Title:
OPTICAL RECORDING MEDIUM
Document Type and Number:
Japanese Patent JP3724531
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an optical recording medium having excellent recording and reproducing characteristics and light resistance in a wavelength selected from 600 to 700 nm by using cyanine dye.
SOLUTION: The optical recording medium comprises a recording layer containing at least trimethinecyanine dye and azo metal complex dye so that the trimethinecyanine dye and azo metal complex dye are contained at 10:3 to 1:6 by molar ratio. In this case, an absorption maximum of a longest wavelength side of absorption maximum in the case that molar extinction coefficient of solution of the azo metal complex dye is 30,000 or more is located at 0 to 50 nm of short wavelength side of an absorption wavelength as compared with the trimethinecyanine dye.
Inventors:
Kobe Emiko
Atsushi Kadota
Masahiro Shinkai
Atsushi Kadota
Masahiro Shinkai
Application Number:
JP20519797A
Publication Date:
December 07, 2005
Filing Date:
July 15, 1997
Export Citation:
Assignee:
tdk Corporation
International Classes:
B41M5/26; C09B23/00; G11B7/24062; G11B7/244; G11B7/2467; G11B7/2472; G11B7/249; (IPC1-7): B41M5/26; C09B23/00; G11B7/24
Domestic Patent References:
| JP8332772A | ||||
| JP9193545A | ||||
| JP4308791A |
Foreign References:
| WO1991189250A1 |
Attorney, Agent or Firm:
Yoshiki Hasegawa
Shiro Terasaki
Hiroaki Aoki
Shiro Terasaki
Hiroaki Aoki
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