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:
Oct. 17, 2006
Filed:
Apr. 01, 2005
Yuji Kuroda, Tokyo, JP;
Koichiro Kishima, Kanagawa, JP;
Isao Ichimura, Tokyo, JP;
Kiyoshi Osato, Chiba, JP;
Yuji Kuroda, Tokyo, JP;
Koichiro Kishima, Kanagawa, JP;
Isao Ichimura, Tokyo, JP;
Kiyoshi Osato, Chiba, JP;
Sony Corporation, Tokyo, JP;
Abstract
An optical recording medium and an optical recording and reproduction device including the same, wherein the optical recording medium comprises a substrate, a reflective layer formed on the substrate, a recording layer formed on the reflective layer, a first protective layer formed on the recording layer and a transparent heat radiating layer formed on the first protective layer for promoting dispersion of heat from the recording layer, and light is focused on the recording layer from an optical system via a side at which the first protective layer is formed to prevent heat buildup, erasure of recorded signals and damage to the optical recording medium.