Read Sharp AL-840 (serv.man3) Service Manual online
(2) Image forming process diagram
The operation of this section are composed of the six processes:
charging, exposure, development, transfer, separation, and discharg-
ing. An OPC drum is used as the photocoductor drum. Toner is of
one-component. For charging, the rotation brush is used. For trans-
fer, the roller is used and virtually no generation of ozone. It is also
compact. The high voltage required in this section is provided by the
high voltage power PWB.
charging, exposure, development, transfer, separation, and discharg-
ing. An OPC drum is used as the photocoductor drum. Toner is of
one-component. For charging, the rotation brush is used. For trans-
fer, the roller is used and virtually no generation of ozone. It is also
compact. The high voltage required in this section is provided by the
high voltage power PWB.
High voltage
circuit
circuit
Main charger
brush
brush
Cleaning, charging
High voltage
circuit
circuit
Discharging
brush
brush
Discharging
Paper exit
Fusing
Separation
Separation
electrode
electrode
Heat roller,
pressure roller
pressure roller
Heater lamp
Scanning
mirror
mirror
Lens
Laser diode
No. 1 -
No. 3 mirror
Exposure
Development,
residual toner
collection
Toner
Development
roller
roller
High voltage
circuit
circuit
Transfer
Paper feed roller
Paper tray
Paper
Transfer charger roller
High voltage circuit
1 – 15
Click on the first or last page to see other AL-840 (serv.man3) service manuals if exist.