摘要:
Photographic compounds capable of releasing a photographically useful group (PUG) by means of an intramolecular nucleophilic displacement provide increased image acutance when a coupling-off group in the coupling position of the compound is a group of the formula: ##STR1## wherein PUG is a photographically useful group; Q is N or C--R where R is hydrogen or a substituent that does not adversely affect imaging; and Z represents atoms completing a non-aromatic, heterocyclic ring. The photographic compounds are useful in photographic materials and processes.
摘要:
In a silver halide color photographic photosensitive material, having a red, a green and a blue light-sensitive emulsion layer on a support, each emulsion containing a nondiffusible image forming coupler, improvement is attained by providing a layer structure in which at least one of the red, the green and the blue light-sensitive emulsion layer is separated into a high sensitivity silver halide emulsion layer and a low sensitivity silver halide emulsion layer, both layers having photosensitive regions in substantially the same spectral region, by an intermediate layer and incorporating at least one kind of DIR compounds represented by formula (I) defined in the specification in at least one layer of the high sensitivity silver halide emulsion layer, the low sensitivity silver halide emulsion and the intermediate layer.
摘要:
A silver halide color photosensitive material has, on a support, a unit blue-sensitive silver halide emulsion layer, a unit green-sensitive silver halide emulsion layer and a unit red-sensitive silver halide emulsion layer, each comprising two or more light-sensitive layers having the same color sensitivity but differing in speed to each other. The silver halide color photosensitive material contains at least one compound represented by the following general formula (I) or general formula (II); and at least one of the light-sensitive layers contains silver halide grains in which tabular grains each having an aspect ratio of 5.0 or more account for 60% or more of the total projected area of the silver halide grains. 1 The respective definitions of the substituents are described in the specification.
摘要:
This invention relates to an imaging element comprising an imaging layer having associated therewith a compound of Structure I: In the above Structure I, the substituents are as defined in the application. Such compounds have good reactivity and can by used to block photographically useful compounds such as developing agents until thermally activated under preselected conditions. Compounds according to the present invention are especially useful in color photothermographic imaging elements.
摘要:
A silver halide color photographic light-sensitive material containing a compound represented by formula (I) belowformula (I)A--O--C(.dbd.O)--N(X.sub.1)--C(X.sub.2)(X.sub.3)--DIwherein A represents a coupler residue, X.sub.1 represents a heterocyclic group or a --C(X.sub.4)(X.sub.5)--Y group, Y represents an --SO.sub.2 R.sup.1, --SO.sub.2 NR.sup.1 R.sup.2, --CONR.sup.1 R.sup.2, --CO.sub.2 Z, --CN, --CF.sub.3, --CCl.sub.3, or --NO.sub.2 group, each of R.sup.1 and R.sup.2 independently represents a hydrogen atom or a substituted or nonsubstituted alkyl, cycloalkyl, alkenyl, aryl, or heterocyclic group, Z represents a hydrogen atom or a substituted or nonsubstituted cycloalkyl, alkenyl, aryl, or heterocyclic group, each of X.sub.2, X.sub.3, X.sub.4, and X.sub.5 represents a hydrogen atom or a substituent group, and DI represents a development inhibitor residue which is bonded by a hetero atom and released to form mercaptoazole.
摘要翻译:含有由式(I)表示的化合物(I)表示的化合物的卤化银彩色照相感光材料AOC(= O)-N(X1)-C(X2)(X3)-DI其中A表示成色剂残基X1 表示杂环基或-C(X 4)(X 5)-Y基,Y表示-SO 2 R 1,-SO 2 NR 1 R 2,-CONR 1 R 2,-CO 2 Z,-CN,-CF 3,-CCl 3或-NO 2基, R 2独立地表示氢原子或取代或未取代的烷基,环烷基,烯基,芳基或杂环基,Z表示氢原子或取代或未取代的环烷基,烯基,芳基或杂环基,X, X4和X5表示氢原子或取代基,DI表示通过杂原子键合并释放形成巯基唑的显影抑制剂残基。
摘要:
A compound represented by the following general formula (I) is added to at least one layer of a silver halide photographic photosensitive material, thereby improving sharpness and graininess or decreasing a variation in photographic performance during storage after photography and before development: ##STR1## where A represents a coupler moiety, each of R.sup.1 and R.sup.2 independently represents a hydrogen atom or a substituent, each of R.sup.3 and R.sup.4 independently represents a hydrogen atom or an alkyl group, INH represents a group having a development inhibiting function, and R.sup.5 represents a nonsubstituted phenyl group, a nonsubstituted primary alkyl group, or a primary alkyl group substituted with a group other than an aryl group, at least one of R.sup.1 to R.sup.4 being a substituent other than a hydrogen atom, and an --OC(.dbd.O)-- group combining with one of two nitrogen atoms forming a pyrazole ring.
