MINOLTA-QMS magicolor 6100 Series Service Manual page 68

Page 1-12
4.2.3.2 Exposing
During the exposing process, the OPC belt surface is exposed by a laser
beam, which forms an electrostatic latent image.
4.2.3.2.1
4.2.3.2.2
Charging
Structure of the Optical Unit
The optical unit is located as shown in Fig. 4-8.
The source of the laser beam is a semiconductor laser. The
laser beam is transformed into a beam of light by the optical
unit. Scanning over the OPC belt creates an electrostatic
latent image.
Process of Exposing
(see Fig. 4-12)
The OPC belt surface has been charged to the potential -V
The laser beam scans across the OPC belt as the belt moves
in its forward direction. The image data transmitted from the
host switches the laser on and off. The areas exposed to the
laser are discharged to the potential of -V
An invisible electrostatic latent image is formed on the OPC
belt (see Fig. 4-12).
-V
O
Exposing
Fig. 4-13
.
R
-V
R
magicolor 6100 Series Service Manual
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