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

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I can't print ordinary black text any more

The black text was acting strangely - every other line, roughly, was wavy, smudged. I've replaced the cartridge, but now there's absolutely nothing happening at all. When I do a maintenance check, the coloured bars aqre fine, but there is no grid of fine black lines.

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  • Anonymous Dec 05, 2008

    I have the same problem. My PIXMA MP780 won't print black text anymore despite deep cleanings and print head alignments.

  • Anonymous Dec 05, 2008

    Mine doesn't print in black anymore. How do I clean the head?

  • Anonymous Dec 07, 2008

    every other black line doesn't print correctly even after dozens of cleanings?

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In fact, I ran a couple more ordinary cleaning sequences with a new cartridge in place, and it prints normally now. The only anomaly is that the ink-level panel still shows the 3eBK as being half-full (which is the level it showed when I discarded the previous cartridge).

Posted on Dec 06, 2008

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