Question about Canon PIXMA MP780 All-In-One InkJet Printer

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Won't print black ink, 3ebk

Black ink cartridge, 3eBK, doesn't print test pattern nor does it print anymore. Tried new canon cartridge, cleaning, deep cleaning. Tried head alignment, but not sure if done correctly. Tried auto head align on printer menu. After it started a few black and blue square boxes were printed on a sheet of paper and only got message,"Head Align Failed." Help!

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You most likely have a faulty print head there on the black cartridge, try cleaning the contacts and check your warranty status for repairs.

Posted on Nov 29, 2008

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1 Answer

Hi, our black 3ebk will not print. we have deep


Check if there is a tape over the top vent intended to let air into the ink tank and so ink can flow out to the writing head.

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Replacing the printhead may work, but it could be a problem with the cleaning assembly. Take out the 3ebk and run a cleaning, if the ink goes away on the pad where the ink cart. goes, then clean assy. is OK, and you need a new printhead.

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Ok what you need to do is make sure that the ink cartridge is properly inserted all the way. If it's not then you won't be able to print out black ink at all.

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Hi,

I had a similar problem. Pages in blue, but nozzle check in black. Tried what you tried. Changed the ink ($). Still no change. Then tried the maintenance option to clean the bottom plate. And now it is working. Go figure.

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Is this a new problem, or has it always been like this?

Could it be that the print driver is always printing photo? In that case, it uses the narrow black ink cartridge instead of the fat 3eBK cart. You should print a nozzle check pattern and verify that you see the 3eBK cartridge pattern. If you do, the problem is likely SOFTWARE... your driver settings, not the printer itself.

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If you haven't done so, I would try another new cartridge. It is entirely possible (and occurs frequently) that you got a bad cartridge. Assuming you removed the tape from the cartridge before putting it in, this is generally indicative of either a bad cartridge, bad print head, or that heads or ink tanks may need cleaning.

The Canon support page for this printer is at:
http://www.usa.canon.com/consumer/controller?act=ModelInfoAct&tabact=SupportDetailTabAct&fcategoryid=238&modelid=10444

However, as Canon pages come up as generic pages (without the text I input for you), you will have to type in "missing black ink" (without quotes), to see the material they have posted in this regard. You will find instructions there in regard to how to clean the print heads, etc., if that is necessary. However, I would definitely try another cartridge first, especially if you haven't had that much use on the printer, such that you think these other measures may be necessary.

Please post back if you need further help, otherwise thanks for rating FixYa!

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1 Answer

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Try replacing your printer ink cartridges with a new one.Chances are you have bought a defective cartridge. If that does not work, pls try to check the slot for your black ink for obstructions, then replace your black ink cartridge.

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