Question about HP Deskjet 840 InkJet Printer

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How to elliminate streaks while printing

I have been using HP840c printer for pretty long time. Recently I found on my print outs at two places i get horizontal white streaks which mars the nice printout. It happens in colour as well as black prints.I did clean the steel rollers and internals for dirt /dust but still they appear. Could someone tell me the solution for this?

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Hi shubhada,

It seems scaling marks on encoder strip/round encoder may not be readable or damage at particular place, that may result in such problem

Posted on Mar 21, 2008

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  • 45 Answers

Hi shubhada,

It seems to me that your print driver has become corrupt. You will need to reinstall it to restore it to it's previous functional state.
Since you need to reinstall the driver, I suggest;

  1. downloading the latest driver for the HP 840c at http://h10025.www1.hp.com/ewfrf/wc/softwareCategory?product=59868&lc=en&cc=us&dlc=en&submit.y=0&submit.x=0&lang=en&cc=us (you'll have to select your operating system then download the HP Deskjet Full Feature software/driver file)
  2. Uninstall your printer by deleting it in Printer and Faxes
  3. Reinstall your printer using the new driver
Hope this information helps you in solving the printer problem
Kind regards and thanks for using the FixYa service

Posted on Mar 17, 2008

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Posted on Jan 02, 2017

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