Re: HP-97 printer Message #3 Posted by David Smith on 1 Apr 2003, 5:59 p.m., in response to message #1 by Michel Beaulieu
If cleaning the drive rollers does not help there are a few other things to try:
1) Try using a substance called Rubber ReNue (sp?) from MG chemicals. It contains methyl salicylate which softens rubber and makes it sticky. Similar products are sold for use on slot car tires. Keep it off the plastic parts... it will melt them. It helps to use the printer regularly... otherwise the feed cam will harden up and develop flat spots again.
2) With a lot of fiddly work and great care you can remove the feed cam (hint: you first have to remove the print head) and then gently sand the flat spots off the rollers. Then roll the cam rollers back and forth across coarse sandpaper (like 80 grit). Keep sideways tenstion on the cam so that the clutch teeth are kept apart. Clean the rollers with alcohol and/or Rubber Renue.
3) Replace the cam with one from an 82143A printer. Same fiddly mechanical work as above times two... be evry careful reinstalling the head... it can be cracked very easily if it is not seated properly when you tighten the screws.
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