Optical recording medium and method manufacturing thereof

Details Optical recording medium and method manufacturing thereof Optical recording medium and method manufacturing thereof

1986-12-29

1990-08-21

Ryan, Patrick

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428 65, 428402, 428418, 428689, 428913, 430945, 3461351, 369284, 369288, B32B 300

Patent

active

049505203

ABSTRACT:
An optical disk and method of preparing it in which a macromolecular substrate has information bits mechanically formed on its surface and a reflective metallic reflective film is deposited thereover. The grain size of the metallic reflective film is kept to less than 50 nanometers by depositing at a rate of no more than 1.5 nanometers per second.

REFERENCES:
patent: 4353977 (1982-10-01), Gerber et al.
patent: 4441179 (1984-04-01), Slater
patent: 4587533 (1986-05-01), Nakane et al.
patent: 4668549 (1987-05-01), Lippits et al.
patent: 4670332 (1987-06-01), Werner et al.

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