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:
Jan. 08, 1991
Filed:
May. 31, 1988
Applicant:
Inventors:
Assignee:
Kuraray Company, Ltd., Kurashiki, JP;
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428 64 ; 428 65 ; 428209 ; 4284111 ; 428412 ; 428457 ; 428458 ; 428461 ; 428463 ; 4284744 ; 428480 ; 428500 ; 428697 ; 428704 ; 428913 ; 430945 ; 346766 ; 3461351 ; 369288 ;
Abstract
An optical recording medium comprising a plastic substrate having a surface of minutely roughened structure and a thin metal film formed on the substrate is capable of strongly absorbing laser light of a specific wavelength region, thereby writing data on the medium. The optical recording medium is characterized in that the thin metal film comprises a metal of the platinum group and a second metal or semi-metal such that the thermal conductivity of the thin metal film is not higher than 80% of the thermal conductivity of the platinum group pure metal. The optical recording medium is, since jitter has been decreased, capable of a high-sensitivity and high-CNR recording.