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. 15, 2013
Filed:
Apr. 26, 2011
Koji Takazawa, Tokyo, JP;
Seiji Morita, Yokohama, JP;
Kazuyo Umezawa, Yokohama, JP;
Naoki Morishita, Yokohama, JP;
Yasuaki Ootera, Yokohama, JP;
Hideo Ando, Hino, JP;
Naomasa Nakamura, Yokohama, JP;
Koji Takazawa, Tokyo, JP;
Seiji Morita, Yokohama, JP;
Kazuyo Umezawa, Yokohama, JP;
Naoki Morishita, Yokohama, JP;
Yasuaki Ootera, Yokohama, JP;
Hideo Ando, Hino, JP;
Naomasa Nakamura, Yokohama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
According to one embodiment, an optical recording medium is provided in which interlayer crosstalk is low and in which stable and high-quality recording characteristics can be obtained. To this end, an optical recording medium comprises a first recording part which includes a first recording layer and a first light reflecting layer and which is disposed on a side closer to a light receiving surface, and a second recording part which includes a second recording layer and a second light reflecting layer and which is disposed on a side farther from the light receiving surface, the first recording part and the second recording part being stacked, wherein the thickness of the second light reflecting layer is larger than the thickness of the first light reflecting layer.