Question about Canon PIXMA MP780 All-In-One InkJet Printer
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.
Tips for a great answer:
Mar 17, 2014 | Hewlett Packard Printing & Imaging HP...
ink reservoir doesnt have to be completely empty to fail. Replace the
cartridges. Some of the jets or all of them may be clogged especially if you
have not used your printer in a while. If there are cleaning instructions in
the manual clean the jets and then try to print from the printer's self test
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