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. 11, 2005
Filed:
May. 13, 2003
Yasuo Hosoda, Tsurugashima, JP;
Satoshi Jinno, Tsurugashima, JP;
Ayumi Mitsumori, Tsurugashima, JP;
Hideo Kudo, Tsurugashima, JP;
Yasuo Hosoda, Tsurugashima, JP;
Satoshi Jinno, Tsurugashima, JP;
Ayumi Mitsumori, Tsurugashima, JP;
Hideo Kudo, Tsurugashima, JP;
Pioneer Corporation, Tokyo, JP;
Abstract
An object of the present invention is to provide a phase-change optical recording medium of an amorphous recording mark type. The optical recording medium is a write once type medium capable of decreasing the degradation of an information signal which has been already recorded. The recording layer of the optical recording medium according to the present invention includes a first recording layer and a second recording layer. The first recording layer comprises a first composition which can be changed into another composition more stable in an amorphous state by combining with a component included in the second recording layer.