2.Image Quality Problems
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2. Image Quality Problems
Toner Spotting/Staining
Paper Spotted with Toner
Paper has toner spots of 0.5–1 mm (0.02–0.04 inches) in diameter.
Cause:
Toner fragments have slipped through the cleaning web (which cleans the pressure roller) re-adhered to
the paper.
This may occur when:
ï‚· Printing on both sides of paper
ï‚· Printing on uncoated (especially rough-textured) paper
ï‚· Printing a single-dot halftone image
ï‚· To adjust the following settings, register beforehand the type of paper that you are using
Solution:
Increasing the temperature when using thin paper with a thickness equivalent to Paper Weight 0 or 1
may cause paper curling, resulting in paper jams at the fusing unit.
1. Raise the temperature by 5°C in Fusing Heat Roller Temperature Adj in Advanced Settings for the
custom paper in use.
2. Print the image. Is the problem resolved?
3. Raise the temperature an additional 5 °C in Fusing Heat Roller Temperature Adj.
4. Print the image. Is the problem resolved?
5. Have changes to the settings resulted in glossy lines or paper misfeed?