Fuji Photo Film Company, Limited

Koji Tamoto

Keiji Mihayashi

Mikio Ihama

Yuji Kume

Mitsunori Ono

Junichi Yamanouchi

Masayuki Iwasaki

Yoshisada Nakamura

Akira Umehara

Seiji Ichijima

Hidetoshi Kobayashi

Hisashi Okamura

Isamu Itoh

Tomokazu Yasuda

Toshihiro Nishikawa

Tadao Toyama

Shun-ichi Ishikawa

Kesanao Kobayashi

Hiroshi Takehara

Satoru Toda

Teruo Nagano

Mitsuru Koike

Hiroshi Ayato

Fumiaki Shinozaki

Minoru Sato

Kohzaburoh Yamada

Kei Sakanoue

Yoshihiro Jimbo

Tadashi Ogawa

Kiyoshi Nakazyo

Toshiyuki Watanabe

Shingo Sato

Yukio Karino

Yoshimasa Aotani

Jun Arakawa

Yoichi Suga

Satoshi Nagaoka

Hiroshi Fukuzawa

Yuichi Ohashi

Hiroshi Misu

Shigeru Shibayama

Seiichiro Kishida

Masao Arai

There is disclosed a silver halide photographic material containing a dispersion of a hydrophobic compound and a water-insoluble and organic solvent-soluble polymer as defined herein. The hydrophobic compound may be a dye which is photochemically inactive during storage but readily decolored and eluted in photographic processing.

Silver halide photographic material

A silver halide color photographic light-sensitive material includes red-, green- and blue-sensitive silver halide emulsion layers, and a non-light-sensitive layer, and contains a dye of the following formula (I). The emulsion layer or the non-light-sensitive layer contains a yellow coupler of the following formula (1) or (2), or an acylacetamide type yellow coupler having an acyl group of the following formula (Y): ##STR1## where X and Y represent an electron attractive group, or when coupled with each other, XY represents an acidic nucleus, Ar represents a phenyl group or a heterocyclic group, and L.sup.1, L.sup.2 and L.sup.3 represent a methine group, ##STR2## where X.sub.1 and X.sub.2 represent an alkyl group, an aryl group, or a heterocyclic group, X.sub.3 represents an organic group which forms a nitrogen-containing heterocyclic group together with &gt;N--, Y represents an aryl group or a heterocyclic group, and Z represents a split-off group, ##STR3## where D.sup.1 represents a monovalent group, and Q represents a non-metallic atomic group required to form, together with the C, a 3- to 5-membered hydrocarbon ring or a 3- to 5-membered heterocyclic ring.

Silver halide color photographic light-sensitive material

A silver halide photographic material having at least one hydrophilic colloid layer containing a dispersion obtained by emulsifying and dispersing a mixed solution containing at least one oil-soluble dye and at least one water-insoluble, organic solvent-soluble polymer.

Silver halide photographic material containing an oil-soluble dye

A silver halide photographic material has at least one hydrophilic colloid layer containing a dispersion obtained by emulsifying and dispersing a solution containing at least one oil-soluble dye and at least one water-insoluble, organic solvent-soluble polymer having at least one repeating unit represented by the following general formula (I): ##STR1## wherein R.sup.1 represents a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 4 carbon atoms, or a halogen atom; R.sup.2 and R.sup.3 may be the same or different and each represents a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group; L represents a bivalent bonding group; and n.sub.1 represents 0 or 1.

Disclosed is a silver halide photographic emulsion containing tabular silver bromide series grains having a mean aspect ratio of 2 or more, which is characterized by the grains having no projection on the grain surface and by the silver chloride content in the surface part of the grains being higher than that in the part of the grain which is underneath the grain surface. Also disclosed is a multi-layer photographic light-sensitive material having at least two silver halide emulsion layers on a support in which at least one of the silver halide emulsion layers contains the tabular silver bromide series grains as defined above. By the incorporation of the emulsion, the sensitivity, the storage stability and the manufacture stability properties of the photographic material are improved without deteriorating its graininess property.

Silver halide photographic emulsion and multilayer photographic

A silver halide photographic emulsion is described which has excellent color-sensitizing efficiency by sensitizing dyes, sharpness, covering power, and pressure resistant properties, wherein the grains are comprised of core/shell type grains having contained therein a partially halogen-converted silver salt phase, the silver salt comprising silver halochloride, silver thiocyanate or silver citrate.

Silver halide photographic emulsion

A silver halide photographic emulsion comprising a hydrophilic colloid having dispersed therein tabular silver halide grains having an aspect ratio of at least 2, the grains comprising a matrix comprising at least 50 mol % silver bromide ions based on silver ions, and a high silver chloride layer on the matrix, the high silver chloride layer comprising at least 50 mol % chloride ions based on silver ions and forming a substantially uniform plane on the matrix, wherein at least 50 mol % of the high silver chloride layer is present on two basal plane surfaces of the matrix. The emulsion has improved pressure properties which are suited for rapid processing, and minimized grain aggregation and excellent suitability for preparation.

