摘要:
A photographic naphtholic coupler comprising a ballast free naphtholic coupler moiety containing a --CONH.sub.2 group in the 2- position and a ballasted coupling-off group in the 4- position enables good wash out of dye formed upon oxidative coupling from a photographic material during processing of such a photographic material. Such a naphtholic coupler is useful in photographic silver halide materials and processes.
摘要:
A photographic coupler (A) capable, upon oxidative coupling, of forming a dye that can be washed out of a photographic element containing the coupler upon processing, comprises, in the coupling position, a coupling-off group that comprises, in sequence, a releasable ballasted carbamate timing group and a releasable benzotriazole, triazole or tetrazole development inhibitor group. Such a coupler is useful in photographic silver halide materials and processes to provide improved images.
摘要:
A photographic naphtholic coupler comprising a ballast free naphtholic coupler moiety containing a --CONH.sub.2 group in the 2- position and a ballasted coupling-off group in the 4- position enables good wash out of dye formed upon oxidative coupling from a photographic material during processing of such a photographic material. Such a naphtholic coupler is useful in photographic silver halide materials and processes.
摘要:
Photographic compound (A) capable of releasing a photographically useful group is represented by the formula: SOL-CAR-LINK-PUG wherein SOL is a water-solubilizing group; CAR is a carrier moiety that, upon reaction with oxidized developing agent, is capable of releasing LINK-PUG and capable of forming a compound that is washed out of the photographic element during photographic processing; LINK-PUG is in turn capable of releasing a photographically useful group (PUG) during photographic processing and LINK-PUG is represented by the formula: ##STR1## wherein X, R.sub.1, R.sub.2, R.sub.3, R.sub.4 and PUG are as defined in the application. The photographic compound (A) enables formation of easily removable compounds in photographic elements and processes that provide images having improved acutance.
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 formulaCOUP--T.sup.1 --T.sup.2 --(T.sup.3).sub.b --PUGwhereinCOUP is a coupler moiety having a coupling site to which T.sup.1 is attached;T.sup.1 and T3 are timing or linking groups;T.sup.2 is 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 a substituent group as further defined;q is 0, 1, 2, 3 or 4;b is 0 or 1; andPUG is a photographically useful group.
摘要:
A photographic element comprising a support having situated thereon at least one silver halide emulsion layer, the element further comprising a photographic coupler represented by the formula COUP--(T.sup.1).sub.b --T.sup.2 --(T.sup.3).sub.c --PUG wherein the substituents are as defined in the specification.
摘要:
A photographic element comprising a support having situated thereon at least one silver halide emulsion layer, the element further comprising a photographic coupler represented by the formula COUP--(T.sup.1).sub.b --T.sup.2 --(T.sup.3).sub.c --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 a nucleophilic displacement reaction, to release T.sup.2 ; T.sup.2 is a triazole timing or linking group which, after release from T.sup.1, functions by a nucleophilic displacement reaction to release T.sup.3 or PUG and 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 is a hydrogen or halogen atom, or an aliphatic, carbocyclic, carbamoyl, sulfamoyl, carbonamido, sulfonamido, alkoxycarbonyl, alkyl or arylketo, alkyl or arylsulfo, sulfo, hydroxy, acyl, nitro, cyano, amino, alkoxy, alkoxyalkyl, aryloxy, aryloxyalkyl, thioalkoxy, thioalkoxyalkyl, thioaryloxy, thioaryloxyalkyl or heterocyclic group; X.sup.2 is a linking group which spatially relates a nitrogen atom of the triazole ring and E.sup.2 so that upon displacement of T.sup.2 from T.sup.1, T.sup.2 undergoes a nucleophilic displacement reaction with the formation of a three to eight membered ring and the cleavage of the bond between E.sup.2 and PUG or T.sup.3 ; E.sup.2 is an electrophilic group which is attached to T.sup.3 or PUG and which is displaced therefrom by said nuclophilic displacement reaction after T.sup.2 is displaced from T.sup.1 ; T.sup.3 is a timing or linking group attached to E.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 a nucleophilic displacement reaction, to release PUG; b and c are independently selected from 0 or 1; and PUG is a photographically useful group.
摘要:
A photographic element comprising a support having situated thereon at least one silver halide emulsion layer, the element further comprising a photographic coupler represented by the formula COUP--(T.sup.1).sub.b --T.sup.2 --(T.sup.3).sub.c --PUG wherein the substituents are as defined herein the specification.
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 ##STR1## 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 chain, or by nucleophilic displacement reaction, to release from HETERO; HETERO is a heterocyclic group containing at least two heteroatoms independently selected from oxygen, nitrogen, or sulfur, wherein one of the heteroatoms is directly attached to T.sup.1 ; 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; and PUG is a photographically useful group.
摘要翻译:一种照相元件,包括一个载体,其上设置有至少一个卤化银乳剂层,该层包含由式“IMAGE”表示的照相成色剂,其中COUP是具有与T1连接的偶合位点的成色剂部分; T1是在加工期间从COUP释放的定时或连接基团,并且通过电子转移共轭链或通过亲核取代反应从HETERO释放的功能; HETERO是含有至少两个独立地选自氧,氮或硫的杂原子的杂环基,其中一个杂原子直接连接到T1上; R 1和R 2独立地选自氢或脂族,碳环或杂环基,或可以键合在一起形成5,6或7元环; PUG是一个摄影有用的小组。
摘要:
A photographic element is disclosed comprising a support bearing at least one photographic silver halide emulsion layer and at least one photographic coupler comprising a pyrazolotriazole moiety (PT), the coupler having the formula ##STR1## wherein PT is a pyrazolotriazole moiety.
摘要翻译:公开了一种照相材料,其包含支承至少一个照相卤化银乳剂层的支持体和至少一个包含吡唑并三唑部分(PT)的照相成色剂,所述成色剂具有式(* CHEMICAL STRUCTURE *),其中PT是吡唑并三唑部分。