Remove the fuser – back door comes off, little blue clips, pull it out – rotate using the green knob, and you might be able to remove something stuck in it gently. Run 3 or 4 cleaning pages – in the menu, configure device, print quality menu, create/process cleaning page. Try swapping the toner with another to test – borrow one if you can. Grab a non-abrasive and damp towel or cloth, then carefully wipe the toner. If it is a smudged dirty, streaky mark continuously down the page, you might have a dirty fuser – it may have been picking up toner, and it has built up and then put it back down on the paper.Ī thin, defined black line might be a scratched drum or developer – the laser might be refracting and drawing the defect onto the drum.īlank or white lines could be something stopping the toner from getting to the paper – transfer roller under the toner might have something stuck on it.Ī repeated mark or defect could also be a dirty fuser – glue or wax from envelopes and labels could do this. First, turn off the printer, then remove the toner cartridge from the printer. Lines down the page can be caused by a few things – depending on what the line looks like. HP LaserJet printers power businesses around the globe with the printing speed, performance, and reliability you need. Since you didn’t mention which exact model you’ve of HP Laserjet printer, I am going to give you a general solution that works with most of them:
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