OPTICAL RECORDING SUBSTRATE, OPTICAL RECORDING MEDIUM, AND MANUFACTURING METHOD THEREOF

Title:

OPTICAL RECORDING SUBSTRATE, OPTICAL RECORDING MEDIUM, AND MANUFACTURING METHOD THEREOF

Document Type and Number:

WIPO Patent Application WO/2003/030160

Kind Code:

A1

Abstract:

A method for manufacturing an optical recording substrate in which an uneven and&sol or grooved surface of a stamper is brought into contact under a reduced pressure with an organic polymer sheet having the glass transition temperature between 120ºC and 190ºC, the double refraction retardation of the single path between &plus 10 nm and −10 nm, and the thickness of 0.35 mm or under, and heated and pressed thereon. According to this method, it is possible to produce an optical recording substrate capable of easily transferring stamper pattern to the thin organic polymer sheet without fail.

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Inventors:

Suzuki, Kazutomi (82-1, Oaza Tomondou Miyake-ch, Shiki-gun Nara, 636-0213, JP)
Tomie, Takashi (Windyhills 202, 8-18-6 Yurinokida, Yachiyo-shi Chiba, 276-0042, JP)
Takizawa, Kiyoto c/o Nissei Plastic Industrial (Co. Ltd., 2110, Oaza Minamijo, Sakakimach, Hanishina-gun Nagano, 389-0603, JP)
Kubota, Suinobu c/o Nissei Plastic Industrial (Co. Ltd., 2110, Oaza Minamijo, Sakakimach, Hanishina-gun Nagano, 389-0603, JP)

Application Number:

PCT/JP2002/009621

Publication Date:

April 10, 2003

Filing Date:

September 19, 2002

Export Citation:

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Assignee:

TEIJIN LIMITED (6-7 Minamihommachi 1-chome, Chuo-ku Osaka-shi, Osaka, 541-0054, JP)
NISSEI PLASTIC INDUSTRIAL CO., LTD. (2110, Oaza Minamijo Sakakimach, Hanishina-gun Nagano, 389-0603, JP)
Suzuki, Kazutomi (82-1, Oaza Tomondou Miyake-ch, Shiki-gun Nara, 636-0213, JP)
Tomie, Takashi (Windyhills 202, 8-18-6 Yurinokida, Yachiyo-shi Chiba, 276-0042, JP)
Takizawa, Kiyoto c/o Nissei Plastic Industrial (Co. Ltd., 2110, Oaza Minamijo, Sakakimach, Hanishina-gun Nagano, 389-0603, JP)
Kubota, Suinobu c/o Nissei Plastic Industrial (Co. Ltd., 2110, Oaza Minamijo, Sakakimach, Hanishina-gun Nagano, 389-0603, JP)

International Classes:

B29C43/02; B29C43/36; B29D17/00; G11B7/24; G11B7/26; B29C47/00; (IPC1-7): G11B7/26; G11B7/24

Attorney, Agent or Firm:

Ohshima, Masataka (Ohshima Patent Office, Fukuya Bldg. 3, Yotsuya 4-chom, Shinjuku-ku Tokyo, 160-0004, JP)

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