摘要:
A photographic two-equivalent magenta coupler represented by the following general formula (I): ##STR1## wherein (A) represents a residue of a magenta color image-forming coupler in which one of the hydrogen atoms in the coupling position is eliminated; Q represents an oxygen atom or NH group; and B represents the non-metallic atoms necessary to form a 5-membered or a 6-membered ring containing the nitrogen atom and the ##STR2## group. Color photographic light-sensitive materials containing the two-equivalent magenta coupler are also described.
摘要:
A two-equivalent magenta coupler forming magenta dye images in a color photographic material by a coupling reaction with an oxidation product of a primary aromatic amino color developing agent and having the formula (I) ##STR1## wherein [A] represents a residue of a magenta dye-forming coupler; ##STR2## represents a group which is substituted for one of the hydrogen atoms of the active methylene group of the coupler A; Z represents a hydrogen atom, an alkyl group, an aryl group, or a heterocyclic group; B represents a --D-Y residue or an --N Q residue; D represents an oxygen atom, a sulfur atom, or an --NR-- group; R of the --NR-- group represents a hydrogen atom, an alkyl group, or an aryl group; Y represents an alkyl group, an aryl group, or a heterocyclic group; Q of the --N Q residue represents a non-metal atomic group necessary for forming a 5-membered or 6-membered nitrogen-containing heterocyclic group; n is 1 or 2 and when n is 2, B can also represent a --Y group; a color photographic silver halide light-sensitive material comprising a support having thereon at least one silver halide emulsion layer and containing the two-equivalent magnetic coupler having the formula (I); and an image forming method comprising developing an exposed photographic silver halide light-sensitive material comprising a support having thereon at least one silver halide emulsion layer is the presence of the two-equivalent magenta coupler having the formula (I).
摘要:
A two-equivalent magenta coupler in which the coupling position is substituted with a sulfonamido group, and capable of forming a magenta color image on coupling with an oxidation product of an aromatic primary amine developing agent, and a silver halide color photographic light-sensitive material having at least one silver halide emulsion layer on a support and containing the two-equivalent magenta coupler.
摘要:
A photographic two-equivalent magenta coupler represented by the following general formula (I):a--s(o).sub.n --R (I)wherein A represents a residue of a magenta color image forming coupler in which one of the hdyrogen atoms on the active methylene group is eliminated; R represents an alkyl group, an aryl group or a heterocyclic group; and n represents 1 or 2; and color photographic light-sensitive material containing the two-equivalent magenta coupler.
摘要:
A photographic two-equivalent magenta coupler, capable of forming a magenta color image upon coupling reaction with an oxidation product of an aromatic primary amine developing agent, represented by the following general formula I: ##STR1## wherein (A) represents a residue of a magenta color image forming coupler; ##STR2## represents a group which is substituted FOR ONE HYDROGEN ATOM OF THE ACTIVE METHYLENE GROUP IN THE COUPLER A; Z represents an oxygen atom or a sulfur atom; B represents a -- Y group, a -- D -- Y group, or a ##STR3## group; D represents an oxygen atom or an --NR -- group; R represents a hydrogen atom, an alkyl group or an aryl group; Y represents an alkyl group, an aryl group or a heterocyclic group; and Q in the ##STR4## group represents the non-metallic atoms necessary to form a 5-membered or 6-membered nitrogen containing heterocyclic ring; and color photographic light-sensitive materials containing the two equivalent magenta coupler.
摘要:
A photographic two-equivalent magenta coupler represented by the following general formula (I): ##STR1## wherein [A] represents a magenta color image-forming coupler residue, and the ##STR2## moiety represents a group replacing a hydrogen atom of an active methylene group in coupler [A] wherein Z.sub.a Z.sub.b, Z.sub.c and Z.sub.d, which can be the same or different, each represents a methine group or an --N.dbd. group, and the nitrogen-containing ring formed by Z.sub.a to Z.sub.d may further be substituted with a fused ring, with the proviso that the ##STR3## moiety does not represent a benzotriazolyl-1, benzotriazolyl-2, benzimidazolyl-1 or indazolyl-1 group; a photographic light sensitive material containing the photographic coupler; and a method of forming images using the photographic coupler.
摘要:
A multilayer color photographic material with improved color reproduction comprising a support having thereon at least two photosensitive silver halide emulsion layers which provide color images having different colors from each other, the multilayer color photographic material containing at least one interlayer color correction coupler as defined hereinafter.
摘要:
4-Piperidino-5-oxo-2-pyrazoline represented by the following general formula (X); ##STR1## wherein R.sub.1 represents a group having about 6 to about 40 carbon atoms, R.sub.2 represents a hydrogen atom or a group having 0 to about 45 carbon atoms, R.sub.3, R.sub.4 and R.sub.5 each represents a hydrogen atom or a group having 0 to 20 carbon atoms, and R.sub.3 and R.sub.4 may combine to form an aliphatic ring, an aromatic ring or a heterocyclic ring. The 4-piperidino-5-oxo-pyrazolines are useful as magenta color couplers.
摘要:
A multilayer color photographic material with improved color reproduction comprising a support having thereon at least two photosensitive silver halide emulsion layers which provide color images having different colors from each other, the multilayer color photographic material containing at least one interlayer color correction coupler as defined hereinafter.
摘要:
4-Pyridinio-5-pyrazolone salts useful as dyes and particularly useful as intermediates for photographic couplers and processes for the preparation thereof.