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1. 发明授权

US5612175A Epitaxially sensitized tabular grain emulsions exhibiting enhanced speed and contrast 失效
标题翻译：显示出增强的速度和对比度的外源敏化的片状颗粒乳剂
公开(公告)号：US5612175A
公开(公告)日：1997-03-18
申请号：US592169
申请日：1996-01-26
申请人： Lyn M. Eshelman , Paul J. Madigan , Joseph C. Deaton , David A. Dumont , Michael G. Antoniades , Sharon G. Johnston
发明人： Lyn M. Eshelman , Paul J. Madigan , Joseph C. Deaton , David A. Dumont , Michael G. Antoniades , Sharon G. Johnston
IPC分类号： G03C1/035 , G03C1/005 , G03C1/09 , G03C1/12 , G03K1/035
CPC分类号： G03C1/0051 , G03C1/09 , G03C1/12
摘要： A radiation-sensitive spectrally sensitized tabular grain emulsion is disclosed which exhibits improved speed and contrast. The tabular grains have {111} major faces, contain greater than 70 mole percent bromide and up to 10 mole percent iodide, based on silver, account for greater than 90 percent of total grain projected area, and have an average equivalent circular diameter of at least 3.5 .mu.m. The tabular grains have latent image forming chemical sensitization sites on their surfaces including epitaxially deposited silver halide protrusions of a face centered cubic rock salt crystal lattice structure forming epitaxial junctions with the tabular grains. The protrusions are restricted to those portions of the tabular grains located nearest peripheral edges of and accounting for less than 10 percent of the {111} major faces of the tabular grains, accounting for less than 5 percent of total silver forming the tabular grains and protrusions, containing a silver chloride concentration at least 10 mole percent higher than that of the tabular grains, and contain at least 1 mole percent iodide, based on silver in the protrusions.
摘要翻译：公开了辐射敏感的光谱敏化片状颗粒乳剂，其显示出改进的速度和对比度。片状颗粒具有{111}主面，含有大于70摩尔百分比的溴和基于银的高达10摩尔％的碘，占总颗粒投影面积的大于90％，并且具有平均当量圆直径至少3.5亩。片状颗粒在它们的表面上具有潜像形成的化学增感位点，包括外面沉积的卤化银突起，其表面立方岩盐晶格结构与片状颗粒形成外延结。突出部分限于位于最近周边边缘的片状颗粒的部分，并且占片状颗粒的{111}主面的少于10％，占形成片状颗粒和突起的总银的小于5％，其含有比片状颗粒高至少10摩尔％的氯化银浓度，并且基于突起中的银含有至少1摩尔％的碘化物。

2. 发明授权

US5597687A Sensitizing dye combination for photographic materials 失效
标题翻译：敏化染料组合用于摄影材料
公开(公告)号：US5597687A
公开(公告)日：1997-01-28
申请号：US545368
申请日：1995-10-19
申请人： Thomas R. Dobles , David A. DuMont , Paul B. Gilman , Sang H. Kim , Steven G. Link , Richard L. Parton
发明人： Thomas R. Dobles , David A. DuMont , Paul B. Gilman , Sang H. Kim , Steven G. Link , Richard L. Parton
IPC分类号： G03C1/08 , G03C1/29
CPC分类号： G03C1/29
摘要： A supersensitizing dye combination for silver halide photographic materials is disclosed. The combination is of a first dye according to the formula: ##STR1## Z.sub.1 and Z.sub.2 each independently represents the atoms necessary to complete a substituted or unsubstituted heterocyclic nucleus,each L independently represents a substituted or unsubstituted methine group,n is a positive integer of from 1 to 4,p and q each independently represents 0 or 1,X represents a cation as needed to balance the charge of the molecule,A and A' each independently represents a divalent linking group such that at least one of H--A--SO.sub.3 H and H--A'--SO.sub.3 H would each have a log P value that is more negative than -0.3, anda second dye, having an oxidation potential that is at least about 0.08 volts less positive than the oxidation potential of the first dye and a reduction potential that is equal to or more negative than the reduction potential of the first dye, according to the formula: ##STR2## Z.sub.3 and Z.sub.4 each independently represents the atoms necessary to complete a substituted or unsubstituted heterocyclic nucleus,each L independently represents a substituted or unsubstituted methine group,m is a positive integer of from 1 to 4,r and s each independently represents 0 or 1,X' represents a counterion as needed to balance the charge of the molecule,R.sub.3 and R.sub.4 each independently represents substituted or unsubstituted alkyl or substituted or unsubstituted aryl.
摘要翻译：公开了用于卤化银照相材料的超敏化染料组合。该组合是根据下式的第一种染料：并且表示完成取代或未取代的杂环核所需的原子，每个L独立地表示取代或未取代的次甲基，n是1至4的正整数，p和 q各自独立地表示0或1，X表示用于平衡分子的电荷所需的阳离子，A和A'各自独立地表示二价连接基团，使得HA-SO 3 H和H-A'-SO 3 H中的至少一个将每个具有比-0.3更负的对数P值，并且具有比第一染料的氧化电位小至少约0.08伏的氧化电位的第二染料和等于或等于或等于或等于根据下列公式，阴性比第一种染料的还原电位：完成取代或未取代的杂环核所必需的e原子，每个L独立地表示取代或未取代的次甲基，m为1至4的正整数，r和s各自独立地表示0或1，X'表示平衡分子电荷所需的抗衡离子，R 3和R 4各自独立地表示取代或未取代的烷基或取代或未取代的芳基。

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