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97 printer paper not advancing - Printable Version

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97 printer paper not advancing - Keith Beyer - 06-30-2010

Hi, I've looked at the articles to repair the 97 printer gear, but my problem is that the paper is not advancing. The pinter prints fine, but the paper does not, or barely advances. Does anyone have a solution for this?


Re: 97 printer paper not advancing - Vieira, Luiz C. (Brazil) - 06-30-2010


In the HP41 peripheral printer (82143A) there are two small springs in each edge of the clutch axis that ensure enough pressure is provided to pull the paper as the clutch rotates. Can you check if the HP97 also has them and, if so, if they are correctly placed?


Luiz (Brazil)

Edited: 30 June 2010, 11:01 p.m.

Re: 97 printer paper not advancing - Ignazio Cara (Italy) - 07-01-2010

Hello Keith,
I can suggest my procedure for fix this problem, but you must know that will require to take apart all the printer assembly. If you aren't skill enough, I can fix your printer if you send it to me.
BTW I live in Italy! If it's not a problem for you...

Take care


Re: 97 printer paper not advancing - Keith Beyer - 07-05-2010

Hi Ignazio,

Thanks for the offer. I did find some more postings in the archive. It appears all advance wheels are turning, but the rollers just don't grab the paper. So I will try one of the fixes I saw very carefully using sand paper to "roughen" the surface of the rollers.

Thanks again, but I think sending the calc to Italy would be a bit much for me.

Re: 97 printer paper not advancing - Klaus - 07-06-2010

I don't know the condition of your rollers, but one some of my calcs, the rollers, which should have a circumference shaped like a circle have a flat spot on them. Sandpaper helps a bit, but still produces uneven paper advance. I think you still have to rebuild the rollers.

Re: 97 printer paper not advancing - Keith Beyer - 07-06-2010


Thanks for the posts. I followed the procedure I found in Archive 15:


Basically, I cut a narrow (about 3 mm) and long (a few inches) piece of 600 grit sandpaper. I fed it through with the grit facing the roller (grit toward the front of the calc) and pressed the paper advance as I alternately held the tail of the piece of sandpaper and released it. This way it would scrape the roller and advance alternately. It took multiple passes on each roller, but now the paper is advancing as it should!

Thanks to those who posted and thanks to the original posts in the archive - and the Museum for maintaining the archive to begin with!!