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    • 7. 发明授权
    • Silver ion sequester and release agent
    • 银离子螯合剂和脱模剂
    • US06689335B1
    • 2004-02-10
    • US10324234
    • 2002-12-19
    • Joseph F. BringleyRoger LokNancy B. Liebert
    • Joseph F. BringleyRoger LokNancy B. Liebert
    • C01B1516
    • C01B25/37G03C1/035G03C1/43G03C2001/03517
    • A silver ion sequester and release agent is described which comprises a silver ion exchangeable material of the formula: M(H1−x−yAgxM′yPO4)2.nH2O; where M is Zr, Ti, Sn, Ge or Hf or any combination thereof; M′ is an Alkali or alkaline earth metal; x is a number from 0.10 to 0.80; y is a number from 0.15 to 0.85; (x+y) is a number from 0.25 to 0.95; and n is a rational number between 0 and 10. Processes for preparing such silver ion sequester and release agent material are also described comprising combining in an aqueous medium a crystalline or amorphous metal hydrogen phosphate ion exchange host material of the formula M(HPO4)2.nH2O with less than 2 molar equivalents of silver ions relative to the amount of ion exchange host material such that silver ions are exchanged for protons in the host material, and adding a base compound to the aqueous medium to achieve a pH of at least 4.4 and sequester at least 95% of the combined silver ions into the host material. Further described are photographic elements comprising a support bearing one or more hydrophilic colloid layers including at least one photographic silver halide emulsion layer, wherein one or more layers contain such a silver ion sequester and release agent which sequesters silver ions prior to photographic processing and releases silver ions upon exposure to photographic processing solutions.
    • 描述了银离子螯合剂和脱模剂,其包含下式的银离子可交换材料:其中M是Zr,Ti,Sn,Ge或Hf或其任何组合; M'是碱金属或碱土金属; x是从0.10到0.80的数字; y为0.15〜0.85的数; (x + y)为0.25〜0.95的数; 还描述了制备这种银离子螯合剂和脱模剂材料的方法,其包括在水性介质中结合式M(HPO 4)2的结晶或无定形金属磷酸氢盐离子交换主体材料 相对于离子交换主体材料的量使用小于2摩尔当量的银离子,使得银离子在主体材料中交换为质子,并将碱性化合物加入到水性介质中以达到至少4.4的pH 并将至少95%的组合银离子螯合到主体材料中。 进一步描述的是包含承载一个或多个亲水胶体层的载体的照相元件,所述亲水胶体层包括至少一个照相卤化银乳剂层,其中一个或多个层含有这样的银离子螯合物和释放剂,其在照相处理之前螯合银离子并释放银 暴露于照相处理溶液中的离子。
    • 8. 发明授权
    • Imaging element containing incorporated photographically useful compounds
    • US06656672B2
    • 2003-12-02
    • US10036672
    • 2001-12-21
    • Joseph F. BringleyManju Rajeswaran
    • Joseph F. BringleyManju Rajeswaran
    • G03C108
    • G03C1/005G03C1/035G03C1/42
    • A radiation sensitive imaging element is described comprising a support bearing one or more hydrophilic colloid layers, wherein a photographically useful compound is incorporated into at least one hydrophilic colloid layer in the form of a self-assembled composition comprising a substantially homogeneous and ordered array of the photographically useful compound and silver and halide atoms, wherein the average minimum distance from each Ag atom in the composition to an atom of the photographically useful compound in the composition is less than 50 Å. In a particular embodiment, the self-assembled composition is of the general unit cell formula AgaXb(PUC*)c.nH2O where X represents halogen atoms selected from Cl, Br, and I or any combination thereof, and PUC* is a photographically useful compound containing at least one positively charged onium ion group; and wherein a is an integer from 1-10 and b is an integer from 2-18, with the proviso b is greater than a, and the silver and halide atoms form silver halide sublattice structures having a net negative charge; c is an integer such that the onium ion group containing photographically useful compound forms a positively-charged sublattice which stabilizes the negatively charged silver halide sublattice, wherein charge neutrality for the composition is upheld; and n is any number from 0 to 10. The invention provides novel materials and a method of incorporating active chemistry compounds such as developers or development inhibitors directly into a photographic imaging element. The invention further provide materials, and a method for preparing materials, comprising silver halide co-crystallized with photographic useful compound molecules thereby creating a unique crystal lattice. The invention described herein provides materials in which active chemistry and silver halide are present together in an ordered array, or crystal lattice, separated by distances measured on the atomic scale (i.e., in angstroms (Å), where 1 Å=10−4 &mgr;m).
    • 10. 发明授权
    • Photographic elements containing composite reflective grains
    • 含有复合反射晶粒的摄影元件
    • US5998115A
    • 1999-12-07
    • US292500
    • 1999-04-15
    • Joseph F. BringleyJames A. FridayThomas B. Brust
    • Joseph F. BringleyJames A. FridayThomas B. Brust
    • G03C7/00G03C1/035G03C1/09G03C1/74G03C1/76G03C7/30G03C1/46
    • G03C7/3029G03C7/3022
    • A photographic element is disclosed that relies upon high bromide silver halide grains that are sulfur and/or gold sensitized for latent image formation. Coated to receive exposing radiation directly from a layer containing the latent image forming grains is a non-imaging layer containing (a) tabular silver halide grains (i) comprised of greater than 50 mole percent bromide, based on silver, (ii) having a thickness in the range of from 0.03 to 0.20 .mu.m, and (iii) having an average aspect ratio of greater than 20, and (b) silver halide epitaxy selectively positioned adjacent edges of said tabular grains in said non-imaging layer, said silver halide epitaxy (i) containing greater than 50 mole percent chloride, based on silver, and (ii) accounting for from 0.1 to 50 percent of the total silver in the composite grains.
    • 公开了一种照相材料,其依赖于用于潜像形成的硫和/或金敏化的高溴化银卤化物颗粒。 涂覆以从包含潜像形成颗粒的层直接接收曝光辐射是非成像层,其包含(a)由大于50摩尔百分比的溴化银(基于银)构成的片状卤化银颗粒(i),(ii)具有 厚度在0.03至0.20μm的范围内,和(iii)具有大于20的平均纵横比,以及(b)选择性地定位在所述非成像层中所述片状颗粒的边缘附近的卤化银外延,所述银 卤化物外延(i)含有大于50摩尔百分比的氯化物,以银为基准,和(ii)占复合颗粒中总银的0.1%至50%。