FS-1030D Service Manual - kyocera
FS-1030D Service Manual - kyocera
FS-1030D Service Manual - kyocera
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2G6<br />
(3-2) Drum surface potential<br />
The laser beam is continually switched on and off depending on the print data. It is on for a black (exposed) dot and off<br />
for a white (blank) dot. Since the drum surface is evenly charged, whenever it is illuminated by the laser beam, the<br />
electrical resistance of the photoconductor is reduced and the potential on the photoconductor is also lowered. Resulted<br />
on the drum surface is an electrostatic image which represents the data to print. Note that the area to be printed black<br />
has the low potential, constituting a “positively exposed” image.<br />
Laser beam<br />
Exposed surface potential<br />
approximately +60 to +80 V<br />
Charged surface potential<br />
+400±15 V<br />
OPC<br />
layer<br />
Aluminum<br />
cylinder<br />
Drum<br />
Figure 2-1-12 Drum surface potential<br />
2-1-12