Fuji Photo Film Company, Limited

Sadanobu Shuto

Hideo Ikeda

Takefumi Hara

Naoyasu Deguchi

Yasuhiro Shimada

Makoto Suzuki

Mitsuru Yamamoto

Satoshi Nagaoka

Katsuro Nagaoka

Kazuyoshi Yamakawa

Yasuhiro Hayashi

Kazunori Hasebe

Munehisa Fujita

Yoshihiko Shibahara

Hatsumi Tanemura

Makoto Yamada

Takatoshi Ishikawa

Shigeo Hirano

Takashi Ozawa

Noriyuki Inoue

Tadao Shishido

Mikio Ihama

Shinji Ueda

Toshinao Ukai

Akio Mitsui

Junya Nakajima

Tadaaki Tani

Shunichi Aida

Kensuke Goda

Masayuki Kuramitsu

Shigeru Kuwashima

Sadao Kamei

Yutaka Maeno

Akihiro Kakinuma

Silver halide color reversal photographic light-sensitive material

The present invention relates to a color reversal photographic light-sensitive material, and particularly to a color reversal photographic light-sensitive material improved in skin color (flesh color) reproduction. More specifically, it relates to a color reversal photographic light-sensitive material that is excellent in tone reproduction of gray and skin colors, and that also exhibits a preferable chroma (colorfulness or saturation) with respect to skin colors of different tints.

There is disclosed a silver halide color photographic material having a red-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer, a blue-sensitive silver halide emulsion layer, which comprises a cyan dye-forming coupler represented by formula (I) and (a) a monodisperse silver halide emulsion, (b) non-photosensitive silver halide emulsion wherein the inside or the surface of grains is fogged, (c) a colloidal silver, (d) negative-type interval latent image-type silver halide grains chemically sensitized to a defined depth from the surface, (e) a sensitizing dye containing a sulfonamide group, (f) three separated layers of high, medium, and low sensitivities, (g) two separated layers each having different content of iodine, (h) grains each having a defined spectral sensitivity distribution and a DIR-hydroquinone, or (i) a DIR-hydroquinone: formula (I) ##STR1## wherein R.sup.1 represents a hydrogen atom or a substituent, R.sup.2 represents a substituent, X represents a hydrogen atom or a group capable of being released upon a coupling reaction of the coupler represented by formula (I) with the oxidized product of a color-developing agent, and Z.sup.1 represents a group of nonmetallic atoms required for forming a nitrogen-containing 6-membered heterocyclic ring, which contains at least one group capable of being dissociated.

Silver halide color photographic material

A light-sensitive silver halide emulsion contains tabular silver halide grains with an equivalent-circle diameter/thickness ratio of 8 to 100. In this light-sensitive silver halide emulsion, a variation coefficient of a grain size distribution of the tabular silver halide grains is 1% to 20%, and 50% or more (number) of all of the tabular silver halide grains are grains whose ratio, b/a, of a longest distance, a, between two or more twin planes of the tabular silver halide grain to a grain thickness, b, is 1.5.ltoreq.b/a&lt;5.

Light-sensitive silver halide emulsion and photographic light-sensitive

There is disclosed a silver halide color photographic material having a red-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer, a blue-sensitive silver halide emulsion layer, which comprises a cyan dye-forming coupler represented by formula (Ia) and (a) a sensitizing dye containing a sulfonamide group, (b) negative-type internal latent image-type silver halide grains chemically sensitized to a defined depth from the surface, (c) grains each having a defined spectral sensitivity distribution and a DIR-hydroquinone, (d) a monodisperse silver halide emulsion, (e) non-photosensitive silver halide emulsion wherein the inside or the surface of grains is fogged, (f) a colloidal silver, or (g) a DIR-hydroquinone: formula (Ia) ##STR1## wherein the substituents are as defined herein the specification.

A silver halide photographic emulsion contains tabular silver halide grains having an aspect ratio of 2 or more in an amount of 70% or more of a total projected area of all grains. A variation coefficient of the grain size distribution of all silver halide grains is 20% or less, a signal having at least two peaks is present in a diffraction angle range of less than 1.5 degree at a maximum peak height.times.0.13 of a (420) X-ray diffraction signal obtained using the K.sub..alpha. line of Cu, and a peak interval thereof is 0.1 degree or more in terms of the diffraction angle.

Silver halide photographic emulsion and silver halide photographic

There is disclosed a silver halide color photographic material having a red-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer, a blue-sensitive silver halide emulsion layer, which comprises a cyan dye-forming coupler represented by formula (Ia) and (a) a sensitizing dye containing a sulfonamide group, (b) negative-type internal latent image-type silver halide grains chemically sensitized to a defined depth from the surface, (c) grains each having a defined spectral sensitivity distribution and a DIR-hydroquinone, (d) a monodisperse silver halide emulsion, (e) non-photosensitive silver halide emulsion wherein the inside or the surface of grains is fogged, (f) a colloidal silver, or (g) a DIR-hydroquinone: ##STR1## wherein Za represents --NH-- or --CH(R.sub.3)--, Zb and Zc each represent --C(R.sub.4).dbd. or --N.dbd., R.sub.1, R.sub.2, and R.sub.3 each represent an electron-attracting group wherein the Hammett substituent constant .sigma..sub.p value is 0.20 or more, provided that the sum of the .sigma..sub.p value of R.sub.1 and the .sigma..sub.p value of R.sub.2 is 0.65 or more, R.sub.4 represents a hydrogen atom or a substituent, if there are two groups R.sub.4 in the formula, they may be the same or different, and X represents a hydrogen atom or a group capable of being released upon a coupling reaction with the oxidized product of an aromatic primary amine color-developing agent, provided that R.sub.1, R.sub.2, R.sub.3, R.sub.4, or X may be a divalent group to form a homopolymer or a copolymer by bonding with a dimer or higher polymer or polymer chain.

