Dirty Spots/Lines In Background And Main Image Areas - Ricoh B051 Service Manual

Tech Service Bulletin No. B051/B052 – 014 REISSUE

DIRTY SPOTS/LINES IN BACKGROUND AND MAIN IMAGE AREAS:

SYMPTOM:
Dirty spots [A] or lines [B] in background and main image areas.
NOTE: This does not occur on all toner colors, and is more visible in background areas than in main
image areas.
CAUSE:
Insufficient toner charging inside the development unit causes some of the toner to be more easily attracted
to the OPC surface.
SOLUTION:
Production Countermeasure:
The same bias that is applied to the Doctor Roller and Toner Supply Roller is now applied to the entrance
seal bracket as well, in order to ensure a uniform charge across all three components (from Aug 2003
production).
Field Countermeasure:
Refer to this TSB, i.e. turn the Development Roller in the reverse direction and clean the roller surface with a
dry cloth.
CÓPIA NÃO CONTROLADA
CÓPIA NÃO CONTROLADA
A
B
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