Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Two or more radiation-sensitive layers containing other than...
Patent
1994-02-22
1995-05-30
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Two or more radiation-sensitive layers containing other than...
430139, 430504, 430507, 430508, 430510, 430513, 430517, G03C 100, G03C 146, G03C 1825, G03C 513
Patent
active
054200032
ABSTRACT:
A photographic element is disclosed comprised of a support and a sequence of superimposed blue, green and red recording silver halide emulsion layer units that produce images of the same hue upon imagewise exposure and photographic development. A first interlayer unit overlies the emulsion layer unit nearest the support and is capable of transmitting to it imagewise exposing radiation this emulsion layer unit is intended to record. A second interlayer unit underlies the emulsion layer unit farthest from the support and is capable of transmitting to the emulsion layer units lying nearer the support imagewise exposing radiation these emulsion layer units are intended to record. The imagewise exposed photographic element is photographically developed and fixed to produce a silver image in each of the emulsion layer units. After this photographic processing one of the interlayer units is capable of absorbing electromagnetic radiation within at least one wavelength region and emitting within a longer wavelength region, and the remaining of the first and second interlayer units is capable of reflecting or absorbing electromagnetic radiation within at least one wavelength region.
To retrieve image information, the photographic element is scanned utilizing emission from one of the interlayer units to provide a first record of the image information in one of the first and last emulsion layer units and is scanned utilizing reflection or absorption of the remaining interlayer unit to provide a second record of the image information in one other of the emulsion layer units. Additionally, the photographic element is scanned through the first and second interlayer units and all of the emulsion layer units to provide a spectrally undifferentiated third record of the combined images in all of the emulsion layer units. The first, second and third records are compared to obtain separate blue, green and red exposure records.
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Evans Gareth B.
Gasper John
Rider Christopher B.
Simmons Michael J.
Bowers Jr. Charles L.
Eastman Kodak Company
Pasterczyk J.
Thomas Carl O.
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