First, please print a Nozzle check following the steps on this page:
Once printed, please compare it to the example on this page:
Does the Nozzle check that you printed match the example on that page?
I am having the same issue. When I run a nozzle check, it only prints the portion for Black. Not only do I not get any color patterns, I don't get the lines for the color at all.
I hope this is clear. At the top of the page, it prints | BK | and then there is the grid pattern. Nothing else appears except for the page totals. There are no rows for Cyan, Magenta, and Yellow.
Have you ever been able to print correctly with your PIXMA G7020? If not, please let us know this.
If you have been printing correctly, please make sure that all of the inks are at least half full and perform an ink flush:
1. Please press the wrench and screwdriver button on your PIXMA G7020 one time
2. Press the right arrow 4 times to select Maintenance and press OK
3. Press the right arrow 7 times to select Ink Flush and press OK
4. Press OK on All Colors
5. Press OK again
6. Select Yes and press OK
7. Select Yes and press OK again
The ink flush will commence and will take about 8 minutes to complete.
Once the ink flush is complete, please print another nozzle check.