Ablatable medium for optical recording

Details Ablatable medium for optical recording Ablatable medium for optical recording

1978-01-30

1980-08-19

Hartary, Joseph W.

Recorders

Record receivers and/or driving means therefor

Laminated, impregnated, or coated bases

8467, 346 76L, 430945, G01D 1534

Patent

active

042186897

ABSTRACT:
An ablative recording medium comprises a substrate coated with a light reflecting layer which in turn is coated with a light absorptive layer of 6,6'-diethoxythioindigo. During recording, portions of the light absorptive layer are ablated by a modulated focussed light beam, thereby exposing portions of the reflecting layer. Video information is recorded as a reflective-antireflective pattern.

REFERENCES:
patent: 2403226 (1946-07-01), Lecher
patent: 2475821 (1949-07-01), Cullinan
patent: 3715212 (1973-02-01), Ross
patent: 3978247 (1976-08-01), Braudy
patent: 4023185 (1977-05-01), Bloom
patent: 4032691 (1977-06-01), Kido
patent: 4069487 (1978-01-01), Kasai
patent: 4097895 (1978-06-01), Spong
patent: 4101907 (1978-07-01), Bell
Bartolini et al; Review and Analysis of Optical Recording Media; Optical Engineering, vol. 15, No. 2, Mar.-Apr. 1976, pp. 99-108.

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