Title:
INFORMATION RECORDING MEDIUM AND METHOD FOR MANUFACTURING THE SAME
Document Type and Number:
WIPO Patent Application WO/2000/054982
Kind Code:
A1
Abstract:
An information recording medium having such a recording material layer on a substrate where reversible phase transition between electrically or optically detectable states can be caused by electric energy or electromagnetic energy. The recording material forming the recording layer is either a material having a crystal structure including lattice defects in one phase of the reversible phase transition or a material having a complex phase composed of a crystal portion including a lattice defect in one phase of the reversible phase transition and an amorphous portion. Both portions contain a common element. A part of the lattice defects are filled with an element other than the element constituting the crystal structure. The recording medium having a recording thin film exhibits little variation of the recording and reproduction characteristics even after repetition of recording and reproduction excellent weatherability, strong resistance against composition variation, and easily controllable characteristics.
Inventors:
YAMADA NOBORU (JP)
KOJIMA RIE (JP)
MATSUNAGA TOSHIYUKI (JP)
KAWAHARA KATSUMI (JP)
KOJIMA RIE (JP)
MATSUNAGA TOSHIYUKI (JP)
KAWAHARA KATSUMI (JP)
Application Number:
PCT/JP2000/001489
Publication Date:
September 21, 2000
Filing Date:
March 10, 2000
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
YAMADA NOBORU (JP)
KOJIMA RIE (JP)
MATSUNAGA TOSHIYUKI (JP)
KAWAHARA KATSUMI (JP)
YAMADA NOBORU (JP)
KOJIMA RIE (JP)
MATSUNAGA TOSHIYUKI (JP)
KAWAHARA KATSUMI (JP)
International Classes:
G03G5/02; G11B7/26; G11B9/00; G11B7/2433; G11B9/08; G11B11/00; G11B11/08; G11B11/12; G11B13/00; G11C16/02; G11B9/04; H01L45/00; (IPC1-7): B41M5/26; G11B7/24; G11B7/26; G11B9/04
Foreign References:
| EP0387898A2 | 1990-09-19 | |||
| JPH05229258A | 1993-09-07 | |||
| JPH0469282A | 1992-03-04 | |||
| JPH0342276A | 1991-02-22 | |||
| US5254832A | 1993-10-19 | |||
| JPH01277338A | 1989-11-07 | |||
| US4670345A | 1987-06-02 | |||
| EP0898273A2 | 1999-02-24 | |||
| JPH0376684A | 1991-04-02 | |||
| JPH06171234A | 1994-06-21 | |||
| EP0874361A2 | 1998-10-28 |
Other References:
See also references of EP 1170147A4
Attorney, Agent or Firm:
Ikeuchi, Hiroyuki (Suite 401 3-25 Nishitenma 4-chome Kita-ku, Osaka-shi Osaka, JP)
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