Title:
【発明の名称】光ディスク用基板の製造方法
Document Type and Number:
Japanese Patent JP2955224
Kind Code:
B2
Abstract:
A prescribed molded substrate is molded out of a melted resin with a stamper having projections for forming pits with the shape of the projections preliminarily set to be greater than the shape of pits of the substrate to be molded. The relationship between the height H of the projections for forming the pits to the stamper and the depth d of the molded substrate is such that H/d=1.3 to 1.8.
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Inventors:
SAGARA KOICHI
Application Number:
JP34243895A
Publication Date:
October 04, 1999
Filing Date:
December 28, 1995
Export Citation:
Assignee:
KAO KK
International Classes:
B29D17/00; B82B1/00; G11B7/26; (IPC1-7): G11B7/26
Domestic Patent References:
| JP3108141A | ||||
| JP4146536A | ||||
| JP476836A |
Other References:
【文献】西独国特許出願公開2410740(DE,A1)
【文献】欧州特許出願公開418897(EP,A2)
【文献】米国特許5274623(US,A)
【文献】欧州特許出願公開418897(EP,A2)
【文献】米国特許5274623(US,A)
Attorney, Agent or Firm:
Osamu Hatori (1 person outside)