Method of producing optical recording medium by transfer...

Dynamic optical information storage or retrieval – Optical storage medium structure

Reexamination Certificate

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C428S064400

Reexamination Certificate

active

07051347

ABSTRACT:
A method for producing an optical recording medium of the present invention including a first laminating step, a second transferring step, a third detaching step, and a fourth forming step. The first step includes laminating a substrate and a transfer stamper with an uncured ultraviolet-curable resin interposed therebetween. The transfer stamper has recesses/projections that provide information to be transferred. The second step includes transferring the information to be transferred of the transfer stamper onto a surface of the ultraviolet-curable resin. The third step includes detaching the transfer stamper from the ultraviolet-curable resin at an interface therebetween after the ultraviolet-curable resin is cured. The fourth step includes forming a thin film layer on the information-transferred surface of the ultraviolet-curable resin. The thin film layer includes either a recording film or a reflection film. The method requires that either a weight of the transfer stamper or a viscosity of the ultraviolet-curable resin is set so that a surface roughness of the information-transferred surface of the ultraviolet-curable resin is smaller than a surface roughness of the surface of the transfer stamper on which the information to be transferred is provided.

REFERENCES:
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patent: 9-115191 (1995-10-01), None
patent: 8-77621 (1996-03-01), None
patent: 8-106656 (1996-04-01), None
patent: 11-58401 (1997-08-01), None
patent: 2001-126322 (1999-10-01), None

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