2-4 Phaser 6300/6350/6360 Color Laser Printer Service Manual
Theory of Operation
a. The toner and the carrier are moved by the two Augers in the
Developer Assembly.
b. As carrier reaches point A, it’s deposited into the carrier chute.
c. The carrier is then transported toward the Imaging Unit by the nozzle
mounted on the Developer Frame Assembly.
d. The carrier collected in the Imaging Unit is leveled by another Auger
that deposits the carrier at the center of the reservoir.
4. Primary Transfer (drum --> IDT1): The toner image formed on the
individual drum surface is transferred onto the surface of the IDT1
(Intermediate Drum Transfer 1: intermediate transfer roller 1). There are
two IDT1’s: one for yellow and magenta and one for cyan and black. IDT1
is conductive and receives a high positive charge from the HVPS. The
negatively charged toner image on the drum surface is attracted by the
high positive potential and transfers to IDT1. During this transfer, the
remaining negative charge on the drum is neutralized by the high positive
charge on IDT1.
5. Secondary Transfer (IDT1 --> IDT2): The toner images formed on both
IDT1 surfaces are then transferred onto the surface of IDT 2 to create a
complete, 4-color toner image. IDT2 is biased at a higher positive
potential than IDT1 thus attracting the toner image and transferring it from
IDT1 to IDT2.
6. Cleaning: The IDT1 cleaner consists of a conductive roller brush rotating
in contact with IDT1 after the point where the toner is transferred to IDT2.
The cleaner receives a high positive voltage from the HVPS allowing it to
electrically attract any toner particles remaining on IDT1. Toner remaining
on both IDT1’s after the image transfer to IDT2 is temporarily stored in the
IDT1 cleaners.
7. Tertiary Transfer: The finished toner image on IDT2 is transferred onto
the print media using the biasing charges supplied by the Transfer Roller.
The conductive Transfer Roller receives a high positive voltage from the
HVPS that puts it at a higher potential than IDT2. Since the Transfer
Roller is located behind the print media, the 4-color toner image is
attracted to the high potential and transfers to the surface of the print
media.
s6360-386
A
Imaging Unit
Nozzle
Developer