Method for forming an image

Details Method for forming an image Method for forming an image

1993-10-26

1994-11-29

Le, Hoa Van

Radiation imagery chemistry: process, composition, or product th

Silver halide colloid tanning process, composition, or product

430265, 430438, 430439, 430481, 430482, G03C 529

Patent

active

053689836

ABSTRACT:
A method for forming an image provides high sensitivity, high contrast, and reduced fluctuation in performance due to the deterioration of processing solutions. The method comprises processing a silver halide photographic material having on a support at least two silver halide emulsion layers having different sensitivities, with the emulsion layer closer to the support having a higher sensitivity, in a developing solution containing a di- or trihydroxybenzene compound and a 3-pyrazolidone compound or a developing solution containing a di- or trihydroxybenzene compound and an aminophenol compound in the absence of a hydrazine compound, wherein a characteristic curve obtained has a gradient (a .gamma. value) of 6.0 or more in the segment of the curve from D=0.1 to D=3.0 where D is the density.

REFERENCES:
patent: 4416980 (1983-11-01), Fujiwhara et al.
patent: 4818659 (1989-04-01), Takahashi et al.
patent: 5114836 (1992-05-01), Sato et al.
patent: 5266442 (1993-11-01), Ooms

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