Operation Description
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OL600e/610e/610e-PS/610e-S
Service Manual, P/N 59271602
When the light from the LED head irradiates the image drum surface, the light energy gener-
ates positive and negative carriers in the carrier generation layer (CGL). The positive carriers
are moved to the carrier transfer layer (CTL) by an electrical field acting on the image drum.
Likewise, the negative carriers flow into the aluminum layer (ground).
The positive carriers moved to the carrier transfer layer (CTL) combine with the negative
charges on the image drum surface accumulated by the contact charge of the charge roller,
lowering the potential on the image drum surface. The resultant drop in the potential of the
irradiated portion of the image drum surface forms an electrostatic latent image on it. The
irradiated portion of the image drum surface is kept to about –100 V.
(V)
–750
–100
0
Light
from
LED
Image drum
surface potential
Charged part
Part
irradiated
by
LED
Charged
part