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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Masukawa; Toyoaki
Address:
Hino, JP
No. of patents:
23
Patents:












Patent Number Title Of Patent Date Issued
5128237 Direct positive silver halide photographic material July 7, 1992
Significant improvement in color reproduction can be achieved by a direct positive silver halide color photographic material having at least one each of a blue-sensitive, green-sensitive and a red-sensitive direct positive silver halide emulsion layer, in which material at least one of
5053325 Silver halide color photographic light-sensitive material October 1, 1991
A silver halide photographic light-sensitive material is disclosed, which contains a novel yellow coupler in its silver halide emulsion layer. The yellow coupler is represented by the following Formula I: ##STR1## wherein Y is a hydrogen bond donating group; R is an alkyl group, an a
5051347 Silver halide photographic light-sensitive material containing a novel cyan coupler September 24, 1991
A silver halide photographic light-sensitive material containing a novel cyan coupler is disclosed. The cyan coupler is represented by the following Formula I: ##STR1## wherein A represents an organic group; X represents a hydrogen atom or a group capable of splitting off upon a
5017467 Photographic material with imidazole cyan coupler May 21, 1991
A silver halide photographic light sensitive material is disclosed, which is contains a novel cyan coupler excellent in spectral absorption, absorption coefficient and fastness. The cyan coupler is represented by the following Formula I; ##STR1## wherein R.sub.1 and R.sub.2 each
4996139 Silver halide photographic light-sensitive material containing novel cyan coupler February 26, 1991
A silver halide color photographic light-sensitive material is disclosed, which has a silver halide emulsion layer containing a novel cyan coupler represented by the following Formula I: ##STR1## wherein B is an organic group comprising a carbon atom, nitrogen atom, oxygen atom o
4988614 Silver halide color photographic light-sensitive material containing novel magenta couplers January 29, 1991
A silver halide photographic light-sensitive material containing a novel magenta dye-forming coupler. The coupler is represented by the following Formula I: ##STR1## wherein R.sub.1 is a hydrogen atom or a substituent; R.sub.2 is a substituted or unsubstituted aryl group, a subst
4977073 Silver halide light-sensitive color photographic material December 11, 1990
A silver halide light-sensitive color photographic material which comprises a coupler represented by formula [I]; ##STR1## wherein A represents a coupler residue that is capable of releasing the remaining group of said coupler upon reaction with an oxidation product of a developi
4921783 Silver halide photographic light-sensitive material May 1, 1990
A silver halide photographic light-sensitive material is disclosed which comprises a silver halide emulsion layer containing a novel cyan dye-forming coupler. The photographic material is improved in color reproducibility of color images formed thereon. The coupler is represented by
4840883 Light-sensitive silver halide color photographic material containing novel cyan coupler June 20, 1989
There is disclosed a light-sensitive silver halide color photographic material containing novel cyan coupler which comprises a light-sensitive silver halide color photographic material having at least one silver halide emulsion layer on a support, characterized in that at least one l
4818672 Silver halide color photographic light-sensitive material improved in cyan image characteristics April 4, 1989
A silver halide photographic light-sensitive material containing a novel cyan dye forming coupler is disclosed. The cyan dye forming coupler is represented by the following formula. ##STR1## In the formula R.sub.1 and R.sub.2 are each a substituent, and X is a group capable of be
4788284 Diphenylimidazole type dyes November 29, 1988
A diphenylimidazole type cyan dye represented by the following Formula [I] or [II] is disclosed. The dye is capable of displaying relatively more preferable absorption characteristics so as to serve as a cyan dye, and suitable to be use in photographic, thermal transfer, ink-jet, printin
4562143 Method of forming image by means of heat development December 31, 1985
A method of forming an image by heat development of a photosensitive material comprising a support having a heat development photosensitive layer comprising imagewise exposing said layer and then bringing a non-water-permeable layer into close contact with said photosensitive layer,
4390617 Method for the formation of photographic images June 28, 1983
The present invention is directed towards a silver halide photographic material which has a reducing agent for silver halide or a precursor thereof and a compound M.sub.1 H.sub.m (PO.sub.n).sub.i.jH.sub.2 O which generates base when heat is applied. M is a metal from the Groups IA and
4373017 Photosensitive compound and photosensitive material containing it February 8, 1983
A photosensitive material having a photosensitive layer provided on a support which photosensitive layer comprises a photosensitive compound which forms a color dye directly under irradiation of ultraviolet rays, the compound being represented by the formula [i]: ##STR1## wherein
4368258 Process for preparing impregnated polymer latex compositions January 11, 1983
In the process for preparing impregnated polymer latex compositions by impregnating a hydrophobic substance in dispersed polymer particles in an aqueous polymer latex, the improvement comprises impregnating said hydrophobic substance, wherein the impregnation is effected by mixing said
4233400 Light-sensitive silver halide photographic material containing tetrazolium compounds November 11, 1980
Light-sensitive silver halide photographic materials to be treated with a hydroquinones-containing developing solution which material comprises a support and at least one hydrophilic colloidal layer coated thereon containing silver halide grains having an average grain size of 0.05 to
4210715 Light-sensitive silver halide photographic material and method of processing thereof July 1, 1980
Light-sensitive silver halide photographic materials to be treated with a hydroquinones-containing developing solution which material comprises a support and at least one hydrophilic colloidal layer coated thereon which contains silver halide grains having an average grain size of 0.05 t
4203767 Amplification process for light-sensitive color photographic material May 20, 1980
In a process for providing a color image which comprises imagewise exposing a multilayered light-sensitive photographic material comprising a support and a light-sensitive silver halide emulsion layer not having a coupler incorporated therein and thereafter developing said exposed photog
4200466 Light-sensitive silver halide photographic materials April 29, 1980
A light-sensitive silver halide photographic material comprising a m-aminophenol type coupler of the structure particularly defined therein is disclosed, which can successfully yield an excellent image stable against oxidation.
4192681 Process for forming an amplified dye image March 11, 1980
An improved process for forming an amplified dye image on an image-wise, exposed light-sensitive silver halide photographic material is described, which, after developing, is processed with an amplifying solution the improvement being in that (a) the coupler is in stoichiometric excess o
4175966 Light-sensitive black-white silver halide photographic material for forming a high-contrast silv November 27, 1979
A light-sensitive silver halide photographic material containing a substantially non-diffusible compound having oxidation power on a hydroquinone developing agent in a hydrophilic colloidal layer is processed, after light exposure, with a developer containing the said hydroquinone de
4137080 Process for dye image production on a light-sensitive silver halide photographic material January 30, 1979
There is disclosed a process for the production of a dye image on a silver halide photograhic material which comprises imagewise exposing the photographic material to light and then subjecting the photographic material to development in the presence of both a particular polyfunctiona
4113490 Method for processing light-sensitive silver halide photographic materials September 12, 1978
An exposed light-sensitive silver halide photographic material containing a coupler is processed with a developing bath and thereafter with an amplifying bath containing hydrogen peroxide, said process being characterized in that a compound acting on the silver halide at the unexpose










 
 
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