摘要:
A reducer containing a ferric chelate compound of an amino compound and further containing an reduction accelerator and/or a complex-forming agent and a dye. ##STR1## wherein A.sub.41, A.sub.42 and A.sub.43 each individually represents a carboxyl group, a phosphono group, a sulfo group or a hydroxyl group; L.sub.41 and L.sub.42 each individually represents a divalent coupling group containing an aliphatic group, an aromatic group, a heterocyclic group or combinations thereof; R.sub.41 represents a substituent; and a represents 0, 1, 2, 3 or 4. The reducer is superior in the rate of reduction, reducibility and reduction working properties and so stable that no precipitate will separate out with time. Also disclosed is a silver image reducing method wherein a silver image formed by exposing and developing a silver halide photosensitive material is reduced in the presence of the above-described reducer. The reducer and the reducing method are suitable for application to high-contrast photosensitive materials.
摘要:
A photographic processing composition containing at one compoud represented by formula (I) ##STR1## wherein R.sub.1 represents a hydrogen atom, an aliphatic group, or an aromatic group, L.sub.1 and L.sub.2 each represents a divalent bonding group including an alkylene group and/or an arylene group; X represents a ##STR2## group (wherein R.sub.a, R.sub.b and R.sub.c each represents a hydrogen atom, an aliphatic group or an aromatic group, and R.sub.d represents an aliphatic group or an aromatic group); and Y represents a carboxy group, a hydroxy group, a phosphono group, a sulfo group or a salt thereof. The processing composition does not produce precipitate or sludge even when contaminated by metallic ions. A processing method using the processing composition is also disclosed.
摘要:
A silver halide photographic material is disclosed, which comprises a support and at least one light-sensitive silver halide emulsion layer formed thereon, said emulsion layer containing at least one nucleating agent represented by formula (I) ##STR1## wherein A.sub.1 and A.sub.2 both represent a hydrogen atom, or one of A.sub.1 and A.sub.2 represents a hydrogen atom and the other represents a sulfinic acid residue or an acyl group; R.sub.1 represents an aliphatic group, an aromatic group, or a heterocyclic group; R.sub.2 represents a hydrogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, or an amino group; G represents a carbonyl group, a sulfonyl group, a sulfoxy group, a phosphoryl group, or an iminomethylene group; and Y represents a phenylene group or a naphthylene group; the sum of the total carbon atoms of said R.sub.1, R.sub.2, and Y being at least 13. The nucleating agent provides very high contrast images when used in a negative working silver halide emulsion.
摘要:
An ultra-high contrast negative type silver halide photographic material comprising:(1) at least one silver halide emulsion layer on a support;(2) at least one compound selected from among hydrazine derivatives which can be represented by formula (I) below, which is included in said emulsion layer or in another hydrophilic colloid layer, ##STR1## wherein A.sub.1 and A.sub.2 both represent hydrogen atoms or one represents a hydrogen atom and the other represents a sulfinic acid residual group or an acyl group, R.sub.1 represents an aliphatic group, an aromatic group or a heterocyclic group, R.sub.2 represents a hydrogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, or an amino group, G.sub.1 represents a carbonyl group, a sulfonyl group, a sulfoxy group, a phosphoryl group or an N-substituted or unsubstituted iminomethylene group, and at least one of R.sub.1 and R.sub.2 has a group which promotes adsorption on silver halide; and(3) at least one compound selected from among the hydrazine derivatives which can be represented by the formula (II) below, which is included in the said emulsion layer or in another hydrophilic colloid layer, ##STR2## wherein A.sub.3 and A.sub.4 both represent hydrogen atoms or one represents a hydrogen atom and the other represents a sulfinic acid residual group or an acyl group, R.sub.3 represents an aliphatic group, an aromatic group or a heterocyclic group, R.sub.4 represents a hydrogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group or an amino group, G.sub.2 represents a carbonyl group, a sulfonyl group, a sulfoxy group, a phosphoryl group, or an iminomethylene group, and the total number of carbon atoms in R.sub.3 and R.sub.4 is at least 13.
摘要:
A silver halide photographic material is disclosed, comprising a support having thereon at least one of silver halide photographic emulsion layers and other hydrophilic colloidal layers, wherein said at least one of photographic emulsion layers and other hydrophobic colloidal layers contains a compound represented by formula (I) ##STR1## wherein at least one of A.sub.1 and A.sub.2 represents a hydrogen atom and other represents a hydrogen atom, a sulfinic residual group or ##STR2## wherein R.sub.0 represents an alkyl group, an alkenyl group, an aryl grup, an alkoxy group or an aryloxy group, and l.sub.1 represents an integer of 1 or 2; G represents ##STR3## wherein m.sub.1 represents an integer of 1 or 2, a sulfonyl group, a sulfoxy group ##STR4## wherein R.sub.1 represents an alkoxy grup or an aryloxy group, a thiocarbonyl grup or an iminomethylene group; X represents an aliphatic group, an aromatic group or a heterocyclic group, substituted by the group represented by formula (a): ##STR5## wherein Y represents a hydrogen atom, an aliphatic group, an aromatic group or a heterocyclic group; L represents ##STR6## wherein R.sub.a ' represents a hydrogen atom, an aliphatic group or an aromatic group; R.sub.a represents a hydrogen atom, an aliphatic group or an aromatic group; and R represents a group represented by formula (b): ##STR7## wherein R.sub.b.sup.1 to R.sub.b.sup.4 may be the same or different and each represents a hydrogen atom, an aliphatic group or an atomatic group; B represents a suitable atomic group for forming a 5- or 6-membered ring; Z represents a group capable of making a nucleophilic attach on G to separate the --G--R portion from the other portion of the formula; m.sub.b represents an integer of 0 or 1; n.sub.b represents an integer of 1 when Z is a hydroxy group, or n.sub.b represents an integer of 0 or 1 when Z represents a group other than a hydroxy group; and (m.sub.b +n.sub.b) represents an integer of 1 or 2.
