公开(公告)号：US5308738A

公开(公告)日：1994-05-03

申请号：US894451

申请日：1992-06-05

申请人： Rene M. De Keyzer ,  Johan J. Lamotte

发明人： Rene M. De Keyzer ,  Johan J. Lamotte

IPC分类号： G03C1/035 ,  G03C1/485 ,  G03C8/06 ,  G03C8/08 ,  G03C8/32 ,  G03C5/54

CPC分类号： G03C8/06

摘要： The present invention provides a photographic material comprising on a support an image-receiving layer containing physical development nuclei, a photosensitive silver halide emulsion layer and a substantially light insensitive layer containing silver salt characterized in that said photosensitive silver halide emulsion layer contains silver halide particles having an average diameter of at least 0.6 .mu.m, said photosensitive silver halide emulsion layer being located between said image-receiving layer and said substantially light insensitive layer and said substantially light insensitive layer having a speed of at least a factor 10 less than said photosensitive silver halide emulsion layer. The present invention also provides a method for making an image therewith. The photographic material of the present invention is of high speed and can yield direct positive image with a low density in the non-image areas.

摘要翻译： 本发明提供了一种在载体上包含含有物理显影核的图像接收层的感光材料，感光卤化银乳剂层和含有银盐的基本上不透光的层，其特征在于所述光敏卤化银乳剂层含有卤化银颗粒， 平均直径至少为0.6μm，所述感光卤化银乳剂层位于所述图像接收层和所述基本上不透光的层之间，并且所述基本上不透光的层的速度至少比所述感光性银低10倍 卤化物乳剂层。 本发明还提供了一种用于制作图像的方法。 本发明的照相材料是高速度的，并且可以在非图像区域中产生低密度的直接正像。