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RESEARCH PAPERS

A Method of Reducing Windage Power Loss in a Laser Scanner Mirror by Using the Pumping Effect of Herringbone-Grooved Gas Journal Bearings

[+] Author and Article Information
S. Yoshimoto

Department of Mechanical Engineering, Science University of Tokyo, 1-3 Kagurazaka Shinjuku-ku, Tokyo, 162 Japan

A. Takahashi

Copal Electronics Co., LTD. 2188 Akami-Cho Sano-City, Tochigi, 327-01 Japan

J. Tribol 121(3), 506-509 (Jul 01, 1999) (4 pages) doi:10.1115/1.2834096 History: Received January 22, 1998; Revised June 15, 1998; Online January 24, 2008

Abstract

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.

Copyright © 1999 by Journal of Tribology
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