Question about HP LaserJet 4 plus Printer

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Replaced toner is printing very light.

I replaced my toner in Jan. and ever since then, the printing is as light as the old one. I have taken it out and shaken it but there is no difference.

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  • gullenj Mar 03, 2009

    Similar problem with lighter print, but not all docs. PDF files and emails thru hotmail are very faint. I replaced the transfer roller - not much difference. Settings: RET=Dark and set to level 5 for Density. Tried switching to various drivers since there are many with LaserJet 4, 4 plus, 4/m, PS etc. with no change. Test print page is strong and black thru out. A month or so ago I came across a fix, I thought it was on this site, that suggested and I downloaded a patch related to PDFs. Old tech printer not understanding new tech PDFs, etc. ?? Anyway, I didn't know how to implement the add on. I tried it as a driver file w/out success and have since lost the file and the link. Any help would be greatly appreciated.

  • John LeFebvre May 11, 2010

    Also if it is not a genuine toner it could produce bad results. You get what you pay for is true more often that not.

    I take it none of the settings on the printer have changed, like turning on Economy mode?

  • sdtech May 11, 2010

    2 things - 1 maybe a bad toner - these are old printers and sometime the toner has been around for a long time. 2 the fuser could be getting weak - replace fuser - check the page count with the selftest menu and see how many pages it has printed - if around 100,000 try a new fuser


1 Answer

If the print quality is the same as the old one - light laser is dirty and/or transfer roller. Fuser would NEVER cause light copies -but rather, dark, smudgy copies

Posted on Mar 01, 2009

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