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

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Printing - Black ink not filling in completely

Printing, just in black, is not complete.  Blank stripes running through the lettering.  Have done tests, cleaned heads, test print looks fine.  But then when I go to print the document, it has slashes of missing black.  Color seems fine.
Have been using the same type of cartridges for some time.  Changed out to a new one.  No difference.  Cleaned the holes with a bit of alcohol.  Seemed to help, then regressed.

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Re: Printing - Black ink not filling in completely

Does the test page come out good or the same?

Posted on Nov 12, 2007

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Black ink will not print

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