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:
Apr. 03, 2012
Filed:
Apr. 01, 2008
Noboru Sasa, Kanagawa, JP;
Masayuki Fujiwara, Miyagi, JP;
Yoshitaka Hayashi, Kanagawa, JP;
Toshishige Fujii, Kanagawa, JP;
Toshihide Sasaki, Kanagawa, JP;
Hiroyoshi Sekiguchi, Kanagawa, JP;
Hideyuki Yasufuku, Kanagawa, JP;
Kawori Tanaka, Tokyo, JP;
Kengo Makita, Kanagawa, JP;
Noriyuki Iwata, Kanagawa, JP;
Noboru Sasa, Kanagawa, JP;
Masayuki Fujiwara, Miyagi, JP;
Yoshitaka Hayashi, Kanagawa, JP;
Toshishige Fujii, Kanagawa, JP;
Toshihide Sasaki, Kanagawa, JP;
Hiroyoshi Sekiguchi, Kanagawa, JP;
Hideyuki Yasufuku, Kanagawa, JP;
Kawori Tanaka, Tokyo, JP;
Kengo Makita, Kanagawa, JP;
Noriyuki Iwata, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A write-once-read-many optical recording medium is disclosed that includes a support substrate; a recording layer on the support substrate, the recording layer containing an oxide of one of a metal and a metalloid as a principal component; and a layer adjacent to the recording layer. The recording layer includes a region where a constituent element of the adjacent layer is dispersed. Recording and reproduction are performable with laser light of a blue wavelength region.