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

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Color copy not accurate from pixma mp780 it comes out yellowish

I've tried everything. Replaced all ink cartridges, used ink cartridges made just for cleaning. Im using Printpal ink, do you think that matters. I 've also checked all my set ups -set color adjustment to auto, Ran all the appropriate Maintenance requirements.

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I would try using a set of OEM cartridges. Make sure to run deep nozzle cleaning and alignment.
Some aftermarket cartridges are not as well quality controlled and tend to be inconsistent and gum up the nozzles.
If you need a source for good aftermarket cartridges try LD Products online.

Posted on May 11, 2009

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Canon Pixma MP780. Recently my color ink


Have you checked to see if the jet area on the bottom of the ink cartridge has a blackish sludge on them? It might be that the area that the print cartridges are purged/cleaned to one side of the printer (sometimes called a service station, or spitoon) has built up excess ink that has gotten thick and high enough that as the carriage goes over that area the bottom of the cartridge gets polluted with the blackish sludge. It will work slightly into the jets where the ink comes out and cause discoloration, even after you change the color cartridge. Open the unit to look inside with a flashlight for build ups and clean it (if you find some) with disposable things like cotton swabs, coffee stirrers, whatever you have that wont damage anything inside. Another cause could be mixing of the cyan and magenta and yellow somehow inside making a dark color representing black - but replacing the cartridge would cure it immediately.

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I haven't used my canon pixma for a few weeks, came to use it again and the 3e black cartridge won't work, (tried printing from computer and copying) have done a clean, deep clean and nozzle check, even...


The black print head is clogged. The reason why the black is clogged and not the photo black or any colors is that the black is pigment ink and the photo black and colors are dye based ink. The pigment ink is a particulate formulation that binds up when water is evaporated out of the ink. You need to buy a new print head the fix the problem. You can buy a new print head for $75 from precision roller.com.

Mar 18, 2010 | Canon PIXMA MP780 All-In-One InkJet...

1 Answer

Canon Pixma mp780 printer will not print colors


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

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Canon Pixma MP380 Copying problems


what happens when you make a copy from the glass (bot the doc feeder), or a print..
if this happens only when using the Doc Feed.
Look at the Slit_Glass, if there is drit on it, clean it, and try again?
Could also be the ink is leaking in the machine? clean the ink cartridges and where the Ink Cartridges are inserted.

Oct 27, 2008 | Canon PIXMA MP780 All-In-One InkJet...

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You can clean the head from the printer software or take it out and run some warm water over the ink ports/ink jets.

Are the ink tanks securely clicked in place? they can come loose easily

Jun 03, 2008 | Canon PIXMA MP780 All-In-One InkJet...

1 Answer

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Try uninstalling/reinstalling the drivers.

Is the error light flashing?

From the printer utility can you print a nozzle check sheet or align the printhead?

Does it seem to be printing (feeding sheet and moving printhead) or nothing happening at all?

Try removing all the tanks, take out the head. If blocked try cleaning manualy by running warm water over the ink ports/printhead jets - dry off and reinstall.

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Toner


when they say TONER , its refering to the INK CARTRIDGES , Color & black ,
CANON PIXMA MP780 & MP750 uses the same INK CARTRIDGES :
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please rate this solution , hope this helps

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sometimes those measures of ink levels are not very accurate. actually they're usually rather far off... try a new cartridge Usually the easiest solution.

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