December 2000 © TOSHIBA TEC
8 - 3
1600/2000/2500 PRINTING
(2) Polygonal-Mirror Motor Unit
The polygonal-mirror motor unit comprises a po-
lygonal mirror and a polygonal-mirror motor.
Polygonal-mirror motor
The polygonal-mirror motor rotates the po-
lygonal mirror at high speed.
The DC motor controls the rotation speed
of the mirror as follows:
DP1600 series
600 dpi
:
20,527.56 rpm
400 dpi
:
13,382.60 rpm
DP2000/2500 series
600 dpi
:
27,874.016 rpm
400 dpi
:
18,582.677 rpm
Polygonal mirror
The laser beams emitted from the laser di-
ode are reflected by this mirror. As the po-
lygonal mirror is rotated by the polygonal-
mirror motor, the direction of the reflected
laser light moves in sync with the rotation.
The direction of movement is the primary
scanning direction of the image with each
single scan ending in one plane of the po-
lygonal mirror.
As the polygonal mirror has six planes, six
scans are completed in one rotation of the
polygonal mirror.
Fig. 8-2-2
One scan is completed by completion of steps A to C .
One scan is carried out on one plane of the polygonal
mirror. Six scans can be carried out with one rotation of
the polygonal mirror.
Laser light
Drum
Drum
Drum
Laser light
Laser light
B
C
A
09-02-02
Summary of Contents for DP1600
Page 1: ...DIGITALPLAINPAPERCOPIER DP1600 2000 2500 File No 31100011 R0111216600 TTEC ...
Page 2: ...Copyright 2000 TOSHIBA TEC CORPORATION ...
Page 232: ...1600 2000 2500 PCB BOARD 16 2 December 2000 TOSHIBA TEC 16 2 PWA F RLY 16 02 01 ...
Page 233: ...December 2000 TOSHIBA TEC 16 3 1600 2000 2500 PC BOARD 16 3 PWA F PIF 16 03 01 ...
Page 237: ...17 WIRE HARNESS CONNECTION DIAGRAMS 17 1 ...
Page 264: ...1 1 KANDA NISHIKI CHO CHIYODA KU TOKYO 101 8842 JAPAN ...