Title:
【発明の名称】低い放射状突起を持つハブなし光ディスクおよびその製造方法
Document Type and Number:
Japanese Patent JP2002514339
Kind Code:
A
Abstract:
A disc molding apparatus for forming an optical disc. The apparatus has a disc substrate cavity and a sprue mechanism in fluid communication with the cavity. A removable stamper located on one side of the disc substrate cavity forms data onto the disc substrate and the stamper is relasibly locked within the apparatus by an inner holder, which includes a locking mechanism. The apparatus also has a mechanism that forms a disc alignment mechanism in the disc substrate wherein the disc alignment mechanism is between the formatted data and a center of the disc substrate and the concentricity of the formatted data is specified relative to the disc alignment mechanism.
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Inventors:
Sandstrom, Chad Earl
Application Number:
JP54425398A
Publication Date:
May 14, 2002
Filing Date:
April 16, 1998
Export Citation:
Assignee:
Imation Corp.
International Classes:
B29C45/26; B29D17/00; G11B7/004; G11B7/24; G11B7/26; G11B17/022; G11B23/00; G11B7/095; (IPC1-7): G11B7/24; G11B7/004; G11B17/022; G11B23/00
Attorney, Agent or Firm:
Aoyama Ryo (1 person outside)