Cleaning/Toner Recycle Unit; Composition; Mechanisms - Konica Minolta 7155 Service Manual

CLEANING/TONER RECYCLE UNIT

[1] Composition

[2] Mechanisms

Mechanism
Drum cleaning Cleaning blade
Toner collection *1 Toner guide roller (TGR)
Toner recycle 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.
Cleaning blade
Cleaning/toner recycle section
Toner recycle MC (MC14)
Toner conveyance screw
Method
2-I-1
CLEANING/TONER RECYCLE UNIT
Toner guide roller (TGR)
Cleaning blade
Scraper
Separation
claw
HV Terminal
Toner guide roller (TGR)
Drum
Cleaning blade