Direct positive image forming method comprising developing with

Details Direct positive image forming method comprising developing with Direct positive image forming method comprising developing with

1988-09-30

1990-11-06

Michl, Paul R.

Radiation imagery chemistry: process, composition, or product th

Color imaging process

Using identified radiation sensitive composition in the...

430409, 430410, 430598, 430940, G03C 524, G03C 1405

Patent

active

049685929

ABSTRACT:
A direct positive image forming method comprising development processing an imagewise exposed photographic light-sensitive material comprising a support having thereon at least on photographic emulsion layer containing internal latent image type silver halide grains not having been previously fogged in the presence of a nucleating agent, wherein the nucleating agent comprises at least two kinds of nucleating agents and a ratio of nucleating rates thereof is at least 2.0.
In accordance with the method of the present invention, images having both a low minimum density and an extremely high maximum density can be rapidly and stably obtained using a small amount of nucleating agents.

REFERENCES:
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patent: 4323643 (1982-04-01), Mifune et al.
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patent: 4550070 (1985-10-01), Miyasaka et al.
patent: 4880729 (1989-11-01), Heki et al.
Copending Application 07/091913.

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