Silver halide emulsion and silver halide photographic...

Details Silver halide emulsion and silver halide photographic... Silver halide emulsion and silver halide photographic...

2007-12-04

2007-12-04

Visconti, Geraldina (Department: 1752)

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

C430S599000, C430S607000, C430S603000, C430S550000, C430S567000

Reexamination Certificate

active

11356009

ABSTRACT:
A silver halide emulsion, which is chemically sensitized by a compound of formula (1):wherein Ch represents a sulfur, selenium, or tellurium atom; X1represents NR1or N+(R2)R3Y−; R1represents a hydrogen atom or a substituent; R2and R3each represent an alkyl group or another substituent; Y−represents an anionic ion; X2represents OR4, N(R5)R6, or another substituent; R4to R6each represent a hydrogen atom or a substituent; and E is a group selected from groups represented by formula (2) to (5):wherein, in formulas (2) to (5), Z represents a hydrogen atom or a substituent; A1and A2each represent an oxygen atom, etc.; and R10to R16each represent a hydrogen atom or a substituent; W represents a substituent; n is an integer from 0 to 4; L represents a divalent linking group; and EWG represents an electron withdrawing group.

REFERENCES:
patent: 4116697 (1978-09-01), Bigelow
patent: 5342750 (1994-08-01), Sasaki et al.
patent: 2005/0048424 (2005-03-01), Suzuki et al.
patent: 6-317867 (1994-11-01), None
patent: 7-140579 (1995-06-01), None
patent: 7-301880 (1995-11-01), None
patent: 10-186563 (1998-07-01), None

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