摘要:
This invention relates to a photographic element comprising a support and at least two silver halide emulsion layers further comprising an electron transfer agent releasing compound represented by the formula (I): CAR 1 -(L) n -ETA wherein:
CAR 1 is a carrier moiety which is capable of releasing -(L)n-ETA on reaction with oxidized developing agent; L is a divalent linking group, n is 0, 1 or 2; and ETA is a releasable 1 -aryl-3-pyrazolidinone electron transfer agent having a calculated log partition coefficient (c log P) greater than or equal to 2.40 and the total sum of the Hammett sigma(para) values of the substituents on the 1-aryl ring is 0.51 or less, the ETA being bonded to L or CAR 1 through either the nitrogen atom in the 2-position or the oxygen attached to the 3-position of the pyrazolidinone ring; and a development accelerator releasing compound represented by the formula (II): CAR 2 -(SAM)-NX 1 -NX 2 X 3 wherein:
CAR 2 is a carrier moiety which is capable of releasing -(SAM)-NX 1 -NX 2 X 3 on reaction with oxidized developing agent; SAM is a silver absorbable moiety attached to the carrier moiety and is released on reaction with oxidized development agent; and -NX 1 -NX 2 X 3 is a hydrazine group wherein X 1 , X 2 and X 3 are individually hydrogen or a substituent chosen from alkyl, aryl, carbonyl or sulfonyl groups with the proviso that at least one of X 1 , X 2 and X 3 is hydrogen.
摘要翻译:本发明涉及一种照相元件,其包括载体和至少两个卤化银乳剂层,其还包含由式(I)表示的电子转移剂释放化合物: CAR 1 L)n-ETA DF>其中:CAR 1是能够与氧化的显影剂反应释放 - (L)n-ETA的载体部分; L是二价连接基团,n是0,1或2; 并且ETA是具有大于或等于2.40的计算的对数分配系数(c log P)的可释放的1-芳基-3-吡唑烷酮电子转移剂,并且1位上的取代基的哈米特σ(对)值的总和) 芳基环为0.51以下,ETA通过2-位的氮原子或与吡唑烷酮环的3-位相连的氧键与L或CAR 1键合; 和由式(II)表示的显影促进剂释放化合物: CAR 2 - (SAM)-NX 1 -XX 2 X 3 / 其中:CAR 2是能够与氧化显影剂反应释放 - (SAM)-NX 1 -NX 2 X 3的载体部分。 SAM是与载体部分连接的银可吸收部分,与氧化显影剂反应释放; 和-NX 1 -XX 2 X 3是其中X 1,X 2和X 3独立地为氢或选自烷基,芳基,羰基或磺酰基的取代基的肼基团 条件是X 1,X 2和X 3中的至少一个是氢。
摘要:
A color photographic element containing a support bearing:
(a) a red record comprising, in order from the support, a less and a more red light sensitive silver halide emulsion layer, each having associated therewith at least one cyan dye-forming coupler; (b) further from the support a green record comprising, in order from the support, a less and a more green light sensitive silver halide emulsion layer, each having associated therewith at least one magenta dye-forming coupler, and (c) still further from the support, a blue record comprising in order from the support, a less and a more blue light sensitive silver halide emulsion layer, each having associated therewith at least one yellow dye-forming coupler, wherein: (d) there is located below and only below the most red light sensitive layer of the red record a relatively non-light sensitive "small 3-D emulsion layer" that is substantially free of red light absorbing dye.
摘要:
A color photographic element is disclosed containing in its blue recording layer unit a blue light reflective layer positioned to receive light from a layer in the blue recording layer unit containing latent image forming silver halide grains of maximum sensitivity. The blue light reflective layer is free of blue absorbing dye and contains tabular silver halide grains having a thickness in the range of from 0.12 to 0.15 µm, an average aspect ratio of greater than 15, and a coating coverage of 0.4 to 1.5 g/m 2 , and formed of greater than 50 mole percent bromide, based on silver, and the layer containing latent image forming silver halide grains of maximum sensitivity contains from 0.00 to 0.5 g/m 2 of randomly oriented silver halide grains of greater than 50 mole percent bromide, based on silver, having equivalent circular diameters in the range of from 0.05 to 0.5 µm and free of adsorbed blue absorbing dye, where the combined coating coverage of the tabular silver halide grains in the blue light reflective layer and the randomly oriented silver halide grains in the layer containing latent image forming silver halide grains of maximum sensitivity is at least 0.5 g/m 2 , based on silver.
