Optical recording medium

Details Optical recording medium Optical recording medium

1987-07-08

1989-03-28

Goldberg, E. A.

Recorders

Thermal recording

3461351, G01D 1510

Patent

active

048168416

ABSTRACT:
An optical recording medium which is made up of a plastic substrate having a surface of minute roughened structure and a metal thin film formed on the substrate and is capable of strongly absorbing laser light of a specific wavelength region, thereby writing data on the medium. The optical recording medium is characterized by an intermediate layer interposed between the plastic substrate and the metal thin film, the intermediate layer having a higher melting point or lower thermal conductivity than the metal thin film and having a thinner average thickness than the metal thin film. The optical recording medium has a definite recording threshold value and permits stable recording with a high CNR by using a broadly ranged recording power.

REFERENCES:
patent: 4315269 (1982-02-01), Bloom et al.
patent: 4318112 (1982-03-01), Kivits et al.
patent: 4405706 (1983-09-01), Takahashi et al.
patent: 4578788 (1986-03-01), Ahn et al.

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