Question about HP LaserJet 3050 All-In-One Printer

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Black lines on printed material

I recently replaced the ink cartridge and all of my copies have the same black lines across the page in the same place. (3) placed in middle of sheet. Any ideas?

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  • Paul schanzer May 11, 2010

    is this with scanning or from pc? The problem started only after the print cartridge was replaced?

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Check the optics section the remove the exposure glass anh clean the fisrt,second, and third mirror

Posted on Feb 16, 2009

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The problem you are experiencing is caused by the way the text is formatted in most word processing documents. By default envelopes are printed not in black, but a dark gray. This confuses the printer and causes it to use the color cartridge to process gray instead of using the black cartridge. You can fix this problem with one of 2 ways.
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