Function Of Each Part - Toshiba e-STUDIO 160 Service Manual

12.4 Function of Each Part

(1) Magnetic roller
Magnetic roller is made of aluminum, with magnets positioned inside it. By using the magnetic force,
the developer material is attracted (because the carrier is made of iron powder), forming magnetic
lines of force shaped like a brush. Further, magnets are secured, and only the sleeves around mag-
netic roller rotate. Through this rotation, the magnetic brush of the magnetic roller sweeps the surface
of the photosensitive drum, enabling development.
(2) Doctor
The doctor makes the thickness of the toner layer on the magnetic roller surface as specified to allow
toner to pass between the magnetic roller and the drum.
(3) Agitator
The agitator supplies toner in the developer unit to the magnetic roller.
(4) Auger
The auger delivers the toner supplied from the toner kit to the developer unit.
(5) Toner empty sensor
The toner empty sensor detects the presence or absence of toner in the developer unit.
(6) Toner cartridge auger
The toner cartridge auger supplies toner in the toner cartridge to the developer unit. If the absence of
toner in the developer unit is detected by the toner sensor, the toner cartridge motor operates for a
fixed time. This allows the toner cartridge auger to turn and toner to be added to the developer unit
from the toner cartridge.
December 2002 TOSHIBA TEC 12 - 5 e-STUDIO160/200/250 DEVELOPER SECTION