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Oki C531 Maintenance Manual

Oki C531
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44951501TH Rev.2
2-4
Oki Data CONFIDENTIAL
2. DESCRIPTION OF OPERATION
(6) Fusing
The toner image transferred on the paper is fused on the paper by heat and
pressure when the paper passes through the heat roller and the backup roller unit
(consists of a backup roller, a pat, and a fuse belt).
The heat roller is heated by 640W and 350W internal halogen lamps, and the
backup roller has no internal halogen lamps and is heated by heat transferred from
the heat roller. The fuser temperature is controlled according to the temperature
that is detected with the thermistor not contacting to the heat roller surface. The
temperature detected with the other thermistor that is frictionally sliding against the
backup roller surface is used to control the fuser temperature under designated
conditions. There is also a thermostat for safety purposes. When the heat roller
temperature rises above a certain temperature, the thermostat is open and voltage
supply to the heater is cut off. The backup roller unit is pressed against the heater
by the press spring on both sides.
(7) Drum cleaning
Unfixed toner remaining on the OPC drum is removed by the drum cleaning blade
and collected into the waste toner area of the K toner cartridge.
Heat roller
Backup roller
Pat
Thermistor
Thermistor
Paper
Paper transfer direction
Thermostat
Fuser belt
Waste toner area
Toner cartridge
ID unit
Drum cleaning
blade
waste toner of
waste toner path
(8) Static elimination
After completing transfer, the OPC drum is illuminated with its surface to reduce
static charge of its surface.
Static-eliminating
Static-eliminating
OPC drum

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Oki C531 Specifications

General IconGeneral
Print TechnologyLED
Print Speed (Black)30 ppm
Print Speed (Color)30 ppm
Duplex PrintingYes
Operating System CompatibilityWindows, Mac OS, Linux
Weight22 kg
ConnectivityUSB 2.0, Ethernet
Media SizeA4, A5, A6, B5, Letter, Legal, Envelopes
ResolutionUp to 1200 x 600 dpi
Input Capacity250 sheets

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