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

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The tank 3eBK black do not print

It is a new tank, correctly installed. It won't print any black colour

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  • 142 Answers

Olofossonbygg,
Looks to me like an air lock in the system.

Have you just changed the black cartridge because of an error message and did it print up to the point where you just changed it?
Just replacing the cartridge with a new on can sometimes lead to an air lock in the small ink feed system.
Does your cartridge have the writing head at the bottom or is it just an ink tank, in which case it could defiantly be an air lock.
Try a cleaning cycle, and leave the printer for a few hours to stand and let the air lock escape naturally. Running loads of cleaning cycles will use a lot of ink, so don't be too hasty.

Posted on Sep 27, 2009

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If you haven't done so, I would try another new cartridge. It is entirely possible (and occurs frequently) that you got a bad cartridge. Assuming you removed the tape from the cartridge before putting it in, this is generally indicative of either a bad cartridge, bad print head, or that heads or ink tanks may need cleaning.

The Canon support page for this printer is at:
http://www.usa.canon.com/consumer/controller?act=ModelInfoAct&tabact=SupportDetailTabAct&fcategoryid=238&modelid=10444

However, as Canon pages come up as generic pages (without the text I input for you), you will have to type in "missing black ink" (without quotes), to see the material they have posted in this regard. You will find instructions there in regard to how to clean the print heads, etc., if that is necessary. However, I would definitely try another cartridge first, especially if you haven't had that much use on the printer, such that you think these other measures may be necessary.

Please post back if you need further help, otherwise thanks for rating FixYa!

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That's a BCI-3eBK cartridge. Most Canon inkjet problems can be resolved by replacing the print head. eBay is the best place to find a replacement.

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