Recording structure for direct read after write recording

Details Recording structure for direct read after write recording Recording structure for direct read after write recording

1981-04-06

1983-04-05

Hartary, Joseph W.

Recorders

Performance of multiple functions of steam and gas engines

Pressure responsive element

346 76L, 3461351, 430945, G01D 1534

Patent

active

043792995

ABSTRACT:
An information recording medium uses a semiconductor film on a plastic substrate for obtaining a direct read after write digital recording with laser recording and writing devices. The writing laser produces an area of generated heat in the semiconductor film which produces a heated region in the underlying plastic substrate. The heated plastic substrate material decomposes or degases yielding gaseous components with a high pressure that will burst the overlying semiconductor layer leaving a pit or hole in the reflective surface.

REFERENCES:
patent: 4158715 (1979-06-01), Smith
patent: 4176277 (1979-11-01), Bricot
patent: 4214249 (1980-07-01), Kasai
patent: 4238803 (1980-12-01), Terao
patent: 4264911 (1981-04-01), Wilkinson
patent: 4278734 (1981-07-01), Ohta
patent: 4318112 (1982-03-01), Kivits

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