Drum Unit; Composition; Mechanisms - Minolta Di850 Service Manual

DRUM UNIT

[1] Composition

Cleaning/toner
recycle unit
Cleaning/toner recycle unit

[2] Mechanisms

Mechanism
Carriage support
PCL/TSL
*1 Auxiliary separation
*2 Conveyance assistance
The drum unit is an integral assembly consisting of a
drum, charging corona unit, developing unit, cleaning/
toner recycle unit, PCL, and separation claws.
*1 Auxiliary separation
• To prevent paper jamming, three separation
claws are used to separate paper from the
drum forcibly. These separation claws are
pressed against the drum or detached from it
by turning ON/OFF the separation claw sole-
noid (SD4).
• To prevent a specific part of image copied
paper from being stained and to prevent the
drum from being scratched, the swing mecha-
Charging corona unit
Developing unit
Charging corona unit
PCL
TSL
Method
Fixed rail
LED
Separation claws
Ratchet wheel
2-E-1
Separation claw solenoid (SD4)
Developing unit
Transfer and separation corona unit
nism slides the separation claws about 5 mm
back and forth in parallel with the drum sur-
face.
Separation claw solenoid (SD4)
Separation claw
*2 Conveyance assistance
The thick paper conveyance ability has been
improved by the use of ratchets.
DRUM UNIT
Separation claws