Extra lines print across my entire document - Canon PIXMA MP530 All-In-One InkJet Printer

I would replace the Magenta drum unit & developer unit

Try running the printers "clean head" function, or try cleaning the head on the cartridge with a q-tip and rubbing alcohol.

If this doesnt help you may need to replace the entire cartridge.

A line down the copy can come from a dirty document scanner lens.
Usually white out or wet ink will smudge on the document scanner. Opening the document cover check the scanner for a dirty glass. Some document feeders have the white roller on top of the small glass window. They have delicate plastice retainers that hold the roller on both ends. Extra care needs to be taken if this roller is removed.
Clean the roller and the glass with wet towel. Shine a flashlight on the glass to see if there are anymore black marks on it.
Use the finger-nail to run across the glass and make sure no debris is on it. Even a spot can make a line on the copy.
Also, a bad fuser roll can cause a black line on the copy. A defective drum unit can cause a line on the copy as well.
If all else fails place a Xerox service call for this problem.

Try to change the toner or clean it with cleaning of roller.

Have a real good cleanup of the ink that was (presumably) leaking from the old black cartridge. Remove the cartridges from the cartridge carrier and use kitchen paper towel to soak up any ink in the bottom. Give the cartridge outlet holes a dab on the towel as well. Replace the cartridges promptly.

Turn the printer on, and as soon as the print head moves, pull the power cord out of the back. You should now be able to (carefully) move the print head by hand. Place a layer of paper towel on the printer track, and move the print head across it to mop up any surplus ink. Move the print head across to the left out of the way and use kitchen towel to mop up surplus ink in the Print Head parking area.

Now turn the printer on and carry out a cleaning cycle (right click the little printer icon in the bottom right corner of the screen and select clean). Now run a nozzle check (right click the little printer icon in the bottom right corner of the screen and select nozzle check). Are there any extra black lines in evidence now? If so, try another 1 or 2 cleaning cycles and nozzle check. Black lines gone now?

If you still have the black lines, come back with a new comment.

If this information is useful to you, please rate it.

When I print darker color images I get what I call Zebra stripes across the picture on a slant about 1/2 inch apart. Changed the toner and the drums are at 45% capacity. Any suggestions. Thank you.

A solid line sounds like a jet (in the print head) always on. Replace the print head (<$50 on eBay).

A white line (no ink) sounds like a clogged print head or a burned out jet. Replacing the print head will fix either one. If it is clogged, you might be able to clean it but this procedure is complex (soaking or special cleaners). Read about cleaning in other posts.

pls check cartridge and clean it then checked

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Change toner cartridges again