Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL
97.04.01
M-17
1156SBM0900A
DRUM CHARGING9
The PC Drum Charge Corona has a Scorotron grid to deposit a negative DC charge
evenly across the surface of the PC Drum. The grid voltage (VG) applied to the grid mesh
is selected between –550V (initial value, variable according to image stabilization
controls) in the normal mode and the value in the normal mode +90V in the Photo mode
by the Constant-Voltage Circuit in High Voltage Unit HV1.
The Corona Unit has a Comb Electrode which minimizes the amount of ozone produced.
The conventional wire type corona unit produces a large amount of ozone due to corona
discharge in radial directions. The comb electrode type, on the other hand, discharges
only toward the Grid Mesh, meaning a reduced amount of ozone is produced.
The Comb Electrode can be cleaned by the user who pulls out to the front the shaft on
which a Cleaning Rollar is mounted.
Holder Comb Electrode Spring Holder
Grid Mesh
1151T03MCC
Control Signal ON OFF WIRING DIAGRAM
PC Drum
Charge Corona
PWB-A PJ13A-2 L H 3-F
Control Signal
Normal
Mode
Photo Mode WIRING DIAGRAM
Grid Voltage
(VG)
PWB-A PJ13A-1 Pulse output 3-F
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