摘要:
A silver halide photographic emulsion which contains at least one of the compounds represented by the following general formula (I) each having a maximum value of spectral sensitivity in a wavelength of 520 nm or more and less than 545 nm, as a sensitizing dye. ##STR1## wherein R.sub.0 and R.sub.1 may be the same or different, and represent hydrogen atoms, unsubstituted or substituted alkyl groups, unsubstituted or substituted aryl groups, unsubstituted or substituted alkoxy groups, unsubstituted or substituted aryloxy groups, halogen atoms, unsubstituted or substituted alkoxycarbonyl groups, unsubstituted or substituted acylamino groups, unsubstituted or substituted acyl groups, cyano groups, unsubstituted or substituted carbamoyl groups, unsubstituted or substituted sulfamoyl groups, carboxyl groups, or unsubstituted or substituted acyloxy groups, provided that R.sub.0 and R.sub.1 do not represent hydrogen atoms at the same time; R.sub.2 represents a hydrogen atom, an unsubstituted or substituted alkyl group, or an unsubstituted or substituted aryl group; R.sub.3 represents an unsubstituted or substituted alkyl group, an unsubstituted or substituted aryl group, an unsubstituted or substituted alkoxy group, an unsubstituted or substituted aryloxy group, an unsubstituted or substituted acyl group, an unsubstituted or substituted acyloxy group, an unsubstituted or substituted alkoxycarbonyl, or an unsubstituted or substituted acylamino group, and furthermore B is a substituent having such L and B that S value is 544 or less in the equation of S=3.536L-2.661B+535.4 wherein L represents a parameter of STERIMOL, and B represents the smaller value among B.sub.1 +B.sub.3 which are parameters of STERIMOL, provided that R.sub.0 and R.sub.3, or R.sub.1 and R.sub.3 do not represent unsubstituted or substituted aryl groups at the same time; R.sub.4 and R.sub.5 may be the same or different and represent unsubstituted or substituted alkyl groups; X represents a counter anion; and n is 0 or 1, and when an inner salt is formed, n is 0.Stability in preservation after application is improved.
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: ##STR1## wherein R.sub.0, R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.9, R.sub.10 and R.sub.11 each represent various groups; X.sub.1.sup..crclbar., X.sub.2.sup..crclbar. and X.sub.3.sup..crclbar. each represent counter anions; l, m and n are each 0 or 1; Z.sub.1 and Z.sub.2 each represent nonmetal atomic groups necessary for forming unsubstituted or substituted benzene rings, or unsubstituted or substituted naphthalene rings; and Z.sub.3 and Z.sub.4 each represent nonmetal atomic groups necessary for forming unsubstituted or substituted naphthalene rings.The silver halide photographic emulsions are enhanced in spectral light-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 silver halide photographic emulsion which contains at least one of the compounds represented by the following general formula (I), and at least one compound selected from the group consisting of the compounds represented by the general formula (II) and the compounds represented by the general formula (III): General formula (I) ##STR1## wherein R.sub.0 and R.sub.1 may be the same or different, and represent hydrogen atoms, alkyl, aryl, alkoxy, aryloxy groups, halogen atoms, alkoxycarbonyl, acylamino, acyl, cyano carbamoyl, sulfamoyl, carboxyl, or acyloxy groups under the condition that R.sub.0 and R.sub.1 do not represent hydrogen atoms at the same time; R.sub.2 represents a hydrogen atom, alkyl, or aryl, R.sub.3 represents alkyl, aryl, alkoxy, aryloxy, acyl, acyloxy, alkoxycarbonyl, or acylamino group and moreover R.sub.3 is required to be a substituent having such L and B that S value is 544 or less in the equation ofS=3.536L-2.661B+535.4wherein L (its unit is .ANG.) represents "L" as a STERIMOL parameter, and B (its unit is .ANG.) represents the smaller value among B.sub.1 +B.sub.4 and B.sub.2 +B.sub.3 which are STERIMOL parameters, under the condition that R.sub.1 and R.sub.3, or R.sub.0 and R.sub.3 do not represent aryl groups at the same time; R.sub.4 and R.sub.5 may be the same, and represent alkyl groups; X.sub.1.sup..crclbar. represents a counter anion; and l is 0 or 1, and when an inner salt is formed, l is 0; General formula (II) ##STR2## wherein Z.sub.1 and Z.sub.2 may be the same or different, and represent nonmetal atomic groups necessary for forming benzene rings, or naphthalene rings under the condition that Z.sub.1 and Z.sub.2 do not form naphthalene rings at the same time, and under the further condition that when Z.sub.1 and/or Z.sub.2 represent benzene rings having a substituent, the substituent does not represent a substituent defined as R.sub.3 ; R.sub.7 has the same significance with R.sub.2 ; R.sub.6 and R.sub.8 have the same significances with R.sub.4 and R.sub.5 respectively; X.sub.2.sup..crclbar. has the same significance with X.sub.1.sup..crclbar. ; and n has the same significance with l; General formula (III) ##STR3## wherein Z.sub.3 and Z.sub.4 may be the same or different, and represent nonmetal atomic groups necessary for forming benzene rings; Y represents a sulfur atom or a selenium atom; R.sub.9 and R.sub.11 have the same significances with R.sub.4 and R.sub.5 respectively; R.sub.10 has the same significance with R.sub.2 ; X.sub.3.sup..crclbar. has the same significance with X.sub.1.sup..crclbar., and n has the same significance with l.Photographic light-sensitive materials which have been coated with this emulsion have elevated spectral sensitivities in green short wavelength region and excellent preservabilities and stabilities.
