The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 13, 2001
Filed:
Dec. 06, 1999
Fumiya Hisa, Ebina, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
Discloses an optical deflector that enables a rotary polygon mirror to rotate at high speed with high reliability and a low noise level, and can prevent the rotary polygon mirror from disengaging from a stationary axis with a compact and simple construction, and an optical scanner including the optical deflector. A disengagement prevention member is mounted at the tip of a stationary axis. Since a gap is formed between the stationary axis and a rotary axis and prevents friction by rotation, a rotary polygon mirror can be rotated at higher speed. There is no or less noise and vibration due to the rotation of the rotary polygon mirror, so that durability and reliability are improved. Even if a rotor moves in the axial direction, the rotor is prevented from disengaging by the disengagement prevention member, so that it never disengages accidentally from the stationary axis.