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HP82143A Repair - Paper Advance and Round O-rings
08-31-2021, 11:29 AM
Post: #1
HP82143A Repair - Paper Advance and Round O-rings
Hello,

I would like to share my experience with repairing the paper advance rollers for my HP82143A thermal printer. Thanks to some members I was informed a good replacement for the rubber rollers on the paper advance mechanism for this printer, which were square profile o-rings. Unfortunately they seem to be non existent here in Brazil so I ended up using round profile ones. I've installed two on each side of the shaft and then put a tiny amount of glue on the o-ring edges. Attached is a picture of how it looked like.

So far I tested the printer with original HP thermal paper as well as a new roll of thermal paper that is used for credit card machines. I used all 25m of it with no issues so far.

Best regards.


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Cesar Basso
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09-05-2021, 06:49 PM
Post: #2
RE: HP82143A Repair - Paper Advance and Round O-rings
Excellent repair, thanks for the input.

Geoff
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09-06-2021, 01:28 AM
Post: #3
RE: HP82143A Repair - Paper Advance and Round O-rings
hmm, i wonder if they could be printed from tpu
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09-07-2021, 04:13 AM
Post: #4
RE: HP82143A Repair - Paper Advance and Round O-rings
There was someone on TAS that sells square o-rings for 65/67/97 card reader rebuilds. I think those worked when I tried although they were a bit tight. I’ve also used shrinkwrap tubing and silicone rubber tubing, I think. It’s been a while. The trickiest part is ensuring both sides are both the same size.
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