Method for recording a color image on a medium and reading an im

Details Method for recording a color image on a medium and reading an im Method for recording a color image on a medium and reading an im

1990-12-27

1993-09-14

Coles, Sr., Edward L.

Facsimile and static presentation processing

Natural color facsimile

Color photography previewer

355 37, 356402, 356443, 250572, G03F 310

Patent

active

052454185

ABSTRACT:
A method is disclosed for recording and reading a color image formed on a receiving medium such as a film coated with a blue metastable colloidal silver. Upon application of heat to selected areas of the coating, the blue silver turns yellow to form an image. In a record mode, a modulated beam from a diode laser is scanned onto the receiving medium to form an image. In a read mode, a diode laser beam containing two different wavelengths of radiation is scanned across an image on the recording medium. In order to detect errors in the image, a detector senses the two wavelengths at each pixel and produces signals indicative of the densities of the yellow and blue in the pixel. Signal processing determines valid data points from the two signals.

REFERENCES:
patent: 4101216 (1978-07-01), Grossmann
patent: 4266872 (1981-05-01), Mitsuhashi
patent: 4652125 (1987-03-01), Bowen et al.
patent: 4666307 (1987-05-01), Matsumoto et al.
patent: 4708459 (1987-11-01), Cowan et al.

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