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公开(公告)号：US06673529B1
公开(公告)日：2004-01-06
申请号：US10193341
申请日：2002-07-11
申请人： Richard L. Daubendiek , Jon N. Eikenberry , Barbara J. Fisher , Timothy R. Gersey , Joseph G. Lighthouse , Douglas L. Oehlbeck
发明人： Richard L. Daubendiek , Jon N. Eikenberry , Barbara J. Fisher , Timothy R. Gersey , Joseph G. Lighthouse , Douglas L. Oehlbeck
IPC分类号： G03C1005
CPC分类号： G03C1/0051 , G03C2001/0055 , G03C2001/0058 , G03C2001/03511 , G03C2200/03
摘要： A process of preparing a high bromide tabular grain emulsion comprising a dispersion medium and silver halide grains including tabular grains having {111} major faces and an aspect ratio of at least 2, which contain greater than 50 mole percent bromide, based on silver, and which account for greater than 50 percent of total grain projected area, where such tabular grains have an average aspect ratio of at least 5, the process comprising (i) in a grain nucleation step creating in a dispersing medium tabular silver halide grain nuclei containing parallel twin planes and (ii) in a grain growth step subsequently growing the tabular grain nuclei into tabular grains in a silver halide reaction vessel by adding a silver ion source and a halide ion source to the reaction vessel and precipitating silver halide onto the tabular grain nuclei, wherein thiocyanate ion is introduced into the silver halide reaction vessel prior to the addition of at least the final 10 mole percent of the total silver added to the reaction vessel, and further wherein the introduced thiocyanate ion concentration is at most 0.4 mole %, based on the total silver added to the reaction vessel. Use of thiocyanate during grain precipitation result in increased aspect ratio without degrading morphological purity.
摘要翻译： 一种制备高溴化物片状颗粒乳剂的方法，包括分散介质和卤化银颗粒，所述卤化银颗粒包括具有{111}主面和具有至少2的长宽比的片状颗粒，其含有基于银的大于50摩尔百分比的溴化物，以及 其占总颗粒投影面积的大于50％，其中这种片状颗粒具有至少5的平均纵横比，其方法包括（i）在分散介质中产生平均粒度的卤化银颗粒核的晶粒成核步骤 （ii）在晶粒生长步骤中，随后通过向反应容器中加入银离子源和卤离子源并将卤化银沉淀在片状晶粒核上，随后将片状晶粒核生长成卤化银反应容器中的片状颗粒 ，其中硫氰酸根离子在添加至少最终的10摩尔％的总银之前被引入到卤化银反应容器中 加入到反应容器中，进一步其中导入的硫氰酸根离子浓度至多为0.4摩尔％，基于添加到反应容器中的总银。 颗粒沉淀过程中硫氰酸盐的使用导致纵横比增加而不会降低形态纯度。
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公开(公告)号：US5837439A
公开(公告)日：1998-11-17
申请号：US812089
申请日：1997-03-04
摘要： The invention relates to a solution for forming silver halide emulsions comprising water, a gelatin containing less than 30 micromoles of methionine per gram of gelatin, and at least one antifoamant of Formula I (H.sub.3 C).sub.3 Si--(OSi(CH.sub.3).sub.2).sub.m --OSi(CH.sub.3).sub.3 wherein m is the average number of dimethyl siloxane units.
摘要翻译： 本发明涉及一种用于形成卤化银乳剂的溶液，其包含水，每克明胶中含有少于30微摩尔甲硫氨酸的明胶和至少一种式I（H3C）3Si-（OSi（CH3）2）m- OSi（CH3）3，其中m是二甲基硅氧烷单元的平均数。
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3.发明授权Process and apparatus for reproducible production of non-uniform product distributions 失效用于可重复生产不均匀产品分布的方法和装置
公开(公告)号：US5334496A
公开(公告)日：1994-08-02
申请号：US946760
申请日：1992-09-17
摘要： A method for the reproducible production of nonuniform distributions of polymolecular association clusters, each of the clusters comprising a plurality of a species A in association with a single species B, is disclosed. Species A is preferably a photographic dye and Species B is preferably a silver halide particle. The method comprises: (a) mixing a suspension of particles of species B in a vessel; (b) flowing a portion of the suspension through an isolated reaction zone; (c) introducing species A into the isolated reaction zone; and (d) returning the portion of the suspension including the introduced species A to the vessel. In another aspect, the invention relates to an apparatus for carrying out the foregoing process.
摘要翻译： 公开了一种用于可重复地产生多分子缔合簇的不均匀分布的方法，每个簇包含与单个种类B相关的多个物种A. 物种A优选为照相染料，物种B优选为卤化银颗粒。 该方法包括：（a）将物种B的颗粒悬浮液混合在容器中; （b）使一部分悬浮液流过分离的反应区; （c）将物质A引入分离的反应区; 和（d）将包括引入的物质A的悬浮液的部分返回到容器中。 另一方面，本发明涉及一种用于执行上述过程的装置。
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公开(公告)号：US5241992A
公开(公告)日：1993-09-07
申请号：US913117
申请日：1992-07-14
CPC分类号： B01F7/16 , B01F15/0203 , B01F3/04262 , B01F3/04531 , B01F5/0413 , B01F5/0475 , B01F5/048 , B01F2003/04326 , B01F2003/0468 , Y10T137/8766
摘要： A fluid (liquid or gas) distributing apparatus comprises a series of annular conduits positioned concentrically and close to a region for mixing or performing a reaction. Each annular conduit has a plurality of orifices associated therewith which are spaced circumferentially and symmetrically proximate to the region and each orifice is positioned to deliver a liquid stream to the region. A feed line connects with a plurality of branch lines, each branch line connecting with one of the annular conduits. Valves in the lines control the flow of liquid to the annular conduits. The conduits in the series are arranged for use in the method of the invention in a sequence, beginning with the conduit of greatest flow resistance when the feed rate is low and continuing successively with the conduits of lower flow resistance as the fixed rate increases. The resulting uniform flow rates through the orifices and avoidance of back flow contribute to high yield and quality of product.
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公开(公告)号：UST103603I4
公开(公告)日：1983-11-01
申请号：US447378
申请日：1982-12-06
CPC分类号： G03C1/015 , B01F9/00 , B01F9/02 , G03C2200/09 , Y10T137/3021 , Y10T137/3084
摘要： A process is disclosed for preparing a silver halide emulsion comprised of serially receiving a silver halide emulsion at an upstream location, supplying the silver halide emulsion in a further prepared form at a downstream location, and transporting the silver halide emulsion between the upstream and downstream locations while it is being further prepared. The silver halide emulsion is divided into discrete segments as it is received at the upstream location. The discrete segments of the silver halide emulsion are transported between the upstream and downstream locations in the sequence of their formation. The emulsion can be finished as it is transported to the downstream location. The silver halide grains can be shelled during transport. In still another application a converted-halide emulsion can be formed during transport to the downstream location. An apparatus for the preparation of the silver halide emulsion is comprised of a tubular helix capable of being oriented so that its longitudinal axis is substantially horizontal. The tubular helix defines an inlet and an outlet. Means are provided for rotating the tubular helix about its longitudinal axis, and means are provided for supplying silver halide emulsion to the inlet of said tubular helix when the inlet lies below the longitudinal axis.
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