Printing Process - Toshiba DP1200 Service Manual

Digital plain paper copier
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(3) Conditions of occurrence of paper misfeed
a. When the power is turned on:
PPD or POD is ON when the power is turned on.
b. Copy operation
1) PPD1 does not turn off within 4 sec
a. PPD1 jam
after turning on the resist roller.
1) PPD2 is off immediately after turning on
b. PPD2 jam
the resist roller.
2) PPD2 does not turn off within 1.2 sec
after turning off the resist roller.
1) POD does not turn on within 2.9 sec
c. POD jam
after turning on the resist roller.
2) POD does not turn off within 1.5 sec
2.7 sec after turning off PPD2.

6. Printing process

(1) Functional diagram
(Basic operation cycle)
Cleaning blade
To face
Paper release
down tray
An OPC drum is used for the photoconductor.
(Structure of the OPC drum layers)
Main charger
Laser beam
MG roller
Main high voltage unit
Saw tooth
Cleaning
Waste toner box
Fusing
Separation
Heat roller
Electrode
Heater lamp
OPC layer
(20microns thick)
Pigment layer
(0.2 to 0.3 microns thick)
Aluminium drum
Cleaning blade
Drum
Transfer unit
Resist roller
Semiconductor laser
Focus correction lens
Exposure
Charge
Drum
Transfer
Transfer charger
paper feed
Transfer high
voltage unit
7
7
DP1200/1500
Toner
Developing
Developer
PS roller
Synchronization
Manual feed
with drum
Cassette
Print process
Paper transport route

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