Method for manufacturing bubble-mode optical recording media

Details Method for manufacturing bubble-mode optical recording media Method for manufacturing bubble-mode optical recording media

1986-09-30

1988-07-12

Niebling, John F.

Chemistry: electrical and wave energy

Processes and products

Coating, forming or etching by sputtering

20419215, 430270, C23C 1434

Patent

active

047568119

ABSTRACT:
There is disclosed a method for manufacturing a bubble-mode optical disk having a recording layer made of a mixture of an indium oxide matrix containing indium clusters and organic clusters. The indium clusters absorb an energy of incident laser beam to heat the organic clusters which then release a gas component such that the matrix is locally deformed to form a protuberance. A plasma sputtering is used to deposit the recording layer on a disk substrate placed in a sputtering chamber. A target body used is made of indium. A low-pressure gaseous atmosphere in the chamber includes a methane series hydrocarbon gas and an oxygen gas. The gaseous atmosphere may include a hydrogen gas or a nitrogen gas.

REFERENCES:
patent: 4499178 (1985-02-01), Wada et al.
patent: 4565772 (1986-01-01), Takeoka et al.
patent: 4579807 (1986-04-01), Blonder et al.
patent: 4647947 (1987-03-01), Takeoka et al.

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