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Chapter 6 Principles of Operation
6 – 8
1.3.4 Trickle
The carrier suffers deterioration in electrostatic characteristics due to surface contamination by toner or
scratches by agitation.
In order to maintain electrostatic characteristics, a slight amount of carrier is mixed with the toner in the
toner cartridge.
While the toner and the carrier are supplied to the Developer Assembly when the toner is dispensed,
the deteriorated carrier in the Developer Assembly is collected to a separate chamber in the IMAGING
DRUM.
This is called "trickle development method". The trickle development is enabled by the rotation of
the Auger in the Developer Assembly.
Described below is the mechanism of trickle development.
1) The toner and the carrier are agitated in the arrow's direction by the two Augers in the Developer
Assembly.
2) A portion of the carrier that reached the section A of the AUGER DEVE REAR is carried to and
dropped from the carrier chute.
3) The dropped carrier is carried toward the IMAGING DRUM by the NOZZLE mounted on
DEVELOPER FRAME.
4) The carrier collected to the box in the IMAGING DRUM is carried by the Auger therein to the center
area of the box.
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2)
A
3)
4)
1)
IMAGING DRUM
NOZZLE
Developer Assembly