Title:
OPTICAL RECORDING DISC, ITS MANUFACTURING METHOD AND OPTICAL DATA RECORDING/ REPRODUCING METHOD FOR OPTICAL RECORDING DISC
Document Type and Number:
Japanese Patent JP2004160742
Kind Code:
A
Abstract:
To provide an optical recording disc which has a recording layer containing an organic compound as a principal component and can record/reproduce data with the help of a bluish-purple laser beam with a wavelength of 390 to 420 nm.
The optical recording disc has a recording layer 5 containing an organic compound as a principal component, and the organic compound contains a porphyrin coloring matter as a principal component.
Inventors:
FUKUZAWA SHIGETOSHI
Application Number:
JP2002327258A
Publication Date:
June 10, 2004
Filing Date:
November 11, 2002
Export Citation:
Assignee:
TDK CORP
International Classes:
B41M5/26; C07D487/22; C09B47/00; G11B7/24; G11B7/24035; G11B7/244; G11B7/246; G11B7/248; G11B7/2533; G11B7/2548; G11B7/257; G11B7/26; (IPC1-7): B41M5/26; G11B7/24; G11B7/26
Attorney, Agent or Firm:
Koichi Oishi
Mitsuhiro Washito
Ogata Japanese
Mitsuhiro Washito
Ogata Japanese