Process for producing stamper of multi-valued ROM disc,...

Details Process for producing stamper of multi-valued ROM disc,... Process for producing stamper of multi-valued ROM disc,...

2011-08-02

2011-08-02

Kelly, Cynthia H (Department: 1722)

Dynamic information storage or retrieval

Storage medium structure

Layered

C430S321000

Reexamination Certificate

active

07990838

ABSTRACT:
The present invention provides a process for producing inexpensively and effectively a stamper utilized for producing multi-valued ROM discs, which comprises:(i) irradiating a light onto a laminate, thereby producing reacted portions within a thermo reactive layer,(ii) maintaining the reacted portions, which are produced by irradiating the light, within the thermo reactive layer,(iii) maintaining an optical absorption layer under the reacted portions,(iv) maintaining a substrate under the reacted portions, and(v) removing the maintained optical absorption layer and the maintained thermo reactive layer,wherein the laminate comprises the optical absorption layer and the thermo reactive layer on the substrate, the optical absorption layer and the thermo reactive layer are disposed adjacently.

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Kuwabara et al. translation 2002.

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