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I have noticed that there is an incosistancy in printing colors for my printer. It mainly shows up in the black color. I ran a contanmiation check and I noticced that there is a pattern to how the incosistency prints. It is more like diagonal lines. I am placing links to the pictures becuase I can only post them in line.
This streaking pattern does appear for all of the other colors but it is most prominent for the black. And it is the same pattern. The first link is a picture for the contamination check for the black ink. The second is a test for all 4 colors.
I ma not sure what I can do. I took a soft cloth and cleaned the heads and the laser. I also used the function UI refresh, Toner refresh on the black, and clean developer. Still the issues persists. Any help would be greatly appreciated: