Optical disk structure, method of manufacturing the same, and ap

Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor

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156277, 156292, 156580, 156581, 369286, B32B 3104

Patent

active

06019863&

ABSTRACT:
Indication members provided around a central hole in a disk does not adversely affect reference surfaces to be clamped, and clear, stable indication is maintained. For this purpose, first and second optical disks having annular light transmissive disk substrates with a common central hole, one surface of each of which light transmissive disk substrates is provided with a reflection film, are attached to each other as one body with an adhesive layer interposed therebetween, such that the reflection films opposed each other, thereby forming a compound optical disk. Label members are provided from the reflection film side by printing or attachment on flat portions surrounding the central hole.

REFERENCES:
patent: 4972404 (1990-11-01), Yamaguchi
patent: 5146438 (1992-09-01), Harper
patent: 5284538 (1994-02-01), Suzuki et al.
patent: 5346654 (1994-09-01), Kodaka
patent: 5582677 (1996-12-01), Miwa et al.

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