Recorders – Printing – dotting – or punching marker – Ink transfer support or moving means
Patent
1981-02-03
1983-09-13
Rubinson, G. Z.
Recorders
Printing, dotting, or punching marker
Ink transfer support or moving means
358298, G01D 1514
Patent
active
044045700
ABSTRACT:
A laser recorder device in which many levels of half-tone densities are accurately produced with smooth transitions between areas of different densities. An input signal is sampled with a sampling pulse in response to which digital output values of a predetermined function of the input signal are produced. Pulses are applied to a semiconductor laser beam source with the number and frequency of the pulses during a preset application time being determined in accordance with the magnitude of the input signal.
REFERENCES:
patent: 3725574 (1973-04-01), Gast
patent: 4001492 (1977-01-01), Suzuki et al.
IBM Technical Disclosure Bulletin, vol. 18, No. 3, "Adaptive Contrast Ranging for Images", Wong, Aug. 1975, pp. 914-917.
Ohara Yuji
Ohnishi Masahiro
Oono Hiroshi
Oosaka Shigenori
Brady W. J.
Fuji Photo Film Co. , Ltd.
Rubinson G. Z.
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