Method of producing optical recording medium

Details Method of producing optical recording medium Method of producing optical recording medium

1984-06-26

1987-04-21

Childs, Sadie L.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

427162, 427164, 427166, 4272481, 427255, B05D 306, B05D 506

Patent

active

046595880

ABSTRACT:
The present invention relates to a method of producing an optical recording medium containing a thin film photosensitive layer provided on a board. When subjected to an optical energy, the optical density of this thin film photosensitive layer varies. Such optical recording medium is formed by the method of (a) mixing tellurium dioxide TeO.sub.2 and a reducing substance or substances, (b) heating the obtained mixture and causing part of the TeO.sub.2 to react with the reducing substance to obtain a sintered body and (c) obtaining a TeO.sub.2 compound thin film photosensitive layer on a board by evaporation and deposition, using the sintered body obtained in steps (a) and (b) as the vacuum deposition source. The optical recording medium possessing such a TeO.sub.2 compound thin film photosensitive layer may be used as both a one-time recording type medium and as an erasable type medium, capable of erasing the previously recorded information and recording new information in its place.

REFERENCES:
patent: 3971874 (1976-07-01), Ohta et al.
patent: 4278734 (1981-07-01), Ohta et al.
patent: 4357366 (1982-11-01), Takaoka et al.
Proceedings of the 1983 Japan Display.
Proceedings of SPIE vol. 329 Optical Disk Technology (1982).
Proceedings of the 28th Joint Assembly of Applied Physics Association, p. 108, 1981.

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