公开(公告)号：US6043019A

公开(公告)日：2000-03-28

申请号：US218691

申请日：1998-12-22

申请人： Ramesh Jagannathan ,  Rajesh V. Mehta ,  Steven P. Szatynski ,  Wai K. Lam

发明人： Ramesh Jagannathan ,  Rajesh V. Mehta ,  Steven P. Szatynski ,  Wai K. Lam

IPC分类号： G03C1/015 ,  G03C1/005 ,  G03C1/035

CPC分类号： G03C1/0051 ,  G03C1/015

摘要： A method is disclosed of manufacturing a radiation-sensitive tabular grain emulsion comprised of (a) providing in a stirred reaction vessel a host tabular grain emulsion containing greater than 50 mole percent bromide, based on silver, and a speed enhancing amount of iodide and (b) then introducing a silver salt solution into the stirred reaction vessel, wherein (1) the silver salt solution is introduced into the stirred reaction vessel at a rate sufficient to create a new grain population, (2) halting introduction of the silver salt solution for a time sufficient to allow the new grain population to be ripened out, and (3) repeating steps (1) and (2) from 3 to 20 times until silver introduced in steps (1) and (2) amounts to from 5 to 50 percent of total silver forming the radiation-sensitive tabular grain emulsion.

摘要翻译： 公开了一种制造辐射敏感性片状颗粒乳剂的方法，其包括（a）在搅拌的反应容器中提供含有大于50摩尔百分比的溴化银的基于银的主体片状颗粒乳剂，以及加速量的碘化物和（ b）然后将银盐溶液引入搅拌反应容器中，其中（1）将银盐溶液以足以产生新的颗粒群的速率引入搅拌的反应容器中，（2）停止引入银盐溶液 足以允许新粮种群成熟，并且（3）重复步骤（1）和（2）3至20次，直到步骤（1）和（2）中引入的银等于5至 形成辐射敏感片状颗粒乳液的总银的50％。

公开(公告)号：US5364754A

公开(公告)日：1994-11-15

申请号：US968548

申请日：1992-10-29

申请人： Sang H. Kim ,  Anthony Adin ,  Richard E. Beal ,  Jerzy A. Budz ,  Wai K. Lam ,  Mark A. Whitson

发明人： Sang H. Kim ,  Anthony Adin ,  Richard E. Beal ,  Jerzy A. Budz ,  Wai K. Lam ,  Mark A. Whitson

IPC分类号： G03C1/015 ,  G03C1/035 ,  G03C1/07 ,  G03C1/34 ,  G03C1/005

CPC分类号： G03C1/346 ,  G03C1/07

摘要： This invention provides a method of preparing a silver halide photographic emulsion which comprises adding to the silver halide emulsion before or during precipitation a non-labile chalcogen compound represented by Formula I:R.sup.1 --X.sup.1 --X.sup.2 --R.sup.2 (Formula I)It further provides a silver halide photographic emulsion prepared by the above method.

摘要翻译： 本发明提供一种制备卤化银照相乳剂的方法，该方法包括在沉淀之前或期间向式I中所示的非不稳定硫属化合物（R1-X1-X2-R2）（式I）加入卤化银乳剂。 卤化银照相乳剂通过上述方法制备。

公开(公告)号：US5380642A

公开(公告)日：1995-01-10

申请号：US173300

申请日：1993-12-22

申请人： Michael R. Roberts ,  Wai K. Lam ,  Wayne A. Bowman ,  John E. Keevert, Jr. ,  Byron H. Rubin

发明人： Michael R. Roberts ,  Wai K. Lam ,  Wayne A. Bowman ,  John E. Keevert, Jr. ,  Byron H. Rubin

IPC分类号： G03C1/015 ,  G03C1/005 ,  G03C1/035 ,  G03C1/047 ,  G03C1/053 ,  G03C1/07 ,  G03C1/04

CPC分类号： G03C1/053 ,  G03C1/0051 ,  G03C1/047 ,  G03C2001/0055 ,  G03C2001/03594

摘要： A process for preparing a thin tabular grain silver halide emulsion comprised of silver halide grains which have a halide content of at least 50 mole percent bromide, wherein tabular grains of less than 0.15 micrometers in thickness and having an aspect ratio of greater than 8 account for greater than 50 percent of the total grain projected area, comprises the steps of nucleating the silver halide grains with a gelatino-peptizer or with the use of certain synthetic polymers that serve as effective nucleation peptizers and then growing the silver halide grains with the use of either a gelatino-peptizer or certain synthetic polymers that serve as effective growth peptizers.

