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

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Canon pixma mp780

Printer is not copying or printing but everything else seems fine. what is going on?  I've cleaned the heads - the color and black ink in fine on the test pages.  Thanks for some info.  It may  be cheaper to replace than purchase a new print cartridge.  Any suggestions.

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Try uninstalling/reinstalling the drivers.

Is the error light flashing?

From the printer utility can you print a nozzle check sheet or align the printhead?

Does it seem to be printing (feeding sheet and moving printhead) or nothing happening at all?

Try removing all the tanks, take out the head. If blocked try cleaning manualy by running warm water over the ink ports/printhead jets - dry off and reinstall.

Posted on Jun 05, 2008

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Sounds to me your print head is plugged up. This is not usual though because the majority of people use black ink much more. So, in your printer utility, do a deep cleaning. If that does not work, there is a thing called a purge unit in it. This is a usual way of draining waste ink to a pad that soaks it up. if the hose, or other parts are clogged, it backs the ink up and causes the print head to clog. If this is the start of it, do not waste your ink cleaning, and try not to let it sit too long. Contact canon, and let them kno what you think it is.

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