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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Nishiyama; Shingo
Address:
Kanagawa, JP
No. of patents:
11
Patents:












Patent Number Title Of Patent Date Issued
5874207 Pre-fogged direct-positive silver halide photographic light-sensitive material and method of pre February 23, 1999
A direct-positive silver halide light-sensitive material comprising a support having thereon at least one pre-fogged light-sensitive silver halide emulsion layer, wherein the light-sensitive material comprises a specific onium salt compound in the emulsion layer or a hydrophilic prot
5547828 Direct positive type silver halide photographic material comprising a mixture of dyes August 20, 1996
A direct positive type silver halide photographic material is described, which contains at least one compound represented by the following formula (I) and at least one cyanine dye having a pyrazolo[5,1-b]quinazolone nucleus and a cyanine heterocycle nucleus, wherein a carbon atom at
5342751 Silver halide photosensitive material August 30, 1994
A silver halide photosensitive material comprising a support having thereon a photosensitive layer comprising at least one silver halide emulsion layer and with a total silver coating amount of silver halide of 2.5 g/m.sup.2 or less, and wherein at least one of the layers of the phot
5100761 Silver halide photographic materials March 31, 1992
A silver halide photographic material comprising one or more silver halide emulsion layers and hydrophilic colloid layers, wherein at least one of the layers contains an acylhydrazine compound as described below. The instant photographic materials have high contrast negative-gradation or
5015561 Method for forming a direct positive image May 14, 1991
A method of forming a direct positive image comprising:(a) imagewise exposing a direct positive silver halide photographic material composed of a support having thereon at least one light-sensitive silver halide emulsion layer containing non-prefogged internal latent image silver halide
4939067 Silver halide photographic materials July 3, 1990
An ultra-high contrast silver halide photographic material which is suitable for daylight use and which has at least one silver halide emulsion layer on a support, wherein the emulsion layer contains cubic silver halide grains having a mean grain size of 0.15 .mu.m or less and contai
4912017 Silver halide photographic materials March 27, 1990
An ultra-high contrast silver halide photographic material which is suitable for daylight use and which has at least one silver halide emission layer on a support, wherein the emulsion layer contains cubic silver halide grains having a mean grain size of 0.15 .mu.m or less and contai
4777110 Heat developable color photographic materials October 11, 1988
A heat developable color photographic material is disclosed. The color photographic material is comprised of a support having thereon a light-sensitive mixed crystal silver haloiodide having a silver iodide content of 4 to 40 mole %, a binder and a dye-providing substance capable of
4772545 High speed silver halide photographic materials September 20, 1988
A silver halide photographic material in which a silver iodobromide emulsion having an iodide content of 2 mole % or more and an organometallic salt functioning as a development inhibitor are employed in combination, whereby an improvements in graininess and sharpness of a developed
4683192 Silver halide photographic emulsions and process for producing them July 28, 1987
A silver halide photographic emulsion containing silver halide grains, the surface of which is a (110) crystal plane substantially composed of silver bromide or silver iodobromide is disclosed. A process for producing a silver halide photographic emulsion containing silver halide grains
4628021 Heat developable color photographic materials with silver halide containing iodide December 9, 1986
A heat developable color photographic material is disclosed. The color photographic material is comprised of a support having thereon a light-sensitive mixed crystal silver haloiodide having a silver iodide content of 4 to 40 mole %, a binder and a dye-providing substance capable of










 
 
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