摘要:
A method for forming a high contrast negative image comprising the steps of:(a) imagewise exposing a silver halide photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer, said emulsion layer or other hydrophilic colloid layer containing at least one hydrazine derivative; and(b) developing said exposed silver halide photographic material in an developer solution containing:(1) a dihydroxybenzene developing agent;(2) at least one auxiliary developing agent selected from a 1-phenyl-3-pyrazolidone auxiliary developing agent and a p-aminophenol auxiliary developing agent;(3) at least 0.3 mol per liter of a sulfite; and(4) at least one compound represented by formula (I): ##STR1## wherein Y represents a group capable of adsorbing to silver halide; A represents a divalent linking group; B represents an amino group, an ammonium group or a nitrogen containing heterocyclic group; m is 1, 2 or 3; and n is 0 or 1; to form a high contrast negative image.
摘要:
A novel method for processing a silver halide color photographic material which comprises color developing an imagewise exposed silver halide color photographic material and then processing the material with a having a bleaching ability containing at least one bleaching agent a ferric complex of a compound represented by at least one of formula (I) and formula (II): ##STR1## wherein W.sup.1 represents an alkylene group containing 3 or less carbon atoms in total; L.sup.1, L.sup.2, L.sup.3 and L.sup.4 each represents an alkylene or arylene group; and M.sub.1 to M.sub.6 each represents a hydrogen atom or a cation; ##STR2## wherein W.sup.2 represents an alkylene group having 2 to 8 carbon atoms, an arylene group having 6 to 10 carbon atoms, cyclohexane group, ##STR3## (in which W.sup.21 and W.sup.22 each represents an alkylene group, and m represents an integer of 1 to 3, and A represents a hydrogen atom, hydrocarbon group, --L.sub.A --COOM, --L.sub.A --PO.sub.3 M.sub.2, --L.sub.A --OH or --L.sub.A --SO.sub.3 M (L.sub.A represents an alkylene group having 1 to 8 carbon atoms or an arylene group having 6 to 10 carbon atoms, and M represents a hydrogen atom or a cation such as an alkali metal or ammonium)), or a combination of theseof; L.sup.5, L.sup.6, L.sup.7 and L.sup.8 each represents an alkylene group; and M.sub.7, M.sub.8, M.sub.9, M.sub.10 and M.sub.11 each represents a hydrogen atom or a cation.
摘要:
The sulfonamide derivative according to the present invention is expressed by a general formula: ##STR1## (where R.sub.11 represents an alkyl group having 5 or less carbon atoms; Each of L.sub.11, L.sub.12 and L.sub.13 represents an alkylene group; Each of M.sub.11 and M.sub.12 represents a hydrogen atom or a cation.)This compound is suitable for the applications such as photographic processing solution, for chelate titration or analytical reagent for medical treatment or for medical drugs as a metallic ion shielding agent.
摘要:
A silver halide photographic material comprising at least one silver halide emulsion layer on a support, characterized in that there is contained a compound represented by the general formula ##STR1## wherein R.sup.1 and R.sup.2 each represents a hydrogen atom, aliphatic group, aromatic group or heterocyclic group, with the proviso that R.sup.1 and R.sup.2 may be connected to each other to form a ring; L represents a divalent linking group; V represents a carbonyl group, ##STR2## group, sulfonyl group, sulfoxy group, ##STR3## group (in which R.sub.0 represents an alkoxy group or aryloxy group), iminomethylene group or thiocarbonyl group; Time represents a divalent linking group; m represents an integer 0 or 1; n represents an integer 0 or 1; PUG represents a photographically useful group; and X represents an atomic group required to form a 5- or 6-membered ring with ##STR4## wherein R.sup.1, R.sup.2, V, m, n and Time are defined above; L' represents a divalent linking group; and X represents an atomic group required to form a 5- or 6-membered ring with ##STR5## and PUG represents photographically useful groups set forth in the specification.
摘要:
The sulfonamide derivative according to the present invention is expressed by a general formula: ##STR1## (where R represents an alkyl group. --X represents --L.sub.12 --COOM or ##STR2## and Y-- represents R--SO.sub.2 NH--L.sub.11 -- or MOOC--L.sub.12 --. Each of L.sub.11 and L.sub.12 represents an alkylene group. Z is identical to Y, and M represents a hydrogen atom or a cation. However, X and Y cannot be --L.sub.12 --COOM at the same time. W represents an alkylene group or a cycloalkylene group having 2 or more carbon atoms.)This compound is useful as a metallic ion shielding agent and is suitable, for example, for the applications such as photographic processing solution, chelate titration or analytical reagent for medical treatment or for medical drugs as a metallic ion shielding agent.