My MG7720 printed perfectly on CDs and DVDs up until a couple weeks ago, when streaks started appearing anytime I printed black text onto a disc, like the ink is simply missing in certain spots. The streaks are usually in the same place on different prints. When I print a full color image on a disc, sometimes the print will look okay at the top of the disc, but certain colors will disappear further down the disc. Sometimes the entire disc is printed with a specific color (or colors) missing completely. As of right now, when I print simple black text on a disc, it's all there, but very, very light, like there is only a very small amount of ink being applied to the disc. The issues occur on multiple brands of inkjet printable discs. The brand of disc does not seem to make a difference. I am not seeing any of these issues when I print onto paper. Paper prints look exactly like they are supposed to, with no streaks and no missing colors.
The cartridges all have ink and are working fine. I have tried several cleaning cycles, an automatic head alignment, a manual head alignment, and I have removed and reseated the print head. I also checked the encoder strip and it does not appear to need cleaning. At the moment, I have no idea what else I can try to fix this, if anything.
Here's a disc with simple black text. The text is very, very light, but should be dark black.
And here is a full-color print. The black ink just stops halfway down the disc. And the colors on the top half are not correct.
The colors on the disc above should be similar to the colors on the paper insert below, which was printed on the same printer, just before I printed the disc image.
