Color imaging process and apparatus

Details Color imaging process and apparatus Color imaging process and apparatus

1991-12-09

1994-05-10

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Color imaging process

Laser or radiation exposure other than visible light

430359, 430357, 430 30, G07C 700

Patent

active

053106288

ABSTRACT:
There is described a process for recording a positive or negative continuous tone color copy having the same or lower contrast than a continuous tone original image, comprising the steps of:
providing a photographic element comprising a support having thereon a silver halide emulsion unit capable of forming a yellow image, a silver halide emulsion unit capable of forming a cyan image, and a silver halide emulsion unit capable of forming a magenta image, each image-forming unit having a maximum spectral sensitivity at a different wavelength of radiation, and at least one of the image-forming units having a gamma as described herein,
receiving image data representing the densities of the yellow, magenta, and cyan records of the original image,
modifying said image data and using it to control three exposure sources, each emitting radiation in the region of maximum spectral sensitivity for a corresponding one of the image-forming units, so that, after exposure, the recorded image density range for at least one of of the yellow, magenta, and cyan image-forming units is substantially the same as or lower than the image density range for the corresponding yellow, magenta, and cyan records, respectively, of said original image, and
exposing said photographic element to said exposure sources.

REFERENCES:
patent: 3937573 (1976-02-01), Rising
patent: 3977872 (1976-08-01), Hellmig
patent: 4058828 (1977-11-01), Ladd
patent: 4104069 (1978-08-01), Vanheerendak er al.
patent: 4259423 (1981-03-01), Merlo
patent: 4272186 (1981-06-01), Plummer
patent: 4416522 (1983-11-01), Webster
patent: 4619892 (1986-10-01), Simpson et al.
patent: 4711838 (1987-12-01), Grzeskowiak et al.
patent: 4731671 (1988-03-01), Alkofer
patent: 4760458 (1988-07-01), Watanabe et al.
patent: 4770978 (1988-09-01), Matsuzaka et al.
patent: 4821113 (1989-04-01), McQuade et al.
patent: 4824770 (1989-04-01), Kitchin et al.
patent: 4943517 (1990-07-01), Powers et al.
patent: 4977521 (1990-12-01), Kaplan
patent: 5051341 (1991-09-01), Muenter et al.
patent: 5061618 (1991-10-01), Parton et al.
patent: 5108882 (1992-04-01), Parton et al.
Jones "Theory of the Photographic Process" .COPYRGT.1977 551-560 & 571-576.
Spencer "The Photographic Journal" .COPYRGT.Sep. 1961 (269) pp. 265-272.
Journal of Imaging Technology, vol. 14, No. 3, Jun. 1988, pp. 78-89.

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