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

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My Pixma MP 780 is printing sporadically, i.e. it prints one or two lines, misses a few, prints one or two more, misses a few etc. I recently replaced an ink cartridge and the problem has been visible since then. Any ideas?

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Hi! Only one thing can cause this. Please run head cleaning to get rid of the missing lines. This should be done every cartridge change. Hope this helps and thank you for using FixYa!

Posted on Aug 20, 2010

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My printer won't print? it has full ink cartridges.How do i fix it?


Maybe your cartridges are not out of ink. Try it with another game cartridge kit...

Apr 30, 2012 | Canon PIXMA MP780 All-In-One InkJet...

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CANON PIXMA MP 780 WILL NOT PRINT FAX. ALL INK CART. HAVE BEEN CHANGED. HELP!


Do you have a dedicated telephone line or is it a shared line with answering machine or telephone? Were you able to receive and print faxes at one time or have you never been able to print a fax? Are there any error messages or error lights?

If you are not getting error codes it sounds like a basic set-up and configuration problem. Make sure the telephone line is connected properly

See here. Also suggest referring to pages 35 and 43 of the Quick Start Guide

You may also want to check to see if you have the most current driver for your operating system. drivers and software are available here.

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Jan 15, 2011 | Canon PIXMA MP780 All-In-One InkJet...

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Jun 06, 2010 | Canon PIXMA MP780 All-In-One InkJet...

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Won't print black ink text; looks like faint watermark print; ran all maintenance check several times (nozzle checks, etc)


Remove the black cartridge and soak it with an alcohol free window cleaner soaked paper towel let it sit on the towel for a good thirty minutes then wipe clean and put back in printer run nozzle check if necessary.

Oct 09, 2009 | Canon PIXMA MP780 All-In-One InkJet...

1 Answer

How do I change the H Value, A O on my Canon Pixma MP 780


Those values can only be changed after printing the alignment page either via the computer or by the keypad on the machine. On the machine they are set with the up/down arrows, but only after printing the alignment page.

Sep 24, 2009 | Canon PIXMA MP780 All-In-One InkJet...

1 Answer

Prints every other line


Use the cleaning cycle first.If it completes do a nozzle check and then to align follow below.
You need to hook it up to computer to do a manual head align through the printer properties maintenance section.

Jun 19, 2009 | Canon PIXMA MP780 All-In-One InkJet...

1 Answer

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Are you using Windows?
If so clean out your temporary files and defrag the drive.
Printers in Windows spool the job to a temporary file and then retrieves it.If the temp folder is full or the drive is fragmented this will cause your issue.

Jun 13, 2009 | Canon PIXMA MP780 All-In-One InkJet...

1 Answer

Won't print black ink 3E


I got a paper jam while printing.Know my brother mfc-290 will not print black

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1 Answer

MP 780 DOESN'T PRINT


Try printing something in a colored font, like red or green and see what happens. This printer uses two black ink cartridges. It uses the larger one for black text printing. If it is dry, blocked, or damaged, your text (usually black) will not print. Changing to a color font will rule that out.

Good luck.

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