摘要:
A silver halide photographic emulsion containing at least one of the compounds of formula (I) and at least one of the compounds of formula (III), or further containing at least one of the compounds of formula (II) besides the above at least two compounds: General formula (I) General formula (II) General formula (III) wherein R 0 , R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 and R 11 each represent various groups; X 1 ⊖, X 2 ⊖ and X 3 ⊖ each represent counter anions; ℓ, m and n are each 0 or 1; Z 1 and Z 2 each represent nonmetal atomic groups necessary for forming unsubstituted or substituted benzene rings, or unsubstituted or substituted naphthalene rings; and Z 3 and Z 4 each represent nonmetal atomic groups necessary for forming unsubstituted or substituted naphtalene rings. The silver halide photographic emulsions are enhanced in spectral sensitivity of green wavelength region, and photographic light-sensitive materials prepared using these emulsions are not only enhanced in spectral sensitivity of green short wavelength region, but also excellent in inhibiting fog increase and sensitivity lowering during preservation.
摘要:
A process for processing a silver halide black and white photographic material, which comprises processing, after imagewise exposing, a silver halide black and white photographic material spectrally sensitized by a sensitizing dye with a processing solution containing at least one compound satisfying the following condition 1 and/or a salt thereof in an amount of at least 5×10 -5 mol/liter; Condition 1: when 4 ml of an aqueous solution of 8.0×10 -2 mol/liter of the compound is added to a mixture of 2 ml of an aqueous solution of 4.0×10 -4 mol/liter of anhydro-5,5'-dichloro-9-ethyl-3,3'-bis(3-sulfopropyl)thiacarbocyanine hydroxide'pyridinium salt and 1 ml of an aqueous solution of 1.0×10 -1 mol/liter of potassium chloride and the resultant solution is diluted with water to 10 ml, the molecular extinction coefficient of the aqueous solution at 624 nm is not higher than 1.0×10 5 .
摘要:
A process for processing a silver halide black and white photographic material, which comprises processing, after imagewise exposing, a silver halide black and white photographic material spectrally sensitized by a sensitizing dye with a processing solution containing at least one compound satisfying the following condition 1 and/or a salt thereof in an amount of at least 5×10 -5 mol/liter; Condition 1: when 4 ml of an aqueous solution of 8.0×10 -2 mol/liter of the compound is added to a mixture of 2 ml of an aqueous solution of 4.0×10 -4 mol/liter of anhydro-5,5'-dichloro-9-ethyl-3,3'-bis(3-sulfopropyl)thiacarbocyanine hydroxide'pyridinium salt and 1 ml of an aqueous solution of 1.0×10 -1 mol/liter of potassium chloride and the resultant solution is diluted with water to 10 ml, the molecular extinction coefficient of the aqueous solution at 624 nm is not higher than 1.0×10 5 .
摘要:
A silver halide photographic emulsion containing at least one of the compounds of formula (I) and at least one of the compounds of formula (III), or further containing at least one of the compounds of formula (II) besides the above at least two compounds:
General formula (I)
General formula (II)
General formula (III) wherein R 0 , R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 and R 11 each represent various groups; X 1 ⊖, X 2 ⊖ and X 3 ⊖ each represent counter anions; ℓ, m and n are each 0 or 1; Z 1 and Z 2 each represent nonmetal atomic groups necessary for forming unsubstituted or substituted benzene rings, or unsubstituted or substituted naphthalene rings; and Z 3 and Z 4 each represent nonmetal atomic groups necessary for forming unsubstituted or substituted naphtalene rings.
The silver halide photographic emulsions are enhanced in spectral sensitivity of green wavelength region, and photographic light-sensitive materials prepared using these emulsions are not only enhanced in spectral sensitivity of green short wavelength region, but also excellent in inhibiting fog increase and sensitivity lowering during preservation.