Canon Pixma TR4722 won't print yellow

[HannaMo]

I have a the TR4722 printer that is less than 3 month old, which functioned beautifully --- until it did not. The images remained sharp, but it quit printing full color.

I have --

•  run the nozzle check
•  cleaned the nozzles
•  deep-cleaned the nozzles
• run the head alignment 
• roller cleaning
• bottom plate cleaning
• changed the color cartridge
• run all the diagnostics, alignment, and cleaning twice more

without changing anything.

I do use the correct Canon ink cartridges.

I am pasting a sample of the print test page after nozzle cleaning below. My resulting print page (both before and after all my attempts) shows exactly what is below EXCEPT where I have drawn the red arrow is BLANK.

My Black is printing fine and aligned, the Cyan and Magenta are printing fine -- both in dark and light, my pale Yellow line is fine, but my rich Yellow line (where I have drawn the red arrow) is blank because my printer will no longer print Yellow in color copies.

 

How do I solve this?

[DerrickL]

The nozzle check indicates a faulty color cartridge. The printhead is on the cartridge.

[HannaMo]

I can see why you might say that; however, the printer was working perfectly with a Canon color cartridge in it. Then the printer quit printing yellow,  and the nozzle check indicated as I described.  And a new Canon color cartridge  failed to print yellow, and the nozzle check indicated the same lack-of-yellow fault. Therefore, it seems difficult to believe that a working (and full) color cartridge would have a fault yellow nozzle AND THAT the new replacement color cartridge would have exactly the same nozzle fault at yellow.

Ideas?

[DerrickL]

Did you print a nozzle check that shows no dark yellow at all? It is on the image you posted so I assumed you printed one without any dark yellow at some point? A missing color usually indicates a clogged or bad print head and the print head is on the cartridge, which usually indicates a problem with that cartridge when print head cleaning fails.  I had a similar issue with my MG3620, printing cyan, the dark printed but not the light, I cleaned it, deep cleaned it, and it still did not print. I replaced the cartridge and it did not improve, the third cartridge worked. I can only assume that if it is not the cartridge, the printer cartridge chip reader or some other component has failed and it does not see the yellow any longer. 

[HannaMo]

Thank you so much for your answer AND thoroughness.

The image that I posted was an online image indicating what is supposed to be there. My sheets come out exactly correct EXCEPT THAT the dark yellow area (indicated by my drawn red arrow) is blank.

The nozzle report has printed exactly that way (dark yellow missing) before I changed the color cartridge and after.

I do hear you about you encountering two different bad cartridges and having to go to a third. Wow!

However, since my PALE yellow prints correctly, is that the nozzle? Does a print cartridge have TWO nozzles per color? (One for pale and a different for dark?)

Given that my pale yellow works fine, are you still leaning to a bad cartridge nozzle?

TYIA

[DerrickL]

The actual print head on a cartridge has many nozzles far more than just the colors you see on a nozzle check. Notice the black on the check? each dot color or black is made by a separate nozzle, up to 1200 of them. That is why a clogged nozzle or nozzles may make blank spaces in one of the colors, not the whole color missing. If the whole color is gone it is usually caused by a failure of the cartridge to release any ink at all from that section of the cartridge.