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:
Nov. 14, 2000
Filed:
Dec. 20, 1995
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The present invention is directed to a balance correcting method for scanning optical apparatus for deflection-scanning a light beam in such an arrangement that a drive motor is of an inner rotor type in which a rotary body having a drive magnet is disposed inside a stator and a rotary polygon mirror is mounted on the rotary body so as to enable deflection scanning of the light beam, wherein a mechanical part having the rotary body is arranged as separable from an electric circuit part having the stator, the mechanical part having the rotary body is separated from the electric circuit part upon balance correction, only the mechanical part is then mounted on a balance corrector, the mechanical part is rotated by a stator as a rotating device preliminarily provided in the balance corrector, and an amount of unbalance is measured and adjusted.