Two G6020s have been requiring ink flushing...

[mproteau]

I own two G6020 printers. The first one I bought back in 2021. The second, in late 2022. Just recently BOTH printers stopped printing one of the colors. An ink flush is required to get things going again. However, I only got about 2 pages of printout from one of the printers before it stopped printing cyan again.

"Do an ink flush" can't be sustainable - eventually the reservoir will be full and the printer just won't work. Are there other solutions, like tools for forcing or drawing ink through the tubes?

[mproteau]

To have a look around, I opened the print head locking cover - I wanted to make sure it was seated well and that the joint buttons were down correctly. I noticed some ink moved around in the tubes when I had opened it. After closing it and pressing the joint buttons down, I tried a simple CMYK test print (four squares of solid cyan, magenta, yellow and black) and it printed great. Optimistic, I tried reprinting a recent image. It started fine, but about 30% through, I'm back to printing mostly pink. I tried my CMYK image again, and the cyan is striped.

Is there a way to easily see if there's a clog in the line? Or perhaps a loose connection somewhere? Don't know if it's related to the ink, but it's also been very slow to print. The job starts up fine, but it prints one line and feeds the page a little, then waits a second. Then prints one line and feeds the page a little, then waits a second.

[mferdinand]

Regarding the ink flushing of a g6020, do you know where the flushed ink goes?  Maintenance Cartridge or absorbent material of some sort?   I'm trying to determine what I need to expect if I have an overflow situation due to ink flushing.

[diesel]

Canon says the only way to fix the air in the lines is to do an ink flush which uses a lot of ink and at some point will give you an error code that the ink pad is full and will stop printing. Once you find a way to remove the air from the lines (Youtube) and printing is normal go to notepad and create (4) landscape orientation rectangles, approximately 10.5 long x 1.25" high, then fill the rectangles with red, yellow, blue, and black colors. I then print this about every one to two weeks (set a day like Sunday). It doesn't use near as much ink as an ink flush nor will it fill up your waste pad and keeps everything full of ink. I have not had to do an ink flush since I started using this method. I hope this helps solve your problem. Canon needs to update their Mega tank printers to eliminate the ink flush solution to correct the problem on these printers.

[diesel]

I have had the same problems with air getting in the ink lines regardless of what I do. You can find ways to remove the air an reprime the printheads on Youtube. I was able to get all of the air out and found a way to keep it out so far. Canon says the only way to get it out is to do an ink flush which uses a lot of ink and at some point will give you an error code that the ink pad is full and will stop printing. Once you find a way to remove the air from the lines and printing is normal go to notepad and create (4) landscape orientation rectangles, approximately 10.5 long x 1.25" high, then fill the rectangles with red, yellow, blue, and black colors. I then print this about every one to two weeks (set a day like Sunday). It doesn't use near as much ink as an ink flush nor will it fill up your waste pad and keeps everything full of ink. I have not had to do an ink flush since I started using this method. I hope this helps solve your problem. Canon needs to update their Mega tank printers to eliminate the ink flush solution to correct the problem on these printers.