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(7) Fusing
The transferred unfused toner image is fused to a sheet of paper because heat and pressure
are applied when it passes between the heat roller and back-up roller.
The Teflon-coated heat roller contains a 400 W heater (Halogen lamp) that heats the heat
roller. The thermistor on the surface of the heat roller keeps the temperature of the heat roller
constant. A thermostat is also installed for safety. If temperature rises abnormally, this
thermostat opens to suspend voltage supply to the heater.
The back-up roller is pressurized to the heat roller by the pressure spring on each side.
Cleaning roller
Transfer roller
OPC drum
Thermistor
Heat roller
Heater
Back-up roller
Pressure spring
(8) Cleaning
After transfer has terminated, the cleaning roller temporarily draws in the untransferred
residual toner adhering to the OPC drum with static electricity and then returns it to the OPC
drum.
Separation claw
High-voltage
power supply
Summary of Contents for OKIPAGE 4M
Page 2: ...HP LaserJet and PCL5e are trademarks of Hewlett Packard Co...
Page 6: ...1 CONFIGURATION...
Page 9: ...1 3 1 3 Option 1 2MB HBRB PCB Option Memory Board Only OKIpage 4m...
Page 13: ...2 OPERATION DESCRIPTION...
Page 36: ...3 PARTS REPLACEMENT...
Page 41: ...3 5 Base Plate Unit Figure 3 3 Power supply unit Main control board Base plate assy...
Page 51: ...3 15 1 1 3 2...
Page 52: ...3 16 7 9 B Voltage display side 8 C 8 5 A 0 6 4...
Page 62: ...4 ADJUSTMENT...
Page 68: ...5 PERIODICAL MAINTENANCE...
Page 71: ...6 TROUBLESHOOTING PROCEDURES...
Page 93: ...7 WIRING DIAGRAM...
Page 98: ...7 5 7 2 3 High Voltage Power Supply Board...
Page 99: ...8 PARTS LIST...
Page 100: ...8 1 8 PARTS LIST Figure 8 1 Cover Assy Upper 6 5 4 1 2 3 1...
Page 105: ...8 6 1 3 4 2 5 Figure 8 3 Heat Assy...
Page 107: ...8 8 Figure 8 4 Base Plate Unit 7 7 7 7 3 4 2 6 1 8 9...
Page 109: ...APPENDIX...
Page 116: ...C 2 As viewed from the cable side 8 7 6 5 4 3 2 1 5 Connector Pin Arrangement...
Page 121: ...D 5 Engine Maintenance Driver GUI Figure D 1 Main Menu Dialog Figure D 2 Test Print Dialog...
Page 122: ...D 6 Figure D 3 Option Menu...
Page 123: ...D 7 Figure D 4 About Dialog...