Title:
光記録媒体
Document Type and Number:
Japanese Patent JP4982695
Kind Code:
B2
Abstract:
Provided is an optical recording medium including, in sequence: a first substrate; a first information recording layer; an intermediate layer; a second information recording layer; and a second substrate having wobble convex portions on its surface, wherein information is recorded on or reproduced from the first information recording layer and second information recording layer by irradiation with a laser beam from a first information recording layer side, wherein the second information recording layer includes, over the second substrate, a light reflective layer, a dye recording layer, and an inorganic protective layer, wherein the inorganic protective layer has a thickness of 3 nm to 40 nm, and wherein the dye recording layer includes a cyanine compound expressed by General Formula (I) and a squarylium compound expressed by General Formula (II):
Inventors:
Yuki Nakamura
Masahiro Hayashi
Satoshi Mizukami
Toru Yatsushiro
Masahiro Hayashi
Satoshi Mizukami
Toru Yatsushiro
Application Number:
JP2007055685A
Publication Date:
July 25, 2012
Filing Date:
March 06, 2007
Export Citation:
Assignee:
株式会社リコー
International Classes:
B41M5/26; G11B7/24; G11B7/24024; G11B7/24041; G11B7/244; G11B7/2472; G11B7/254; G11B7/257; G11B7/2578; G11B7/258; G11B7/259
Domestic Patent References:
| JP2000311384A | ||||
| JP2003231359A | ||||
| JP2003303447A | ||||
| JP2005054150A | ||||
| JP2006048892A |
Attorney, Agent or Firm:
Toshio Okamoto
Eiji Tomomatsu
Eiji Tomomatsu