Canon PIXMA MP780 All-In-One InkJet Printer "black ink across printed photos" Questions

page with black ink and not printing text properly. Just the top and the bottom of the words. I think you have to clean the print head.and if cleaning doesn't help you may have to get a new print head

...black ink lines on prints. They go along or across prints from 1/8 to 1/4" long. I have changed both ink cartriges. Do I need to clean something or take it in to be repaired? You need to clean it ...

...ink on ip4200. Black will not print on test page "horizontal box", other colors print. Any suggestion on why the black won't print? Thanks. The ink tank requires air to flow through it ...

black ink tanks 1x bci 6bk and 1x bci3ebk bci3e used for printing text with the printer and bci 6 used when printing pics or grayscale prints. i would say the bci3e print head is faulty on the printer

...black, one of the colour inks may have a block or be low, go into printer settings menu and check what print quality its set for. Hi - I have the exact same issue. I do not have mine set on draft and ...

...black ink tank in, it printed some documents fine for a while then the next day it would not print black text.i have done the deep head cleaning process a few times, i have uninstalled the driver and ...

...black/grey foam material fall out of the inards of the unit. is this important? The foam goes across under the printhead and is only there to catch the excess ink when you print a borderless photo. ...

Black and other colors print normally. I have performed all the cleaning and alignment operations with no change in the print output. Changing the cyan ink tank did not help either. tthanks about that

...black cartridge functioning. Deep cleaned all heads. Second nozzle check confirmed all were cartridges working properly. Printer now prints with green and red bars across photos. Did a print head ...

...black lines going across the printed area. Can anyone advise on this? It doesn't seem like the print heads could be dirty yet, but I've never printed before. Thank you in advance. Go to the settings ...