Title:
METHOD AND DEVICE FOR SEPARATING STAMPER, AND MULTI-LAYERED RECORDING MEDIUM
Document Type and Number:
WIPO Patent Application WO/2003/096331
Kind Code:
A1
Abstract:
A method and device for separating a disk and a stamper that is formed with a diameter larger than at least the disk and is pasted on the disk through a resin layer so as to cover the surface of the disk. After the disk is fixed, pressing force acting in the direction separating the tamper is applied to any position of the stamper projecting from the outer edge of the disk. After the stamper is started to be separated from the resin layer by the pressing force, pressing force is applied continuously along the periphery of the stamper. When separation of the stamper from the resin layer is carried out along the circumferential direction of the disk, the separation direction substantially matches with an arrangement direction of information pits and a tangential direction of group structures, so that uniform information pits and group structures can be formed on the resin layer.
Inventors:
Kaneko, Yukio c/o TDK Corporation (1-13-1 Nihonbash, Chuo-ku Tokyo, 103-8272, JP)
Murakami, Yoshiaki c/o TDK Corporation (1-13-1 Nihonbash, Chuo-ku Tokyo, 103-8272, JP)
Yamaguchi, Haruhiko c/o TDK Corporation (1-13-1 Nihonbash, Chuo-ku Tokyo, 103-8272, JP)
Tatsumi, Yoshiyuki c/o TDK Corporation (1-13-1 Nihonbash, Chuo-ku Tokyo, 103-8272, JP)
Usami, Mamoru c/o TDK Corporation (1-13-1 Nihonbash, Chuo-ku Tokyo, 103-8272, JP)
Komaki, Tsuyoshi c/o TDK Corporation (1-13-1 Nihonbash, Chuo-ku Tokyo, 103-8272, JP)
Murakami, Yoshiaki c/o TDK Corporation (1-13-1 Nihonbash, Chuo-ku Tokyo, 103-8272, JP)
Yamaguchi, Haruhiko c/o TDK Corporation (1-13-1 Nihonbash, Chuo-ku Tokyo, 103-8272, JP)
Tatsumi, Yoshiyuki c/o TDK Corporation (1-13-1 Nihonbash, Chuo-ku Tokyo, 103-8272, JP)
Usami, Mamoru c/o TDK Corporation (1-13-1 Nihonbash, Chuo-ku Tokyo, 103-8272, JP)
Komaki, Tsuyoshi c/o TDK Corporation (1-13-1 Nihonbash, Chuo-ku Tokyo, 103-8272, JP)
Application Number:
PCT/JP2003/005802
Publication Date:
November 20, 2003
Filing Date:
May 09, 2003
Export Citation:
Assignee:
TDK CORPORATION (1-13-1, Nihonbashi Chuo-ku, Tokyo, 103-8272, JP)
International Classes:
B29C41/42; B29C39/02; B29C39/08; B29C39/36; G11B7/26; B29L17/00; (IPC1-7): G11B7/26; B29C39/08; B29C39/10; B29C39/36
Attorney, Agent or Firm:
Okabe, Masao (No. 602, Fuji Bldg. 2-3, Marunouchi 3-chom, Chiyoda-ku Tokyo, 100-0005, JP)
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