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:
Sep. 26, 2006
Filed:
Sep. 22, 2003
Fumikata Andoh, Atsugi, JP;
Hideki Konno, Atsugi, JP;
Shinobu Kanatani, Atsugi, JP;
Yasuhiro Aridome, Aikou-gun, JP;
Fumikata Andoh, Atsugi, JP;
Hideki Konno, Atsugi, JP;
Shinobu Kanatani, Atsugi, JP;
Yasuhiro Aridome, Aikou-gun, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A polygon mirror scanner is disclosed, comprising a rotor having a rotating shaft, a polygon mirror having a regular prism and having a mirror surface on each side thereof, and a magnet; a bearing device, rotatably bearing the rotor, having a radial bearing, a thrust bearing, and a stator yoke; and a stator having a coil facing the magnet with a predetermined distance therebetween, wherein the radial bearing and the thrust bearing are exchangeable at the end of their useful life while maintaining a desired level of high precision and tolerances for proper and efficient operation of the polygon mirror scanner.