Method for laser recording utilizing dynamic preheating

Details Method for laser recording utilizing dynamic preheating Method for laser recording utilizing dynamic preheating

1980-08-21

1983-05-10

Rubinson, G. Z.

Recorders

Performance of multiple functions of steam and gas engines

Pressure responsive element

346 76L, G01D 1514

Patent

active

043832610

ABSTRACT:
An improved method and apparatus for laser recording of information onto a metal film by dynamically heating the film immediately prior to recording. A single track of information is recorded by directing two laser beams onto the film. An unmodulated preheat beam supplies energy to raise the temperature of the metal film to just below that required for recording. A modulated write beam then provides sufficient additional energy to selectively raise the temperature of the film to a necessary level for recording of data.

REFERENCES:
patent: 3902010 (1975-08-01), Goshima
patent: 4053898 (1977-10-01), Hirayama et al.
patent: 4110607 (1978-08-01), Honjo et al.
patent: 4125842 (1978-11-01), Ohnishi et al.
patent: 4253102 (1981-02-01), Kataoka et al.
Proceedings of the Society of Photo-Optical Instrumentation Engineers, vol. 200, pp. 84-88 "Preheat-Aided Laser Recording", M. Goldberg, 1979, 346-76L.

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