OPTICAL RECORDING MEDIUM AND PRODUCTION METHOD THEREOF

WIPO Patent Application WO/2002/103691

A1

A production method for an optical recording medium, comprising the first step of overlaying on a substrate via uncured ultraviolet curing resin a transfer stamper provided on at least one surface thereof with irregularities serving as transfer information, the second step of transferring the transfer information of the transfer stamper onto the surface of the ultraviolet curing resin, the third step of separating, after curing the ultraviolet curing resin, the transfer stamper at the interface between the transfer stamper and the ultraviolet curing resin, and the fourth step of forming a thin film layer including a recording film on the information−transferred surface of the ultraviolet curing resin, wherein at least one of the weight of the transfer stamper and the viscosity of the ultraviolet curing resin is so determined that the surface roughness of the information−transferred surface of the ultraviolet curing resin is smaller than that of the transfer information−provided surface of the transfer stamper.

TOMIYAMA MORIO (JP)
HISADA KAZUYA (JP)
ITO EIICHI (JP)

PCT/JP2002/005823

December 27, 2002

June 12, 2002

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MATSUSHITA ELECTRIC IND CO LTD (JP)
TOMIYAMA MORIO (JP)
HISADA KAZUYA (JP)
ITO EIICHI (JP)

B29D17/00; G11B7/26; (IPC1-7): G11B7/26

JP2001126322A	2001-05-11
JPH1158401A	1999-03-02
JPH05101445A	1993-04-23
JPH08106656A	1996-04-23
JPH0877621A	1996-03-22

IKEUCHI SATO & PARTNER PATENT ATTORNEYS (OAP TOWER 8-30, Tenmabashi 1-chom, Kita-ku Osaka-shi Osaka, JP)

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