amdahl,decwrl,hplabs}!sun!plaid!desktop{-request} Archives can be gotten from the archive-server. To get information on the archive-server, send mail to: archive-server@plaid.sun.com -or- sun!plaid!archive-server with a subject line of help