Question about Canon PIXMA MP780 All-In-One InkJet Printer
The print-head is like a paint-brush -- brush sideways across a white-coloured wall, and you should get a wide "band" of paint. If only half of the paint-brush has paint on it, then only half of that "band" on the wall will get painted, leaving a horizontal strip of white showing through.
So, launch the Canon software that is installed on your computer, and run a few "print-head-cleaning" cycles, to unclog those ink-jets that are _NOT_ shooting the ink onto the paper.
Posted on May 20, 2011
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Posted on Jan 02, 2017
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