FrameMaker Ver.5.5E(PC) EP3000/EP3010 GENERAL, MECHANICAL/ELECTRICAL
98.06.10
M-16
<Relation with Image Density>
The “Image Exposure” function of “Tech. Rep. Choice” available from the Tech. Rep. mode
enables fine-adjustments of the grid voltage (solid-black image density) to be made. It
specifies how many volts the optimum grid voltage determined by the image stabilization
control is to be increased or decreased. This fine-adjustment value remains the same even
when the optimum grid voltage is later varied by the image stabilization control.
3. Optimum Exposure Lamp voltage correction
The Exposure Lamp is turned ON to illuminate the halftone patch on the back of the Origi-
nal Width Scale, thereby producing a halftone pattern on the surface of the PC Drum. The
Exposure Lamp voltage is then varied so that the output from the AIDC Sensor falls within
the target range, thereby ensuring an optimum exposure level.
<Relation with “Manual Exposure Level” of F5>
The “manual exposure level” of Function F5 available from the Tech. Rep. mode enables
fine-adjustments of the Exposure Lamp voltage (halftone image density) to be made. It
specifies how many volts the optimum Exposure Lamp voltage determined by the image
stabilization control is to be increased or decreased. This fine-adjustment value remains
the same even when the optimum Exposure Lamp voltage is later varied by the image sta-
bilization control.
4. AE Sensor gain adjustment
The Exposure Lamp is turned ON to illuminate the blank sheet of paper placed on the Orig-
inal Glass (when an F5 or FF operation is run) or the halftone patch on the back of the Orig-
inal Width Scale (when AE Sensor gain is adjusted in a sequence other than F5 or FF).
The reflected light is then read by the AE Sensor and a gain adjustment of the AE Sensor is
made to maintain an optimum Auto exposure level.
Controlled Part
Control Signal
ON
OFF
WIRING DIAGRAM
Grid voltage output from
High Voltage Unit HV1
PJ27A-1
Pulse Output
1-F
Control Value
1 Step
Initial Value
Exposure Lamp voltage
(100V Areas)
47 to 75V
1V
58V
Exposure Lamp voltage
(200V Areas)
94 to 140V
2V
116V
Controlled Part
Control Signal
ON
OFF
WIRING DIAGRAM
Exposure Lamp
Regulator (PU2) REM
PJ36A-3
Pulse output
22-B
Controlled Part
Control Signal
ON
OFF
WIRING DIAGRAM
AE Sensor Board PWB-H
PJ5A-2
Pulse Output
8-F