Photographic material with increased exposure latitude

Details Photographic material with increased exposure latitude Photographic material with increased exposure latitude

1988-08-15

1990-08-07

Michl, Paul R.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Two or more radiation-sensitive layers containing other than...

430505, G03C 146, G03C 720

Patent

active

049467654

ABSTRACT:
There is described a photographic element in which increased exposure latitude is obtained by having a dye-forming coupler in a non-light-sensitive interlayer between two light-sensitive silver halide emulsion layers. One of the silver halide emulsion layers is sensitive to a first region of the spectrum and contains a dye-forming coupler that forms a dye complementary in color to the region of the spectrum to which that layer is sensitive. The second emulsion layer is sensitive to a second region of the spectrum and contains a second coupler that forms a dye complementary to the second region of the visible spectrum. The exposure latitude in the layer sensitive to the first region of the spectrum is increased when the coupler in the interlayer forms a dye complementary in color to the second region of the spectrum, but as a function of development in the first region of the spectrum.

REFERENCES:
patent: 4141730 (1979-02-01), Minagawa et al.
patent: 4173479 (1979-11-01), Ranz et al.
patent: 4186011 (1980-01-01), Lohmann et al.
patent: 4359521 (1982-11-01), Fryberg et al.
patent: 4542091 (1985-09-01), Sasaki et al.
patent: 4806460 (1989-02-01), Ogawa et al.
patent: 4902609 (1990-02-01), Hahm

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