Title:
【発明の名称】射出成形用スタンパ
Document Type and Number:
Japanese Patent JP2519985
Kind Code:
B2
Abstract:
A stamper (30) for injection-molding a plastic substrate for an optical disk characterized in that a rear surface of the stamper has a surface roughness between 0.3 to 2.0 S.
Inventors:
OKABAYASHI TOKUO
KAWASAKI MOTOHIRO
TAKAHASHI ICHIJI
KAWASAKI MOTOHIRO
TAKAHASHI ICHIJI
Application Number:
JP21146388A
Publication Date:
July 31, 1996
Filing Date:
August 25, 1988
Export Citation:
Assignee:
DAICEL CHEM
International Classes:
B29C45/26; B29C45/37; B29D17/00; G11B7/26; B29L17/00; (IPC1-7): G11B7/26