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:
Aug. 09, 1994
Filed:
Feb. 19, 1993
Applicant:
Inventor:
Miyozo Maeda, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369112 ; 369 4423 ; 369107 ; 369 4432 ;
Abstract
A disk storage device includes a light source emitting a light, an objective lens for focusing the light on a surface of a recording film of a disk via a protection film protecting the recording film, and a motor for rotating the disk. A detector receives the light reflected by the surface of the recording film and reproduces information recorded on the recording film. The detector is located at a position where the following condition is satisfied: