MP780 - New print head and new ink. If I run the nozzle check the BCI-3 section at the top is not there. The BCI-6 color sections are there just fine. If I copy a black and white document I get a blank sheet of paper. If I copy a color document, I get the colors printed, but any thing that is black is very faint or missing. If I print a black and white document from the computer I get a blank sheet of paper. If I print a color document from the computer I get the color, but the black is not there. Scanning and faxing both work.
Sounds to me your print head is plugged up. This is not usual though because the majority of people use black ink much more. So, in your printer utility, do a deep cleaning. If that does not work, there is a thing called a purge unit in it. This is a usual way of draining waste ink to a pad that soaks it up. if the hose, or other parts are clogged, it backs the ink up and causes the print head to clog. If this is the start of it, do not waste your ink cleaning, and try not to let it sit too long. Contact canon, and let them kno what you think it is.
also, if you want to try a new printhead, go here:
http://cgi.ebay.com/Canon-Printhead-Prin...
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The black print head is clogged up. I cannot print or copy any black & white documents. Colour printing is Ok but black colours are less prominent
ZH
Same problem.
AHHH!!!! HELP!?
I am unable to print from Excel or Word. I get colored printing but not black. I am able to print black copy from the internet.
D
tops or middle section of lines printing are blank
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