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:
Jun. 28, 1977
Filed:
Oct. 24, 1974
Applicant:
Inventor:
Takeshi Goshima, Tokyo, JA;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D / ;
U.S. Cl.
CPC ...
346108 ; 350255 ; 3561 / ;
Abstract
A high density optical recording apparatus provided with a light sensitive member adapted to make concave and convex records in response to beams. A recording medium is placed on the disc and a shaft axially secured to the disc is rotated by means of a motor to turn the recording medium together with the disc. An interference optical system is provided to strictly maintain the relative position between the recording optical system and the recording medium. A floating body provided with a plurality of floaters is adapted to be floated by an air flow generated when the recording medium is turned.