A silver halide color photographic material comprising a support having thereon at least one silver halide emulsion layer, wherein a silver halide emulsion contained in at least one of the silver halide emulsion layers is a silver halide emulsion in which 30% by number of the total number of whole silver halide grains have a diameter of not more than 0.3 .mu.m, as a diameter of equivalent sphere, and the silver halide color photographic material contains a compound capable of releasing upon a reaction with an oxidation product of a developing agent a compound which is capable of releasing development inhibitor upon a reaction with another molecular of an oxidation product of a developing agent. The silver halide color photographic material has excellent color reproducibility and sharpness as well as a broad exposure latitude.

Silver halide color photographic material

A silver halide color photographic light-sensitive material comprising a support having provided thereon one or more blue-sensitive layers each containing a yellow coupler, one or more green-sensitive layer each containing a magenta coupler, one or more red-sensitive layers each containing a cyan coupler, and one or more protective layers provided on the side of the support and further from the support than the color-sensitive layer which is furthest away from the support, the thickness of the total photographic layers provided on the support from the color-sensitive layer located closest to the support to the protective layers, inclusive, being 18 .mu.m or less, wherein at least one of said yellow coupler is a compound represented by formula (I) ##STR1## and wherein said color photographic light-sensitive material further contains a compound represented by formula (II) ##STR2## Preferably at least one of the yellow, magenta and cyan couplers is incorporated by using a method of dispersion in which a solvent having a boiling point of 160.degree. C. or more is used as the coupler dispersion medium and said coupler is dispersed in an amount such that the weight ratio of solvent to coupler is not more than 0.2, or incorporated by dispersing in a macromolecular polymer as the coupler dispersion medium.

Silver halide photographic light-sensitive materials having specified

A silver halide color photographic material comprising a support having thereon at least one photosensitive silver halide emulsion layer, wherein a 5-pyrazolone type 2-equivalent coupler is present in the photosensitive silver halide emulsion layer or a layer adjacent thereto and a hardening agent which acts by activating a carboxy group is present in a photosensitive or non-photosensitive photographic layer of the silver halide color photographic material.

A silver halide color photographic light-sensitive material is disclosed, comprising (1) a coupler having a dye moiety, the maximum absorption wavelength of which is shifted to the shorter wavelength by a bond cleaving, directly or through a timing group, due to a coupling reaction with an oxidized product of an aromatic primary amine-based developing agent, and, as a result of the reaction, forming a compound having a dye portion which has the original maximum absorption wavelength before shifting; and (2) a compound releasing a development inhibitor directly or through a timing group upon reacting with the oxidized aromatic primary amine-based developing agent.

Silver halide color photographic light-sensitive material containing a

A conventional silver halide color photographic material is described, containing a coupler having a dye moiety having the maximum absorption wave length shifted to a short wave length by a linkage which is cleaved directly or through a timing group by a coupling reaction with the oxidation product of a developing agent and forming a compound or the precursor thereof (compound A) having a dye moiety having the maximum absorption wave length before shifting as the result of the above-described reaction and a compound capable of fixing the hue of the compound A at a long wave length and/or capable of immobilizing the compound A in the photographic layer.

A silver halide color photographic material comprising a support having thereon at least a silver halide emulsion layer containing a compound represented by formula (I) ##STR1## wherein R.sup.1 and R.sup.2 each represents a hydrogen atom, an alkyl group, an alkoxy group, a halogen atom, an alkoxycarbonyl group, a carbamoyl group, a carbonamido group, a sulfonamido group, or a sulfamoyl group; R.sup.3 represents a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, or a carbonamido group; X represents a halogen atom or an alkoxy group; R.sup.4 represents a carbamoyl group, an alkylsulfonyl group, an arylsulfonyl group, or a sulfamoyl group; R.sup.5 represents a hydrogen atom, a halogen atom, a halogen-substituted alkyl group, a nitro group, a cyano group, a carbamoyl group, a sulfamoyl group, an alkylsulfonyl group, an acyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, an alkoxy group, an aryloxy group, a carbonamido group, or a sulfonamido group; provided that at least one of said R.sup.1, R.sup.2, and R.sup.5 is a non-diffusible group; and m represents an integer of from 0 to 4.

A silver halide color photographic material comprising a support having provided thereon at least one silver halide emulsion layer, wherein the photographic material contains a compound having a dye portion in which the maximum absorption wavelength is shifted by a bond that is cleaved upon reaction with an oxidation product of a developing agent and is capable of forming a diffusion resistant compound having a dye portion possessing the maximum absorption wavelength which is not shifted as a result of the reaction with an oxidation product of a developing agent. By the use of the compound which permits a large degree of freedom with respect to selection of the dye for forming a color image according to the present invention, the color photographic material has an excellent image quality, and a good fastness of image or a high sensitivity.

Growing community of inventors

Kanagawa, Japan

Koji Tamoto