Color blue not printing - Canon PIXMA MX860 All-In-One InkJet Printer

Perform the head cleaner mantenace menu and feed roller cleaner then make a test print.

bip your print head in hot water for about 5 to 10 seconds. put it back into the printer without drying it. start printing immediately.

Did you remove all the blue ink from the cartridge? It is possible that there is still a small amount left. Just keep on printing until the blue ink runs out and the black ink will replace it.

when the color cartridge has to make black, it uses all three colors. printing blue indicates that the color cart. is getting low on red and yellow. get a new black cart. and a new color, 'cause it' s coming due.

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Just make sure the right colors are in the right place, photo magenta is not interchangeable regular magenta. Also run the nozzle check to make sure all colors print, if after 2 deep clean cycles you don't have all colors you may need a new printhead.

Possibly it is running low on Blue ink - because colors are usually a mixture of inks - for example green is made from blue and yellow - if an ink runs low it will print the available colors or substitute the next available color.Probably if it prints green yellow - then it has no blue available to make the right shade.

Try cleaning mode on the printer, secondly a single color on a print or two or thre with one color noticeably absent means that that cfartridge is close on or is empty. EG Red Blue Yellow most of print is Ok but at end of print only blue seen means RED AND yellow are empty and only blue has some ink left. Replace ALL cartridges so your prints and paper arent wasted .

the red color contains the blue and magenta colors so your problem is not printing blue insted of red , your red laser miror is dirty from inside you should open the back of the printer then open the laser scaner then clean it then replace it

I think your cartridge is defective, you need to replace a new cartridge.

Clean the printer heads until it does print the blue. Instructions in manual .

http://www.usa.canon.com/consumer/controller?act=ModelInfoAct&tabact=DownloadDetailTabAct&fcategoryid=334&modelid=9722