摘要:
A photographic element comprising a support having situated thereon at least one silver halide emulsion layer, the layer containing a photographic coupler represented by the formula COUP--T.sup.1 --T.sup.2 --(T.sup.3).sub.b --PUG wherein COUP is a coupler moiety having a coupling site to which T.sup.1 is attached; T.sup.1 is a timing or linking group which releases from COUP during processing and which functions by electron transfer down a conjugated or unconjugated chain, or by nucleophilic displacement reaction, to release T.sup.2, T.sup.2 being an indazole timing or linking group which, after release from T.sup.1, functions by electron transfer down a conjugated chain to release T.sup.3 or PUG, and which is represented by the formula: ##STR1## wherein ** denotes the point of attachment to T.sup.1 and *** denotes the point of attachment to T.sup.3 or PUG; R.sup.1 and R.sup.2 are independently selected from hydrogen, or an aliphatic, carbocyclic, or heterocyclic group, or may be bonded together to form a 5, 6, or 7 membered ring; V is independently selected from the group consisting of an alkyl, carbocyclic, heterocyclic, halo, carbamoyl, sulfamoyl, carbonamido, sulfonamido, keto, sulfo, nitro, hydroxyl, carboxyl, amino, alkoxy, alkoxycarbonyl, aryloxy, or arylthio group; q is 0, 1, 2, 3 or 4; T.sup.3 is a timing or linking group attached to T.sup.2 which is released therefrom after T.sup.2 releases from T.sup.1, and which functions by electron transfer down a conjugated or unconjugated chain, or by nucleophilic displacement reaction, to release PUG; b is 0 or 1; and PUG is a photographically useful group.
摘要:
A photographic element is disclosed containing a compound capable of releasing image-wise a photographic useful group (PUG) based on a mechanism involving radical formation under development conditions and splitting of a homolytically labile bond. In a preferred embodiment the compound capable of releasing the PUG is a hydrazine derivative or a 1-aryl-3-pyrazolidinone derivative.
摘要:
The invention provides a photographic element comprising a support bearing a photographic silver halide emulsion layer having associated therewith a high dye-yield coupler having the formula:COUP--(T).sub.m --L--DYEwhere COUP is the parent group of the coupler capable of reacting at the coupling position with oxidized color developer to form a first dye, T is one or more timing groups with m=1 or 2, L is a linking group selected from the group consisting of --OC(O)--, --OC(S)--, --SC(O)--, --SC(S)--, or --OC(.dbd.N SO.sub.2 R)--, where R is substituted or unsubstituted alkyl or aryl, and DYE is a second dye or precursor thereof, wherein there is present at least one T group that contains a substituent having the formula:--(LINK).sub.p --A--B--(C--D).sub.nwherein:LINK is an alkylene group capable of linking the above group to the group T, where p=0 or 1;A is a member selected from the group consisting of --NHCO--, --N(R')C(O)N(R--)--, --CONH--, --NR'SO.sub.2 --, --SO.sub.2 NR'--, and --OPO.sub.2 --, where R' is hydrogen or substituted or unsubstituted alkyl;B is a substituted or unsubstituted aromatic carbocyclic or heterocyclic group;C is a solubilizing group selected from --NHSO.sub.2 -- and --SO.sub.2 NH--;D is a substituted or unsubstituted alkyl, aryl, or heterocyclic ring; andn is from 1 to 3.The invention also provides a photographic coupler, a photographic silver halide emulsion, and a process for forming an image in a photographic element in accordance with the invention.
摘要:
A silver halide color photographic material comprising on a support at least a silver halide emulsion layer, comprising a compound represented by general formula (I):A--(L).sub.r --INH--(CH.sub.2).sub.n --Q(I)wherein A represents a coupler residue excepting 1H-pyrazolo[1,5-b]-1,2,4-triazole and 1H-pyrazolo[5,1-c]-1,2,4-triazole; L represents a timing group or a group which reduces an oxidation product of a developing agent; r represents an integer of 2 to 4; n represents an integer of 0 to 3; Q represents a group having a molecular weight of 80 to 250; and INH represents a development inhibitor residue bonded to A--(L).sub.r via hetero atoms and selected from a group ##STR1## wherein * represents the position at which the group is connected to L and ** represents the position at which the group is connected to --(CH.sub.2).sub.n --Q.