Optical disk and method for producing the same

Details Optical disk and method for producing the same Optical disk and method for producing the same

2004-08-05

2009-02-10

Aftergut, Jeff H (Department: 1791)

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Light polarizing article or holographic article

C264S106000, C264S107000

Reexamination Certificate

active

07488436

ABSTRACT:
An optical disk is constructed such that a thin film including a reflective layer is formed on a substrate, or on a thermoplastic resin layer on the substrate. A stamper having an asperity pattern corresponding to information signals is directly pressed against the thin film to transfer the asperity pattern on the thin film. Heat-pressing the stamper against the thin film makes it possible to further accurately transfer the asperity of the stamper to the reflective layer with less pressing force, in the case where the reflective layer is formed on the thermoplastic resin layer.

REFERENCES:
patent: 4613949 (1986-09-01), Glover et al.
patent: 6743320 (2004-06-01), Hisada et al.
patent: 60-242352 (1985-12-01), None
patent: H1-138636 (1989-05-01), None
patent: 8-17076 (1996-01-01), None
patent: H8-124224 (1996-05-01), None
Yamamoto, O., “Large-capacity optical disk with one side surface having a capacity of 12 Gbyte”, vol. 20, No. 2, p. 184-185, 1998.

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