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


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
Your Session has timed out. Please sign back in to continue.





Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In