Method for manufacturing optical type recording medium

Details Method for manufacturing optical type recording medium Method for manufacturing optical type recording medium

1983-03-08

1984-10-23

Czaja, Donald

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Utilizing plasma, electric, electromagnetic, particulate, or...

264106, 264107, B29D 1700

Patent

active

044787685

ABSTRACT:
A specific laser-sensitive layer is formed on a substrate so as to manufacture an original disk. The laser-sensitive layer absorbs energy from a laser beam and locally expands and deforms. The laser beam which has a predetermined beam energy to indicate pretrack information for, for example, a self-write/read type optical disk, is used to irradiate the laser-sensitive layer. A spiral projected pattern is locally formed on the laser-sensitive layer, such that a gas is discharged from laser-incident portion which then expands and deforms. A structure so obtained is used as an original disk.

REFERENCES:
patent: 4141731 (1979-02-01), Jarsen
patent: 4188240 (1980-02-01), Yoshio
"Optical Disk Systems Emerge" IEEE Spectrum, vol. 15, No. 8, pp. 20-28, Aug. 1978, Bartolini et al.

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