Title:
PROCESS FOR PRODUCING CYLINDRICAL RECORDING MEDIUM
Document Type and Number:
WIPO Patent Application WO/2005/086149
Kind Code:
A1
Abstract:
In a core forming process (10), a cylindrical core (200) is made of a shape-memory material. A recording layer (120) and a substrate (110) are formed on the outer circumferential surface of the core (200). Following to formation of the substrate (110), a core removing step (40) is performed wherein the core (200) having shrunk according to the shape memory characteristics is removed by a heat treatment, thereby forming a cylindrical recording medium (100).
Inventors:
IMAI TETSUYA (JP)
OGASAWARA MASAKAZU (JP)
OKANO MAKOTO (JP)
OGASAWARA MASAKAZU (JP)
OKANO MAKOTO (JP)
Application Number:
PCT/JP2005/003472
Publication Date:
September 15, 2005
Filing Date:
March 02, 2005
Export Citation:
Assignee:
PIONEER CORP (JP)
IMAI TETSUYA (JP)
OGASAWARA MASAKAZU (JP)
OKANO MAKOTO (JP)
IMAI TETSUYA (JP)
OGASAWARA MASAKAZU (JP)
OKANO MAKOTO (JP)
International Classes:
G11B5/76; G11B5/84; G11B7/24006; G11B7/26; (IPC1-7): G11B7/26; G11B7/24; G11B5/84; G11B5/76
Foreign References:
| JP2003504780A | 2003-02-04 | |||
| JPS5924440A | 1984-02-08 | |||
| JPS6435724A | 1989-02-06 | |||
| JPS486706A | ||||
| JP2002157731A | 2002-05-31 | |||
| JPS55101166A | 1980-08-01 | |||
| JPS61145746A | 1986-07-03 | |||
| JP2001067664A | 2001-03-16 |
Attorney, Agent or Firm:
Egami, Tatsuo c/o Tokyo, Central Patent Firm (4th Floor Oak Building Kyobashi, 16-10,
Kyobashi 1-chom, Chuou-ku Tokyo 31, JP)
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