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:
Feb. 05, 1991
Filed:
Jan. 30, 1989
Applicant:
Inventor:
Hideki Ohkawa, Tokyo, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428 64 ; 428 65 ; 428408 ; 428913 ; 369288 ; 346 / ; 3461351 ; 430945 ;
Abstract
An optical memory for optically storing and reproducing data comprises a substrate, an under layer and a recording layer. The under layer contains carbon and fluorine. The recording layer contains carbon and at least one of a metal and semiconductor material. The under layer acts as a barrier to H.sub.2 O and O.sub.2 diffused through the substrate toward the recording layer. The optical memory has an excellent write sensitivity and anti-oxidization characteristics. Also, the optical memory is capable of stable data storage over a long time period.