Color Bands, Rgbk Dither - Xerox ColorQube 8570 Service Manual

Color Bands, RGBK Dither

The large, secondary colored areas in this print reveal banding and weak jets.
Look for: Vertical "bars" or "bands" of much lighter color or a different hue running in-line in
one or more of the solid fills.
Causes: A weak jet can cause banding; see the Weak/Missing Jets test print. Use Service
Diagnostics to ensure that the printhead and drum thermals are correct. Follow the instructions
on the Printhead Troubleshooting Checklist.
Figure 5 Color Bans
Figure 1 Red Dither Figure 2 Green Dither
Figure 4 Black Dither
Figure 3 Blue Dither
Image Quality Revised, 3rd Revision - Xerox Internal Use Only
October 2012
Color Bands, RGBK Dither
3-32 ColorQube 8570/8870 Service Manual