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. 21, 2000
Filed:
May. 27, 1999
Applicant:
Inventor:
Shinichi Ozaki, Kanagawa, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
359200 ; 359198 ; 359216 ;
Abstract
A scanner using a polygonal mirror includes a rotor with a magnet mounted thereon, a rotary shaft on which the rotor is mounted, and a stator with a coil facing the magnet at a preselected distance. The rotor is machined in the form of a square pillar having mirror surfaces at sides thereof to thereby form the polygonal mirror. A recess is formed in one major surface of the rotor while the magnet is press fitted in the recess. The scanner with this configuration needs a minimum number of parts, obviates the need for highly accurate adhesion and is durable and easy to produce.