The Museum of HP Calculators

HP Forum Archive 20

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Cleaning HP-97 Print Head
Message #1 Posted by Fouad M. Kaadou on 24 Sept 2011, 10:25 a.m.

Hello,

I need to clean my HP-97 print head, but I have no idea how to get to it and with what to clean it with. Any ideas?

Thanks in advance,

Fouad

      
Re: Cleaning HP-97 Print Head
Message #2 Posted by Michael de Estrada on 24 Sept 2011, 10:31 a.m.,
in response to message #1 by Fouad M. Kaadou

You can run a red cleaning card through to do a reasonably good job unless it is badly gummed up. The card is abrasive and will wear a small amount of material off the head, so you want to use it sparingly. Direct access to the head itself requires complete disassembly of the card reader.

            
Re: Cleaning HP-97 Print Head
Message #3 Posted by Fouad M. Kaadou on 24 Sept 2011, 11:40 a.m.,
in response to message #2 by Michael de Estrada

Michael,

I am talking about the printer head not the card reader. Thanks anyway for looking.

Regards,

Fouad

                  
Re: Cleaning HP-97 Print Head
Message #4 Posted by Olivier De Smet on 24 Sept 2011, 12:26 p.m.,
in response to message #3 by Fouad M. Kaadou

I had the same problem of bad printing with my HP97, it was solved by buying actual thermal paper (black). The old paper wasn't working good for printing and for advancing too.

HP97 use normal 57mm wide thermal paper.

Olivier

                        
Re: Cleaning HP-97 Print Head
Message #5 Posted by Fouad M. Kaadou on 24 Sept 2011, 1:24 p.m.,
in response to message #4 by Olivier De Smet

I tried the same paper on my hp 82143a printer and works great. I also read on the museum that using black thermal paper on an HP97 wears out the print head.

-Fouad


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