公开(公告)号：US5709988A

公开(公告)日：1998-01-20

申请号：US399798

申请日：1995-03-07

申请人： Donald Lee Black ,  Roger Anthony Bryant ,  Mark Edward Irving

发明人： Donald Lee Black ,  Roger Anthony Bryant ,  Mark Edward Irving

IPC分类号： G03C1/005 ,  G03C1/035

CPC分类号： G03C1/0051

摘要： Radiation-sensitive emulsions are disclosed comprised of high bromide tabular grains containing a peripheral band of increased iodide concentration. The tabular grains exhibit an average equivalent circular diameter of at least 2.0 .mu.m and are of a face centered cubic crystal lattice structure of the rock salt type. The tabular grains include central and peripheral regions extending between their major faces. The peripheral region is up to 0.2 .mu.m in width and contains an iodide concentration at least 2 mole percent higher than that of the central region measured at a location adjacent the peripheral region. Dislocations are present in the peripheral region to increase sensitivity and are minimized in the central region to maintain relatively constant sensitivities when pressure is applied locally.

摘要翻译： 公开了辐射敏感性乳剂，其包含含有碘化物浓度增加的周边带的高溴化物片状颗粒。 片状颗粒的平均当量圆直径至少为2.0μm，为岩盐类型的面心立方晶格结构。 片状颗粒包括在其主要面之间延伸的中心区域和周边区域。 周边区域的宽度最大为0.2μm，并且含有比邻近周边区域的位置测量的中心区域的碘浓度高至少2摩尔％的碘化物浓度。 在周边区域存在位错以提高灵敏度，并且在中心区域被最小化以在局部施加压力时保持相对恒定的灵敏度。

公开(公告)号：US5728517A

公开(公告)日：1998-03-17

申请号：US656019

申请日：1996-05-31

申请人： Roger Anthony Bryant ,  Myra Toffolon Olm ,  David Earl Fenton

发明人： Roger Anthony Bryant ,  Myra Toffolon Olm ,  David Earl Fenton

IPC分类号： G03C1/005 ,  G03C1/18 ,  G03C1/035 ,  G03C1/09

CPC分类号： G03C1/0051 ,  G03C1/18

摘要： Tabular grain emulsions of enhanced photographic sensitivity are disclosed in which the tabular grains contain a maximum surface iodide concentration along their edges and a lower surface iodide concentration within their corners than elsewhere along their edges. The grains contain a dopant capable of providing shallow electron trapping sites.

摘要翻译： 公开了增强的照相感光度的片状颗粒乳剂，其中片状颗粒沿其边缘含有最大表面碘化物浓度，并且在它们的角落内沿其边缘含有较低的表面碘化物浓度。 晶粒含有能够提供浅电子捕获位点的掺杂剂。