41356801TH Rev.1
23 /
(1) Image Drum Unit
The image drum unit consists of a sensitive drum, a charger, and a developer. The unit forms a toner
image on the sensitive drum, using a electrostatic latent image formed by the LED head.
(2) Registration Motor
The registration motor is a pulse motor of 48 steps/rotation with two-phase excitement by the signal
from the main control board. It drives the hopping and registration rollers via two one-way clutches
according to the direction of rotation.
(3) Main (Drum) Motor
The main or drum motor is a pulse motor of 48 steps/rotation with two-phase excitement by the signal
from the main control board and is the main motor of this mechanism.
(4) LED Head
Image data for each dot line from the main control board is received by the shift register and latch
register. The 4992 LED's are driven to radiate the image data on the image drum.
(5) Fuser
The fuser consists of a heater, a heat roller, a thermistor and a thermostat.
The AC voltage from the power supply/sensor board is applied to the heater controlled by the
HEATON signal from the main control board. This AC voltage heats the heater. The main control
board monitors the heat roller temperature via the thermistor, and regulates the heater roller to keep
it at a designated temperature in the menu, depending on the thickness of the paper (tray 1&2:
light=175~185
°
C, medium light=180~190
°
C, medium=185~195
°
C, medium heavy and
heavy=195~205
°
C; manual feeding and power envelope feeder: light=165~180
°
C, medium
light=170~185
°
C, medium=175~190
°
C, medium heavy=180~195
°
C, heavy=190~205
°
C, trans-
parency = 170~185
°
C) by connecting or disconnecting the AC voltage supply to the heater.
When an abnormal rise of the heater roller temperature takes place, the thermostat of the heater
voltage supply circuit becomes active and forcibly cuts the AC voltage supply.
The temperature setting of the fuser can be changed through operator panel setting.
Содержание OKIPAGE 14
Страница 1: ...41356801TH Rev 1 1 209 OKIPAGE 14i LED Page Printer Maintenance Manual Rev 1 2000 09 21 ODA OEL INT ...
Страница 46: ...41356801TH Rev 1 46 Upper cover unit Figure 3 2 Upper cover ...
Страница 112: ...41356801TH Rev 1 112 Figure 6 5 Contact Power supply sensor board Contact plate for transfer roller ...
Страница 115: ...41356801TH Rev 1 115 2 Power Supply Sensor Board CN2 CN3 CN4 CN1 SW1 F1 PS1 PS2 PS3 PS4 SW2 PS6 PS5 ...
Страница 125: ...41356801TH Rev 1 125 Unit Fan Circuit Diagram Illustration Resistance Red Black 30 V 1 FANALM N 3 0 V 2 M ...
Страница 129: ...41356801TH Rev 1 129 Figure 8 2 Upper cover unit 1 ...
Страница 130: ...41356801TH Rev 1 130 Table 8 2 Upper cover unit No Name Rating Part No Use Remarks ODA Part No Cover Upper 1 1 40715101 ...
Страница 174: ...41356801TH Rev 1 174 5 2 PCB Layout OLEV 11 PCB CN3 CN2 SEN2 ...
Страница 175: ...41356801TH Rev 1 175 6 PARTS LIST Figure 6 1 Multi Purpose Feeder 9 5 7 6 4 1 2 3 8 ...
Страница 190: ...41356801TH Rev 1 190 CONTROLLER MOTOR DRIVER SEN2 SEN1 OSC PU MOTOR 5 2 PCB Layout TQSB 2 PCB ...
Страница 191: ...41356801TH Rev 1 191 Figure 6 1 High Capacity Second Paper Feeder 1 2 4 3 5 6 PARTS LIST ...
Страница 194: ...41356801TH Rev 1 194 SECTION1 CABINET CASSETTE ASSEMBLY 5 6 3 2 4 7 8 1 iv iv i i ...
Страница 195: ...41356801TH Rev 1 195 SECTION2 MECHANICAL ASSEMBLY 21 9 11 10 12 13 23 22 14 24 iii ii 15 16 17 19 18 20 A A B B ...