-
1.发明授权Method for controlling characteristics curve shape for variable contrast photographic elements 失效用于控制可变对比度照相元件特征曲线形状的方法
公开(公告)号：US5376523A
公开(公告)日：1994-12-27
申请号：US131498
申请日：1993-10-04
申请人： Marian S. Henry , Sandra M. Finn , Harry J. Price
发明人： Marian S. Henry , Sandra M. Finn , Harry J. Price
CPC分类号： G03C1/12
摘要： A process for controlling the silver halide grain-to-grain distribution of a variable contrast dye in a light sensitive silver halide emulsion layer of a variable contrast photographic element, and thereby adjusting the low contrast characteristic curve of the element, is disclosed comprising the process steps of adding a green variable contrast sensitizing dye of the following formula (I) to a silver halide emulsion for a variable contrast photographic element, adding a blue sensitizing dye of the following formula (II) to the same silver halide emulsion, and coating the emulsion on a support. In the process, the green and blue sensitizing dyes are added to the emulsion at substantially the same time, and the green dye is added in an amount less than that required to impart maximum sensitivity to all of the silver halide in the emulsion. ##STR1## In formula (I), R.sup.1, R.sup.2, R.sup.6 and R.sup.7 each independently represent hydrogen, halogen, hydroxy, or substituted or unsubstituted alkyl, alkenyl, alkoxy, alkylamino, alkylthio, aryl, aryloxy, arylamino or arylthio. R.sup.3, R.sup.4 and R.sup.5 each independently represent substituted or unsubstituted alkyl or aryl. X represents a counterion as needed to balance the charge of the molecule. In formula (II), Z represents the atoms necessary to complete an optionally further substituted five- or six-membered heterocyclic ring, R.sup.8 represents substituted or unsubstituted alkyl or aryl, and R.sup.9 represents hydrogen, substituted or unsubstituted alkyl or aryl, or a heterocycle.
摘要翻译： 公开了一种用于控制可变造影照相材料的感光卤化银乳剂层中的可变造影染料的卤化银颗粒对颗粒分布的方法，从而调节元件的低对比度特性曲线，其包括该方法 将下式（I）的绿色可变对比度敏化染料添加到可变造影照相材料的卤化银乳剂的步骤中，将下式（II）的蓝色增感染料加入到相同的卤化银乳剂中， 在支撑物上的乳液。 在此过程中，将绿色和蓝色增感染料基本上同时加入到乳液中，绿色染料的添加量小于对乳液中所有卤化银赋予最大灵敏度所需的量.R1， R 2，R 6和R 7各自独立地表示氢，卤素，羟基或取代或未取代的烷基，烯基，烷氧基，烷基氨基，烷硫基，芳基，芳氧基，芳基氨基或芳硫基。 R 3，R 4和R 5各自独立地表示取代或未取代的烷基或芳基。 X表示平衡分子电荷所需的抗衡离子。 在式（II）中，Z表示完成任选进一步取代的五元或六元杂环所必需的原子，R8表示取代或未取代的烷基或芳基，R9表示氢，取代或未取代的烷基或芳基或杂环 。
-
公开(公告)号：US5037732A
公开(公告)日：1991-08-06
申请号：US399723
申请日：1989-08-28
摘要： Photographic silver halide emulsions are disclosed comprised of radiation sensitive silver halide grains exhibiting a face centered cubic crystal lattice structure internally containing a carbonyl coordination ligand and a transition metal chosen from groups 8 and 9 of the periodic table of elements.
-
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。
-
-
搜索结果
3 条记录 (耗时 0.011 秒)
