Process for producing optical disk

Details Process for producing optical disk Process for producing optical disk

1996-04-09

1998-10-13

Loney, Donald

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

264 131, 264 25, 264219, B29D 1100

Patent

active

058207937

ABSTRACT:
A molded article having a predetermined shape transferred from a mold, characterized by being provided with an informative mark corresponding to the number of times of use of the mold, and a process for producing the molded article including a molding step of transferring a predetermined shape of a mold to a molded article, the molding step comprising an engraving step of engraving an informative mark indicative of the number of times of use of the mold on the mold before the mold is used and an informative mark transfer step of transferring the informative mark to the molded article.

REFERENCES:
patent: 4379687 (1983-04-01), Wilson et al.
patent: 4944982 (1990-07-01), Kikuchi
patent: 4954065 (1990-09-01), Shindo et al.
patent: 5057000 (1991-10-01), Mangone

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