Black ink not printing. Will print a page fine that has color on it. If just black text on a page it is very light and sometimes skips every 3rd or 4th line

Take out cartridge put in a sandwich baggie and shake it; then re-install

I have problem with my canon IR 2420 DISPLAYING E000007-0000
WHAT CAN BE APROBLEM

it seems that the print head is clogged try printing the nozzle check if ok change the black cartiage .

You need to change the color settings of the printer to print using color and black ink. Refer to printer help.

Canon printers do not like non Canon inks. Maybe other printers have similar issues but it seems that Canon is particularly finnicky.

Change the black ink cartridge.

Perhaps the CMY color heads need alignment. If you have not already done so, run a head alignment from the driver maintenance section. It will print out a page containing several lines and text, and request you select the closest-aligned images. After this is done, do another image print to check for improvements.
Normally, the printer uses the black cartridge for text and the CMY inks for images (even for black on photo and specialty paper). So when you are printing normal text pages on plain paper, only the black ink is used. A good check for this would be to print a normal text page, but select photo paper in the driver to trick the printer into using the CMY inks to make a substitute black text page. If this looks ok, then you are having issues other than cartridge alignment.

replace the black print cartridge. I guess that the text is B&W. Pictures are printed in color - from the color ink cartridge.

black cartriges bad

If you try the print head alignment or head cleaning wizard under the maintenance tab, they may help!