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:
Nov. 02, 1993
Filed:
Apr. 29, 1992
Applicant:
Inventors:
Hideki Takeda, Kawasaki, JP;
Fumiko Osawa, Toyama, JP;
Assignee:
Yoshida Kogyo K.K., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369288 ; 430495 ; 430945 ; 4286 / ; 369100 ; 420416 ; 148301 ;
Abstract
This invention relates to a recording medium having a sufficient difference between the crystallization temperature and the melting point as well as excellent characteristics in writing and erasing. The optical recording medium comprises a recording layer consisting of a recording material capable of recording and erasing through transition between an amorphous phase and a crystalline phase by laser beam heating, the recording material having a composition represented by the general formula: