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:
Jul. 17, 1990
Filed:
Feb. 24, 1989
Applicant:
Inventors:
Susumu Era, Ichihara, JP;
Setsuo Kobayashi, Hitachi, JP;
Mariko Nakamura, Hitachi, JP;
Akio Mukoh, Mito, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428 64 ; 428 65 ; 428195 ; 428409 ; 428333 ; 428334 ; 428335 ; 428336 ; 428457 ; 428461 ; 428446 ; 428448 ; 428913 ; 346-11 ; 346766 ; 3461351 ; 430945 ; 369284 ; 369288 ; 427 531 ; 427 55 ; 427162 ; 427240 ;
Abstract
In an optical data storage medium comprising a resin, substrate, a primary coat formed thereon and a recording layer of a dye decomposable by a laser beam formed on the primary coat, said primary coat is a silicone resin layer whose surface had been subjected to a plasma treatment. The primary coat prevents the substrate from attack by solvent for forming the recording layer, and enables the recording layer to be uniform in thickness with good adhesion.