Question about HP DeskJet 812c InkJet Printer

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Printer won't stop printing garbage

HP Deskjet 812C will not stop printing random letters and symbols. I have tried cancelling all print jobs and that does not work.

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  • jaqjaq Jan 05, 2009

    I too have this problem. And I know what it causes it. Anytime you interfere physically with the printing process, the HP 812C goes haywire. Anything that is in the printing buffer becomes garbage, filled with a lot of page breaks, I mean a lot. Canceling the print job doesn't help. Pulling the damn plug doesn't help. You just have to keep feeding paper to the damn thing until all the garbage is out of its buffer. Sometimes can take twenty or thirty minutes and a lot of paper. Not to mention using all that ink. It is a huge waste of resources. Never been able to find a way to clear the buffer. Good luck...they are tempermental creatures.

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I had the same problem. I fixed it by using an elevated command prompt to clear the print queue, turned off the printer, removed all the paper from the printer, restarted the printer, at this point let it try to print - it discovers it is out of paper and cancels the print job, clearing the buffer. I paper back in the printer and pushed the paper button - it printed out one line of random characters, and then resumed normal operations.

Posted on Mar 16, 2009

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I had the same problem hooking my old HP Deskjet 812C to a computer running Windows XP with a parallel printer cable. I tried changing the cable to a new printer cable and the printer was immediately detected and installed on reboot. I think my old printer cable might not have been bi-directional.

Posted on Feb 27, 2009

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Try and re-install your printer drivers...first remove the drivers and delete the printer...then re-install.

Posted on Dec 03, 2008

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