摘要翻译： 一种制备由卤化银颗粒组成的薄片状颗粒卤化银乳剂的方法，该卤化银颗粒的卤化物含量至少为50％（摩尔）溴化物，其中厚度小于0.15微米，长宽比大于8的片状颗粒占据 占总颗粒投影面积的大于50％的步骤包括用明胶胶溶剂将卤化银颗粒成核的步骤或使用某些合成聚合物作为有效的成核胶溶剂，然后使用 用作有效成长胶溶剂的明胶胶溶剂或某些合成聚合物。

公开(公告)号：US06322961B1

公开(公告)日：2001-11-27

申请号：US09666268

申请日：2000-09-21

申请人： Wai K. Lam ,  Roger Lok ,  David W. Sandford

发明人： Wai K. Lam ,  Roger Lok ,  David W. Sandford

IPC分类号： G03C106

CPC分类号： G03C1/09 ,  G03C7/3022

摘要： A color reversal photographic element is disclosed comprising a support having coated thereon a silver halide emulsion layer comprising a silver halide emulsion chemically sensitized in the presence of an organomercapto Au(I) complex having the formula [L—Au—L]M wherein M is a cationic counter ion and each L is an organomercapto ligand which has antifogging, stabilizing or sensitizing properties, and a rapid sulfiding agent represented by structure SS-1 wherein each of the R1, R2, R3, and R4 groups independently represents an alkylene, cycloalkylene, carbocyclic arylene, heterocyclic arylene, alkarylene or aralkylene group; or taken together with the nitrogen atom to which they are attached, R1 and R2 or R3 and R4 can complete a 5- to 7-membered heterocyclic ring; and each of the B1, B2, B3, and B4 groups independently is hydrogen or represents a carboxylic, sulfinic, sulfonic, hydroxamic, mercapto, sulfonamido or primary or secondary amino nucleophilic group, with the proviso that at least one of the B1R1 to B4R4 groups contains the nucleophilic group bonded to a urea nitrogen atom through a 1- or 2-membered chain. The use of the combination of the two classes of sensitizers of the present invention makes it possible to sensitize the silver halide emulsions employed in color reversal elements at a wider range of temperature. This robustness to temperature translates to less variable performance of the silver halide emulsion. Additionally, the use of individual gold and sulfur sensitizers advantageously makes it possible to sensitize silver halide reversal photographic elements such that the sulfur to gold ratio can be varied independently.

摘要翻译： 公开了一种彩色反转照相元件，其包括在其上涂覆有卤化银乳剂层的载体，所述卤化银乳剂层包含在具有所述形成结构的有机巯基Au（I）络合物的存在下化学增感的卤化银乳剂，M是阳离子抗衡离子，并且每个L是 具有防雾，稳定或敏化性能的有机巯基配体和由结构SS-1表示的快速硫化剂，其中R1，R2，R3和R4各自独立地表示亚烷基，亚环烷基，碳环亚芳基，杂环亚芳基，亚烷基或亚芳基 组; 或与它们所连接的氮原子一起取代，R1和R2或R3和R4可以完成5-至7-元杂环; B1，B2，B3和B4各自独立地为氢或表示羧基，亚磺酸，磺酸，异羟肟酸，巯基，亚磺酰氨基或伯或仲氨基亲核基团，条件是至少一个B1R1至B4R4 基团通过1-或2-元链包含与尿素氮原子键合的亲核基团。 使用本发明的两类敏化剂的组合使得可以在更宽的温度范围内使用在彩色反转元件中的卤化银乳剂敏化。 对于温度的这种鲁棒性意味着卤化银乳剂的可变性能变小。 此外，使用单独的金和硫敏化剂有利地使得可以使卤化银反转照相元件敏化，使得硫与金的比率可以独立地变化。

公开(公告)号：US5389510A

公开(公告)日：1995-02-14

申请号：US169832

申请日：1993-12-16

申请人： Carl R. Preddy ,  Wai K. Lam ,  Roger Lok

发明人： Carl R. Preddy ,  Wai K. Lam ,  Roger Lok

IPC分类号： G03C7/392 ,  G03C1/005 ,  G03C1/015 ,  G03C1/10 ,  G03C1/34

CPC分类号： G03C1/34 ,  G03C1/0051 ,  G03C1/10 ,  G03C1/015

摘要： The present invention relates to a photographic element comprising a silver halide emulsion, the emulsion comprising silver halide grains which contain an alkynylamine dopant. The presence of the alkynylamine dopant imparts to the photographic element the advantageous characteristic of increased sensitivity.

摘要翻译： 本发明涉及包含卤化银乳剂的照相元件，该乳液包含含有炔基胺掺杂剂的卤化银颗粒。 炔基胺掺杂剂的存在赋予照相元件增加灵敏度的有利特征。