Oki MC860 Maintenance Manual

43967002TH Rev.1
51 /
Oki Data CONFIDENTIAL
2. Theory of Operation
2.3.2.3 Mirror carriage drive mechanism
<Carriage A>
• Scanner performs the function of irradiating the lamp light uniformly over a document
while moving its position, and also of inputting the reflected light to the mirror carriage
B via the mirror A. The mirror carriage A is driven by the two timing belts which are
driven by the FBS motor.
Scanner moves at the scan speed corresponding to the respective magnification
ratios that are set with reference to the standard scanning speed.
• Home position of the mirror carriage A is the position where the home sensor is
located. The home sensor position is the reference position of the scanning operation.
<Carriage B>
• The mirrors B and C are fixed to the holder with the relative angle of 90 degrees. The
reflected light from the mirror A is input to the CCD device via the mirrors B and C,
and lens.
• The mirror carriage B is driven by the FBS motor using a timing belt and pulley. The
light path length between the document and the lens is maintained to a constant
value as the mirror carriage B moves at a half speed of the mirror carriage A.
1 APS sensor 8 CCD PCB
2 BIS sensor 9 Carriage A
3 Carriage B 10 Lamp
4 BSS sensor (beam sensor) 11 Mirror A
5 FBS motor 12 Home sensor
6 Inverter 13 Mirror B, Mirror C
7 Lens
10
11
12
9
4
3
1
2
5
6
8
7
13

Oki MC860 Specifications

Printing Specifications

print speed color	26 ppm
print speed black & white	33 ppm
time to first page color	10 seconds
time to first page black & white	9.5 seconds
print resolution	1200 x 600 dpi
processor	500 MHz PowerPC CPU
duty cycle	75, 000 prints per month

Copying Specifications

copy speed color	26 cpm
copy speed black & white	33 cpm
first copy out color	14.5 seconds
first copy out black & white	13 seconds
copy resolution	600 x 600 dpi

Scanning Specifications

scan type	Color and black & white
max scan area	11" x 17"
scan speed black & white	33 spm
scan speed color	26 spm
scan resolution	600 dpi

Fax Specifications

fax modem	33.6 Kbps Super G3
transmission speed	2 seconds/page
fax resolution	600 x 600 dpi
speed dial locations	500 locations
broadcast transmission locations	530 locations

Power and Acoustic Noise

power consumption peak	1, 300W
power consumption standby	160W Avg.
power save mode	≤25W
acoustic noise operating	54dB
acoustic noise standby	≤37dB

System Memory

standard imaging RAM	512 MB
max imaging RAM	768 MB
hard disk drive	40 GB

Weight and Dimensions

1-tray configuration dimensions	22.2" x 25.9" x 26.3"
2-tray configuration dimensions	33.3" x 30.2" x 44.5"
weight 1-tray configuration	149.9 lb
weight 2-tray configuration	200.6 lb
weight 3-tray configuration	211.6 lb