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02-23-2009 12:08 PM - edited 02-23-2009 12:08 PM
I've got a user with an HP L7780 All-in-One device who is having problems with printout quality. When printing graphics, there are almost always horiziontal white and/or dark lines throught the images. If the page is printed in landscape mode, the lines are vertical.
I have run the print quality report and performed the steps suggested based on the printouts. I have run the Clean Printheads and Calibrate Linefeed tools numerous times, yet the lines still appear in all printed images.
What's my next step?