Title:
OPTIAL INFORMATION RECORDING MEDIUM AND PRODUCTION METHOD THEREFOR, PRODUCTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2004/036570
Kind Code:
A1
Abstract:
An optical information recording medium comprising a signal substrate having a signal surface formed on at least one surface thereof and a center hole, a center substrate disposed so as to be flush with the signal surface of the signal substrate and close the center hole, and a transparent layer formed on the signal surface of the signal substrate so as to include at least part of the center substrate, characterized in that the center substrate has a clamping means; and a production method for the optical information recording medium.
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Inventors:
TOMIYAMA MORIO (JP)
ITO EIICHI (JP)
ITO EIICHI (JP)
Application Number:
PCT/JP2003/012393
Publication Date:
April 29, 2004
Filing Date:
September 29, 2003
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
TOMIYAMA MORIO (JP)
ITO EIICHI (JP)
TOMIYAMA MORIO (JP)
ITO EIICHI (JP)
International Classes:
G11B7/24; G11B7/24062; G11B7/24097; G11B7/26; G11B23/00; (IPC1-7): G11B7/24; G11B7/26
Domestic Patent References:
| WO2001059781A1 | 2001-08-16 |
Foreign References:
| JPH10289489A | 1998-10-27 | |||
| JPS6417231A | 1989-01-20 | |||
| JPH04103365U | 1992-09-07 | |||
| JPH10275366A | 1998-10-13 | |||
| JPH07302439A | 1995-11-14 | |||
| JPH01211342A | 1989-08-24 | |||
| JPS63136373A | 1988-06-08 |
Attorney, Agent or Firm:
Kawamiya, Osamu (IMP Building 3-7, Shiromi 1-chome, Chuo-k, Osaka-shi Osaka, JP)
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