A silver halide color photographic material comprises a support, a blue sensitive layer, a green sensitive layer and a red sensitive layer. The total silver content of the photographic material is not more than 1.0 g/m.sup.2. The photographic material further contains a compound represented by the formula (1a) or (1b): ##STR1## in which R.sup.12 is an aliphatic group, an aromatic group or a heterocyclic group; M is --CO--, --SO.sub.2 --, --N(R.sup.15)CO--, --OCO-- or --N(R.sup.15)SO.sub.2 --; each of R.sup.14, R.sup.15 and R.sup.24 independently is hydrogen, an alkyl group or an aryl group; L is a divalent linking group necessary for forming a 5, 6 or 7-membered ring; each of R.sup.11, R.sup.13 and R.sup.21 independently is hydrogen or a substituent group of the hydroquinone nucleus; Time is a group which is released from the oxidation product of the hydroquinone nucleus to further release X; X is a development inhibitor; and t is 0 or 1. M preferably is --SO.sub.2 --, --N(R.sup.15)CO--, --OCO-- or --N(R.sup.15)SO.sub.2 --.

Silver halide color photographic material comprising at least one

A silver halide color photographic material comprises a support, a blue sensitive layer, a green sensitive layer and a red sensitive layer and at least one non-light-sensitive layer. The non-light-sensitive layer is an intermediate layer arranged between the silver halide emulsion layers. According to the present invention, the non-light-sensitive intermediate layer contains a compound represented by the formula (1a) or (1b): ##STR1## in which R.sup.12 is an aliphatic group, an aromatic group or a heterocyclic group; M is --CO--, --SO.sub.2 --, --N(R.sup.15)CO--, --OCO-- or --N(R.sup.15)SO.sub.2 --; each of R.sup.14, R.sup.15 and R.sup.24 independently is hydrogen, an alkyl group or an aryl group; L is a divalent linking group necessary for forming a 5, 6 or 7-membered ring; each of R.sup.11, R.sup.13 and R.sup.21 independently is hydrogen or a substituent group of the hydroquinone nucleus; Time is a group which is released from the oxidation product of the hydroquinone nucleus to further release X; X is a development inhibitor; and t is 0 or 1. It is preferred that M is--SO.sub.2 --, --N(R.sup.15)CO--, --OCO-- or --N(R.sup.15)SO.sub.2 --.

A method for color reversal processing of an imagewise exposed silver halide color photographic material comprising first developing in a black-and-white developing bath, next color developing in a color developing bath, and then desilvering in a bath having a bleaching ability. The black-and-white developing bath has a bromide concentration in the range of 0.025 to 0.1 mol/l and is used for the black-and-white development. Furthermore, in a preferred embodiment, the photographic material comprises at least one silver halide emulsion layer containing a silver halide emulsion comprising silver halide grains having an average grain size of 0.3 .mu.m or less. In accordance with the invention, the maximum densities of the developed color images are increased without lowering of the sensitivity and contrast.

Method of processing silver halide color photographic materials

A process for preparing a direct positive photosensitive material comprising providing on a support at least one silver halide light-sensitive emulsion layer containing the combination of (a) non-prefogged internal latent image silver halide grains; (b) a binder; (c) at least one compound represented by formulae (I), (II), or (III); and at least one compound represented by formula (IV):

Process for preparing a direct positive photographic material

A novel direct positive photosensitive material is provided comprising a support having therein at least one photographic emulsion layer containing internal latent image type silver halide grains not having been previously fogged, wherein the photographic emulsion layer comprises:

Direct positive photosensitive material

A direct positive photosensitive material composed of a support having thereon at least one photosensitive emulsion layer comprising non-prefogged internal latent image silver halide grains and at least one compound represented by formulae (I), (II), (III) or (IV): ##STR1## wherein M.sub.1 represents hydrogen, a cation or a protective group capable of being cleaved by an alkali; and Z represents an atomic group necessary for forming a 5-membered or 6-membered substituted or unsubstituted ring selected from a heterocyclic ring and a condensed heterocyclic ring; ##STR2## wherein Z.sub.1 represents an alkyl group containing from 1 to 18 carbon atoms, an aryl group containing from 6 to 18 carbon atoms or a heterocyclic group; Y.sub.1 and Y.sub.2, which may be the same or different, each represents an atomic group necessary for forming an aromatic ring containing from 6 to 18 carbon atoms or a heterocyclic ring; M represents a metal atom or an organic cation; and n is an integer of 2 to 10.

Process for preparing an internal latent image silver halide emulsion

A silver halide color photographic material comprising a support having thereon at least one silver halide photographic emulsion layer and at least one layer containing colloidal silver, wherein said colloidal silver-containing layer comprises at least one compound selected from compounds of general formula (I) and (II) below, and at least one photosensitive or non-photosensitive layer selected from a silver halide photosensitive layer positioned farthest from said support and any layers positioned between said farthest photosensitive layer and said support comprises a silver halide emulsion containing internally-fogged or surface-fogged silver halide grains: ##STR1## wherein the substituent groups on general formula (I) and (II) are as defined in the specification.

Growing community of inventors

Minami-ashigara, Japan

Sadanobu Shuto