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. 07, 1992
Filed:
Dec. 28, 1989
Applicant:
Inventors:
Nobuyuki Matsuzawa, Kanagawa, JP;
Nobutoshi Asai, Kanagawa, JP;
Shinichiro Tamura, Kanagawa, JP;
Noriyuki Kishii, Kanagawa, JP;
Seiichi Arakawa, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ;
U.S. Cl.
CPC ...
430495 ; 430270 ; 430945 ; 3461351 ;
Abstract
An optical recording medium is disclosed, in which an optical recording layer and a reflective layer are formed on a transparent substrate. The recording layer contains a first compound having absorption or a recording laser light having a predetermined wavelength, and a second compound having substantially no absorption for a laser light having the predetermined wavelength and decomposable upon heat generation by the laser light in the optical recording layer.