Direct positive silver halide photosensitive material and method

Details Direct positive silver halide photosensitive material and method Direct positive silver halide photosensitive material and method

1988-03-21

1990-08-28

Michl, Paul R.

Radiation imagery chemistry: process, composition, or product th

Color imaging process

Using identified radiation sensitive composition in the...

430410, 430547, 430598, G03C 700, G03C 1485

Patent

active

049524836

ABSTRACT:
The present invention relates to a direct positive silver halide photosensitive material and a method for forming a direct positive image. By the use of a novel nucleating agent having a specific structural formula, the present invention provides a direct positive silver halide photosensitive material with an increased Dmax value and a decreased Dmin value, as compared with the use of the conventional nucleating agents, even if a small amount of the novel nucleating agent is used, and does not substantially reduce the Dmax value, even if the photosensitive material is kept in a high-humidity state for a long time before exposure.

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