6. Image Quality Problem: Spots
Spots
Black Spots (Granular Toner Clotting)
Paper is stained with toner spots of 0.5–1 mm (0.02–0.04 inches) in diameter.
Cause:
This is caused by toner slipping through the cleaning web and adhering to the paper.
Occurrence conditions:
• Duplex printing
• Printing on uncoated (especially rough-textured) paper
• Halftone printing
• Printing after halftone printing
• Printing after printing on many small-size sheets
Solution:
1. If the paper is not registered as custom paper, register the brand of the paper.
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