摘要翻译:公开了一种彩色照相元件,其蓝色记录层单元中包含蓝光反射层,该蓝色光反射层定位成接收来自蓝色记录层单元中含有最高灵敏度的潜像形成卤化银颗粒的层的光。 蓝光反射层不含蓝色吸收染料,并且含有厚度在0.12至0.15μm,平均长宽比大于15,涂层覆盖率为0.4至1.5g / m 2的片状卤化银颗粒, m 2,并且由基于银的大于50mol%的溴化物形成,并且包含潜影形成的具有最大灵敏度的卤化银颗粒的层包含0.00-0.5g / m 2的随机取向的卤化银颗粒 基于银的大于50摩尔%的溴化物,具有在0.05至0.5μm范围内的等效圆直径并且没有吸附的蓝色吸收染料,其中蓝色光反射层中的片状卤化银颗粒的组合涂层覆盖 并且含有潜影形成卤化银颗粒的层中无规取向的卤化银颗粒最大灵敏度为银,至少为0.5g / m 2。
摘要:
A multicolor photographic element comprising a support bearing a cyan dye image-forming unit comprising at least one red-sensitive silver halide emulsion layer having associated therewith at least one cyan dye-forming coupler, a magenta dye image-forming unit comprising at least one green-sensitive silver halide emulsion layer having associated therewith at least one magenta dye-forming coupler, a yellow dye image-forming unit comprising at least one blue-sensitive silver halide emulsion layer having associated therewith at least one yellow dye-forming coupler, wherein at least one of said emulsion layers comprises tabular grains having {111} major faces containing greater than 50 mole percent bromide, and accounting for greater than 50 percent total grain projected area precipitated in a peptizer that is a water dispersible cationic starch, and contains a fragmentable electron donating sensitizer.
摘要:
This invention provides a multicolor photographic element comprising a support bearing a cyan dye image-forming unit comprising at least one red-sensitive silver halide emulsion layer having associated therewith at least one cyan dye-forming coupler, a magenta dye image-forming unit comprising at least one green-sensitive silver halide emulsion layer having associated therewith at least one magenta dye-forming coupler, a yellow dye image-forming unit comprising at least one blue-sensitive silver halide emulsion layer having associated therewith at least one yellow dye-forming coupler, wherein at least one of said emulsion layers comprises large tabular grains having an average equivalent circular diameter of greater than 3 µm and contains a one equivalent image dye-forming coupler and a fragmentable electron donating compound of the formula: X-Y' or a compound which contains a moiety of the formula -X-Y'; wherein X is an electron donor moiety, Y' is a leaving proton H or a leaving group Y, with the proviso that if Y' is a proton, a base, β - , is covalently linked directly or indirectly to X, and wherein:
1) X-Y' has an oxidation potential between 0 and about 1.4V; and 2) the oxidized form of X-Y' undergoes a bond cleavage reaction to give the radical X • and the leaving fragment Y'; and, optionally, 3) the radical X • has an oxidation potential ≤-0.7V (that is, equal to or more negative than about -0.7V).
摘要:
Disclosed is a color silver halide photographic element comprising a support bearing:
(1) a light sensitive silver halide emulsion layer; (2) a nitrogen heterocycle with a minimum of three heteroatoms that does not react with oxidized developer, does not contain free thiol substituents, and has a ClogP sufficient to increase the photographic speed of said element compared to the same element without the compound, said heterocycle compound located either in said light sensitive layer or in a layer adjacent to it; and (3) an ETARC, in or adjacent to said light sensitive silver halide emulsion layer, that releases, upon reaction with oxidized developer, an electron transfer agent having a ClogP of at least 2.40. The invention provides improved light sensitivity.
摘要:
Disclosed is a color silver halide photographic element comprising a support bearing:
(1) a light sensitive silver halide emulsion layer; (2) a nitrogen heterocycle with a minimum of three heteroatoms that does not react with oxidized developer, does not contain free thiol substituents, and has a ClogP sufficient to increase the photographic speed of said element compared to the same element without the compound, said heterocycle compound located either in said light sensitive layer or in a layer adjacent to it; and (3) a light reflecting silver halide material; provided that the heterocycle compound and the light reflecting material are located either (a) in different layers of the element located close enough to each other so that a super-additive speed increase is realized or (b) in the same light sensitive layer. The invention provides improved light sensitivity.
摘要:
A multicolor photographic element comprising a support bearing a cyan dye image-forming unit comprising at least one red-sensitive silver halide emulsion layer having associated therewith at least one cyan dye-forming coupler, a magenta dye image-forming unit comprising at least one green-sensitive silver halide emulsion layer having associated therewith at least one magenta dye-forming coupler, a yellow dye image-forming unit comprising at least one blue-sensitive silver halide emulsion layer having associated therewith at least one yellow dye-forming coupler, wherein at least one of said silver halide emulsion layers contains a tabular grain silver halide emulsion having a halide content of at least 95% bromide and less than about 5% iodide, said iodide being substantially uniformly distributed in the silver halide grains of said emulsion, and said emulsion is sensitized with a fragmentable electron donor of the formula X-Y' or an electron donor which contains an -XY' moiety; wherein
X is an electron donor moiety, Y' is a leaving proton H or a leaving group Y, with the proviso that if Y' is a proton, a base, β - , is covalently linked directly or indirectly to X, and wherein:
1) X-Y' has an oxidation potential between 0 and about 1.4 V; and 2) the oxidized form of X-Y' fragments to give the radical X • and the leaving fragment Y'; and, optionally, 3) the radical X • has an oxidation potential ≤-0.7V.