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Oki MC860 Maintenance Manual

Oki MC860
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43967002TH Rev.1
33 /
Oki Data CONFIDENTIAL
2. Theory of Operation
(6) Fix
The toner image that is transferred to paper is fused on the paper when heat and
pressure are applied while a paper passes through the contacting point between
the heat roller and the backup roller unit (the backup roller, the pad and the fuser
belt).
The
heat roller is heated by the internal halogen lamps of 800W and of 350W.
The backup roller is heated by the internal halogen lamp of 50 W. The fusing
temperature is controlled by the sum of the temperature that is detected by the
thermistor which is not contacting with the heat roller surface, and the temperature
that is detected by the thermistor which is contacting with the backup roller surface.
For safety purpose, thermostat is provide. If the heat roller temperature increases
higher than the specified temperature, the thermostat opens so that the voltage
supply to the heat is shut down. The backup roller unit is pressed against the heater
by the pressure springs on both sides.
(7)
Drum cleaning
The toner that is not used for fusing and remained on the OPC drum surface is
scraped off by the drum cleaning blade and is collected in the waste toner area of
toner cartridge.
Heat roller
Backup roller
Pad
Thermistor
Thermistor
Thermostat
Paper
Thermostat thermistor
Fuser belt
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ID unit
Waste toner area
Toner cartridge
Drum cleaning blade
(8) Belt cleaning
The toner that is remained on the transfer belt is scraped off by the belt cleaning
belt and collected in the waste toner box.
Belt waste toner box
Transport belt
Belt cleaning blade

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Oki MC860 Specifications

Printing Specifications IconPrinting Specifications
print speed color26 ppm
print speed black & white33 ppm
time to first page color10 seconds
time to first page black & white9.5 seconds
print resolution1200 x 600 dpi
processor500 MHz PowerPC CPU
duty cycle75, 000 prints per month
Copying Specifications IconCopying Specifications
copy speed color26 cpm
copy speed black & white33 cpm
first copy out color14.5 seconds
first copy out black & white13 seconds
copy resolution600 x 600 dpi
Scanning Specifications IconScanning Specifications
scan typeColor and black & white
max scan area11" x 17"
scan speed black & white33 spm
scan speed color26 spm
scan resolution600 dpi
Fax Specifications IconFax Specifications
fax modem33.6 Kbps Super G3
transmission speed2 seconds/page
fax resolution600 x 600 dpi
speed dial locations500 locations
broadcast transmission locations530 locations
Power and Acoustic Noise IconPower and Acoustic Noise
power consumption peak1, 300W
power consumption standby160W Avg.
power save mode≤25W
acoustic noise operating54dB
acoustic noise standby≤37dB
System Memory IconSystem Memory
standard imaging RAM512 MB
max imaging RAM768 MB
hard disk drive40 GB
Weight and Dimensions IconWeight and Dimensions
1-tray configuration dimensions22.2" x 25.9" x 26.3"
2-tray configuration dimensions33.3" x 30.2" x 44.5"
weight 1-tray configuration149.9 lb
weight 2-tray configuration200.6 lb
weight 3-tray configuration211.6 lb

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