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:
Mar. 31, 1992
Filed:
Jul. 08, 1991
Applicant:
Inventors:
Hiroshi Inoue, Tokyo, JP;
Hiroto Kitai, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369244 ; 369251 ; 369255 ; 310 905 ;
Abstract
An optical information recording-reproducing apparatus includes an optical head unit, a holding device, a moving device and a guide shaft. The optical head unit effects recording and/or reproduction of information on an optical information recording medium. The holding device holds the optical information recording medium. The holding device includes a guide portion and a magnetic field producing device provided near the lower portion thereof. The moving device moves the holding device relative to the optical head unit. The guide shaft, formed of a magnetic material, guides the holding device for movement in a predetermined direction.