Photographic element comprising a mixture of sensitizing dyes

Details Photographic element comprising a mixture of sensitizing dyes Photographic element comprising a mixture of sensitizing dyes

1998-09-10

2000-12-12

Chea, Thorl

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430572, 430583, G03C 116, G03C 129

Patent

active

061596787

ABSTRACT:
A photographic element comprising at least one silver halide emulsion layer in which the silver halide has been sensitized with a first blue sensitizing dye having a .lambda..sub.1 less than or equal to about 475 nm and a second blue sensitizing dye having a .lambda..sub.2, wherein .lambda..sub.1 is longer than .lambda..sub.2 and .lambda..sub.1 and .lambda..sub.2 are separated by an energy gap, .DELTA.E, which does not exceed 0.12 eV, where .DELTA.E is defined by the following relationship: ##EQU1## wherein .lambda..sub.1 is the wavelength in nanometers (nm) of maximum absorption of a silver halide emulsion sensitized with the first dye and .lambda..sub.2 is the wavelength of maximum absorption of a silver halide emulsion sensitized with the second dye, with the proviso that neither the first nor the second dye contains selenium.

REFERENCES:
patent: 3672898 (1972-06-01), Schwan et al.
patent: 3985563 (1976-10-01), Hinata et al.
patent: 3986878 (1976-10-01), Hinata et al.
patent: 3988155 (1976-10-01), Hinata et al.
patent: 4232118 (1980-11-01), Okauchi et al.
patent: 4439520 (1984-03-01), Kofron et al.
patent: 4469785 (1984-09-01), Tanaka et al.
patent: 4518689 (1985-05-01), Noguchi et al.
patent: 4925780 (1990-05-01), Yoshizawa et al.
patent: 4939078 (1990-07-01), Kuramoto et al.
patent: 5013642 (1991-05-01), Muenter et al.
patent: 5047311 (1991-09-01), Endo et al.
patent: 5049485 (1991-09-01), Deaton
patent: 5368996 (1994-11-01), Asami
patent: 5418126 (1995-05-01), Stegman et al.
patent: 5418127 (1995-05-01), Budz et al.
patent: 5474887 (1995-12-01), Reed et al.
patent: 5538836 (1996-07-01), Ueda et al.
patent: 5582960 (1996-12-01), Nielsen et al.
Research Disclosure No. 36216, Jun. 1994, No. 362, Emsworth, GB.
The Theory of the Photographic Process, T.H. James, ed., 4th edition, Macmillan, New York 1977.
Y. Yonezawa, T. Miyama, and H Ishizawa, J. Imaging Sci. Technol., 39 331 (1995);.
V. Bliznyuk and H. Mohwald, Thin Solid Films, 261 275 (1995);.
.L. Penner and D. Mobius, Thin Solid Films, 132 185 (1985).
G. Scheibe, A. Mareis, H. Ecker, Naturwiss, 29 474(1937).

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