摘要:
Disclosed is a silver halide photographic material comprising a compound represented by the general formula (I), (II), or a salt thereof or a compound represented by the general formula (III), with these groups being defined as in the specification: ##STR1## also disclosed is a method for the processing of a silver halide photographic material, which comprises processing a silver halide photographic material in the presence of a compound represented by the general formula (I) or (II) or a salt thereof or a compound represented by the general formula (III).
摘要:
A novel silver halide photographic material comprising at least one methine compound represented by the following general formula (I): ##STR1## wherein R.sup.1 represents --(CH.sub.2).sub.r --CONHSO.sub.2 --R.sup.3, --(CH.sub.2).sub.s --SO.sub.2 NHCO--R.sup.4, --(CH.sub.2).sub.t --CONHCO--R.sup.5 or --(CH.sub.2).sub.u --SO.sub.2 NHSO.sub.2 --R.sup.6 in which R.sup.3, R.sup.4, R.sup.5 and R.sup.6 each represents an alkyl group, alkoxy group or amino group, r, s, t and u each represents an integer 1 to 5; and R.sup.2 represents has the same meaning as R.sup.1 or represents an alkyl group; Z.sup.1 and Z.sup.2 each represents a nonmetallic atom group required to form a 5- or 6-membered heterocyclic group; p and q each represents an integer 0 or 1; L.sub.1, L.sub.2 and L.sub.3 each represents a methine group; m represents an integer 0 to 2; X represents an anion; and k represents an integer required to adjust the charge in the molecule to 0. The silver halide photographic material may comprise at least one methine compound represented by the general formula (I) and at least one water-soluble dye.
摘要:
A silver halide photographic light-sensitive material comprising a support having thereon at least one light emulsion layer containing (A) at least one of the methine compounds represented by the following formula (I) and (B) at least one of the methine compounds represented by the following formula (II) or (III): ##STR1## wherein Z.sup.1, Z.sup.2, R.sup.1, R.sup.2, L.sub.1 -L.sub.8, p, q, k.sub.1 -k.sub.3, n.sub.1 -n.sub.3 and X.sub.1 -X .sub.3 are as defined in the specification.
摘要:
A method for processing a black-and-white photosensitive material comprising the steps of:(a) exposing a silver halide photosensitive material having been spectrally sensitized with a sensitizing dye;(b) developing the exposed material;(c) fixing the developed material; and(d) thereafter at least one step selected from washing the material and stabilizing the material;at least one of the fixing, washing and stabilizing steps being performed in the presence of at least one compound represented by formula (I) or (II) or a salt thereof; ##STR1## wherein A represents an atomic group necessary for forming a saturated or unsaturated 3-membered to 8-membered ring comprising at least one hetero atom selected from an oxygen atom, a nitrogen atom, a sulfur atom and a selenium atom; and M represents a hydrogen atom or a counter cation; andX--(R.sub.1 --S).sub.n --R.sub.2 --S--R.sub.3 --Y (II)wherein R.sub.1, R.sub.2 and R.sub.3, which may be the same or different, each represents an alkylene group; R.sub.1 and R.sub.3 may be linked to form a ring, R.sub.2 and R.sub.3 may be linked to form a ring; X and Y, which may be the same or different, each represents a hydrogen atom, an alkyl group, an amino group, an ammonio group, a hydroxyl group, a carboxyl group, a sulfo group, an aminocarbonyl group or an aminosulfonyl group, and X and Y may be linked to form a ring; and n is an integer of from 0 to 10.
摘要:
Disclosed is a novel silver halide photographic material comprising a support having thereon (a) a layer containing at least one methine compound represented by the following general formula (I) and (b) a layer containing at least one methine compound represented by the following general formula (II), (III), (IV) or (V): ##STR1## wherein the variables in the formulas are defined in the detailed description. In a preferred embodiment, the silver halide photographic material comprises at least one methine compound represented by general formula (I) and at least one methine compound represented by general formula (II) or (V) in the same layer.
摘要:
A silver halide photographic material comprising a support and at least one silver halide emulsion layer on the support, wherein at least one compound represented by general formula (I) is contained in the silver halide emulsion layer or another hydrophilic colloid layer:A--B m(I)wherein A represents a blocking group capable of releasing B during processing, and B represents a group capable of releasing a residual color improving agent which satisfies Condition 1 after being released from A--B, and is linked to A via a hetero atom in B.Condition 1:When a 2 ml aqueous solution of 4.0.times.10.sup.-4 mole/l of anyhydro-5,5'-dichloro-9-ethyl-3,3'-bis(3-sulfopropyl)-thiacarbocyanine hydroxide.pyridinium salt is mixed with a 1 ml aqueous solution of 1.0.times.10.sup.-1 mole/l of potassium chloride, and 4 ml of an aqueous solution of 8.0.times.10.sup.-2 mol/l of the residual color improving agent are further added to this mixture, which is then diluted with water to a set volume of 10 ml to form a diluted aqueous solution, the molecular extinction coefficient of this diluted aqueous solution at 624 nm is 1.0.times.10.sup.5 or less.
摘要:
A silver halide photographic material comprising a support having thereon at least one silver halide emulsion layer spectrally sensitized by at least one adsorptive spectral sensitizing dye, wherein the emulsion layer or a hydrophilic colloid layer adjacent to the emulsion layer contains at least one compound represented by following formula (I), (II), or (III); ##STR1##A.sub.2 --Time.sub.1).sub..sbsb.t.sbsb.1 X (II)A.sub.3 --Time.sub.2).sub.t.sbsb.2 Y (III)(all the symbols of which are defined in the specification) are disclosed.