Cleaning/Toner Recycle Unit; Composition; Mechanisms - Minolta Di551 Service Manual

CLEANING/TONER RECYCLE UNIT

[1] Composition

1. Cleaning blade
2. Cleaning/toner recycle section
3. Toner recycle MC (MC14)
4. Toner guide roller (TGR)
5. Cleaning blade

[2] Mechanisms

Mechanism
Drum cleaning Cleaning blade
Toner collection *1 Toner guide roller (TGR)
Toner recycle *2 Screw conveyance + Toner
recycle MC (MC14)
*1 Toner collection
Toner removed by the cleaning blade is collected
by the toner guide roller (TGR) and removed by
the scraper, then conveyed by the toner convey-
ance screw to be reused. High pressure is
applied to the toner guide roller (TGR) to
enhance the toner cleaning ability.
*2 Toner recycle
When the drum performs preliminary rotation as
warm-up, toner recycle MC (MC14) is turned
OFF, stopping the drive force from the toner con-
veyance screw. This prevents excessive recy-
cled toner from being conveyed to the developing
unit.
1
2
3
Method
2-I-1
CLEANING/TONER RECYCLE UNIT
4
9
8
7
6. Drum
7. Separation claw
8. Toner conveyance screw
9. Scraper
HV Terminal
Toner guide roller (TGR)
5
6
Cleaning blade