This paper proposes a newly developed laser scanner motor with low power consumption, operating at a high speed of rotation. The principle of the scanner motor is that of a herringbone-grooved journal bearing functioning as a viscous vacuum pump. The windage power loss of a polygon mirror can be reduced because the air inside the housing is pumped out by herringbone-grooved viscous vacuum pumps. The performance of the proposed laser scanner motor was measured under various conditions. It was subsequently found that the proposed scanner motor of a laser beam had much reduced power consumption and higher scanning accuracy than the conventional scanner motor in which the rotor is rotated in the air.

1.
James
D. D.
, and
Potter
A. F.
,
1967
, “
Numerical Analysis of the Gas-Lubricated Spiral-Groove Thrust Bearing-Compressor
,”
ASME JOURNAL OF LUBRICATION TECHNOLOGY
, Vol.
89
, No.
4
, pp.
439
444
.
2.
Sato
Y.
,
Ono
K.
, and
Iwama
A.
,
1990
, “
The Optimum Groove Geometry for Spiral Groove Viscous Pumps
,”
ASME JOURNAL OF TRIBOLOGY
, Vol.
112
, No.
2
, pp.
409
414
.
3.
Sato
Y.
, and
Knight
J. D.
,
1992
, “
Performance Characteristics of Shrouded Reyleigh-Step and Spiral Groove Viscous Pumps
,”
ASME JOURNAL OF TRIBOLOGY
, Vol.
114
, No.
3
, pp.
499
506
.
4.
Tanaka
K.
. and
Muraki
H.
,
1991
, “
Performance of Air-Lubricated Hydrodynamic Bearing Spindles for Laser Scanners
,”
ASME JOURNAL OF TRIBOLOGY
, Vol.
113
, No.
3
, pp.
609
614
.
This content is only available via PDF.
You do not currently have access to this content.