Polygonal Motor Unit - Toshiba e-STUDIO520 Service Manual
Multifunctional digital systems
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Also See for e-STUDIO520:
- Service handbook (650 pages) ,
- User functions manual (202 pages) ,
- Network administration manual (124 pages)
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8.2.2
Polygonal motor unit
This unit consists of the polygonal motor (M2), polygonal mirror and polygonal mirror cover.
a. Polygonal motor
This motor rotates the polygonal mirror at a high speed. The DC motor controls the rotation speed of
the motor as follows.
e-STUDIO520/600/720
During printing: Approx. 60236.22 rpm (600 dpi)
Approx. 61597.53 rpm (FAX 15.4 x 16.0 dot/mm)
Approx. 59287.62 rpm (FAX 16.0 x 15.4 dot/mm)
e-STIDIO850
During printing: Approx. 36318.898 rpm (600 dpi)
Approx. 37139.685 rpm (FAX 15.4 x 16.0 dot/mm)
Approx. 35746.946 rpm (FAX 16.0 x 15.4 dot/mm)
b. Polygonal mirror
The e-STUDIO520/600/720 has a 1-beam type of laser unit. One laser beam emitted from the laser
diode is reflected by this mirror. As the polygonal mirror is rotated by the polygonal motor (M2), the
reflected laser beam moves in sync with the rotation. The direction of the movement is the primary
scanning direction of the image. One scan is performed on 1 plane of the polygonal mirror. As the
polygonal mirror has 8 planes, 8 scans are performed in 1 rotation.
e-STUDIO850 has a 2-beam type of laser unit. Two laser beams emitted from the laser diode are
reflected by this mirror. Two scans are performed on 1 plane of the polygonal mirror. As the polygo-
nal mirror has 8 planes, 16 scans are performed in 1 rotation.
March 2005 © TOSHIBA TEC
e-STUDIO520/600/720/850 LASER OPTICAL UNIT
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