Possible black cartridge issue?

[The Hat]

I love it when I have these kinds of issues...

If your willing to learn more then, next time you print a big M or any letter for that matter, leave your print to dry for a few minutes and then put it back through the printer once more for an even greater black finish, just keep an eye on your registration...

 

[Dean]

Printer: Canon Pro-100, PC Inks.
I was printing out 12 large characters yesterday in black on 13x19 Canon Photo Paper Plus Semi-gloss. The first 11 were perfect. The 12th one started to develop banding about half way through (see image below). I've done a nozzle check, deep clean and still have similar problems on other images. View attachment 6010 View attachment 6009 I created this chart of solid colors. Middle image is the screen. There is slight banding on the purple area and the black section is not black. The black section on the B&W image also is not black. Any suggestions as to what I can try to fix this?

Yeh Windex is actually quite good. Although everyone warns against the use of Ammonia it is very effective at breaking the dried ink down.