Title:
INFORMATION RECORDING MEDIUM, REPRODUCING METHOD AND RECORDING METHOD
Document Type and Number:
Japanese Patent JP2007035222
Kind Code:
A
Abstract:
To provide an information recording medium having a sufficient reproduction durability, to provide a reproducing method and to provide a recording method.
The information recording medium is provided with at least a substrate (10) and a recording film (12) and has concentric or spiral grooves on the substrate (10). The recording film (12) is made of a dye having 0.1 to 1% change ratio of a signal level in reproduction of 1,000 times in a prescribed power.
Inventors:
UMEZAWA KAZUYO
MORITA SEIJI
TAKAZAWA KOJI
ANDO HIDEO
ODERA YASUAKI
MORISHITA NAOKI
MORITA SEIJI
TAKAZAWA KOJI
ANDO HIDEO
ODERA YASUAKI
MORISHITA NAOKI
Application Number:
JP2005221097A
Publication Date:
February 08, 2007
Filing Date:
July 29, 2005
Export Citation:
Assignee:
TOSHIBA CORP
International Classes:
G11B7/005; G11B7/24035; G11B7/244; G11B7/246; G11B7/2495
Domestic Patent References:
| JPH05109116A | 1993-04-30 | |||
| JPH08127174A | 1996-05-21 | |||
| JPH10112064A | 1998-04-28 | |||
| JP2003006941A | 2003-01-10 | |||
| JP2004098542A | 2004-04-02 |
Attorney, Agent or Firm:
Takehiko Suzue
Satoshi Kono
Makoto Nakamura
Kurata Masatoshi
Takashi Mine
Yoshihiro Fukuhara
Sadao Muramatsu
Ryo Hashimoto
Satoshi Kono
Makoto Nakamura
Kurata Masatoshi
Takashi Mine
Yoshihiro Fukuhara
Sadao Muramatsu
Ryo Hashimoto