Question about HP LaserJet 4 plus Printer

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Grey lines on printout

My HP Laserjet 4+ prints with grey lines. What is the problem?

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Re: Grey lines on printout

I am using an HP LaserJet 4 and there is a little brush attached to the left side of the printer. I used that to clean the little "teeth" mechanism behind the sponge roller. I also cleaned the sponge roller and got rid of the gray lines for now.

Posted on May 16, 2008

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Re: Grey lines on printout

90% chance its the Cartridge or 10 % chance its the fuser

Posted on Nov 27, 2007

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1. If you are printing using postscript driver, try using PCL6 - printout would be darker for grey scaled items.

2. Print in lower resolution 600dpi or 300dpi, printouts would be darker.

3. Try printing all characters as black

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