Konishiroku Photo Industry Co., Ltd.

Konica Corporation

Makoto Kajiwara

Masanobu Miyoshi

Kaoru Onodera

Mitsuhiro Okumura

Eiichi Sakamoto

Shigeo Tanaka

Syoji Matsuzaka

Kiyoshi Yamashita

Keiji Ohbayashi

Masaru Iwagaki

Akihiko Miyamoto

Shinichi Nakamura

Toyoki Nishijima

Hirokazu Sato

Takashi Kadowaki

Shinri Tanaka

Kazuhiro Murai

Shigeo Chino

Toshio Kimura

Kazuo Komorita

Hideaki Maekawa

Mitsuhiro Kubotera

Hideki Ono

Makoto Onodera

Keiji Obhayashi

A color photographic light-sensitive material for printing use comprising a reflection type support bearing thereon a blue-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a red-sensitive silver halide emulsion layer; wherein a silver halide emulsion contained in said green-sensitive silver halide emulsion layer is a monodispersed silver halide emulsion and a coupler combined with said monodispersed silver halide emulsion is a magneta coupler represented by the following formula I ##STR1## wherein Z represents a group of non-metal atoms necessary for forming a nitrogen-containing heterocyclic ring, and the ring formed by the Z is allowed to have substituents; X represents a substituent capable of splitting off through the reaction thereof on the oxidation products of a color developing agent; and R represents hydrogen or a substituent.

Color photographic light-sensitive material for printing use

A method of manufacturing a silver halide emulsion wherein spectral sensitizing dyes are added after the formation of silver halide grains, and chemically ripening is then carried out at a temperature higher than the addition temperature of the spectral sensitizing dyes at 25.degree. C. to 55.degree. C., is disclosed. A material produced by this method has a high linearity in gradation between the medium density part and the shoulder part, and having a high Dmax value.

Method for manufacturing a silver halide emulsion

A silver halide color photographic light sensitive material excellent in both sharpness and whiteness of background while being capable of satisfactorily displaying the yellow coupler characteristics including an excellent color reproduction is provided, wherein the silver halide color photographic light sensitive material contains a compound represented by the following Formula [I] in at least one of the photographic component layers thereof, a compound represented by the following Formula [II] in at least one of the silver halide emulsion layers thereof, and a compound represented by the following Formula [III] in at least one of the photographic component layers; and ##STR1##

Silver halide color photographic light sensitive material

Light-sensitive silver halide color photographic material, having at least one light-sensitive silver halide emulsion layer on a support, wherein at least one of said emulsion layer contains light-sensitive silver halide grains having outer surfaces principally comprised of {100} face, and a magenta dye image forming coupler represented by Formula (I) shown below: ##STR1## wherein Z represents a group of nonmetal atom necessary for formation of a nitrogen-containing hetero ring; said ring formed by Z may have a substituent; X represents a hydrogen atom or a substituent eliminable by the reaction with an oxidant in a color developing agent; and R represents a hydrogen atom or a substituent. which can porovide a light-sensitive silver halide color photographic material having high sensitivity, being low in fogs, and having improved color reproducibility.

Light-sensitive silver halide color photographic material

There is disclosed a method for forming a dye image which comprises a step of processing, with a color developing solution, a photo-sensitive silver halide photographic material comprising a support having thereon a silver halide emulsion layer. The method is characterized in that said silver halide emulsion layer comprises silver halide grains having a silver chloride content of not less than 90 mol. %; said photosensitive silver halide photographic material comprises a white pigment in an amount of not less than 3.5 g per m.sup.2 of said photographic material; and said photosensitive silver halide photographic material is, after being processed with the color developing solution, processed with a bleaching solution (BL-1) and subsequently with a fixing solution.

Method for forming a dye image

A light-sensitive silver halide photographic material comprising a support and provided thereon at least one silver halide emulsion layer containing a pyrazolo azole magenta dye-forming coupler represented by general formula M-I; ##STR1## (wherein Z represents a group of non-metallic atoms necessary to complete a nitrogen-containing heterocyclic ring which may have a substituent; X represents a hydrogen atom or a substituent capable of being split off upon reaction with an oxidation product of a color developing agent; and R represents a hydrogen atom or a substituent), to said silver halide emulsion layer an elementary sulfur having been added at an arbitrary timing before the formation of said silver halide emulsion layer on said support.

Silver halide light-sensitive photographic material

A silver halide photographic emulsion containing silver halide grains having a silver chloride content of not less than 90 mol % and a method for preparing thereof are disclosed, wherein the silver halide grains are obtained by forming said silver halide grains in the presence of a water-soluble iridium compound and a nitrogen-containing heterocyclic compound capable of forming sparingly-soluble silver salt; and by controlling the addition of said iridium compound, whereby the photographic emulsion is improved in the dependence of gradation on exposure intensity.

Silver halide photographic emulsion prepared with silver halide grains

A silver halide photographic light-sensitive material suitable for rapid processing is disclosed which is prevented in fogging and improved in raw stock storage stability. The photographic material comprises photographic component layers including a silver halide emulsion layer, and the silver halide emulsion layer contains silver halide grains having a silver chloride content of not less than 90 mol %, and at least one of the photographic component layers contain a nitrogen-containing heterocyclic compound capable of forming a compound with silver ion having a solubility product of not more than 1.times.10.sup.-10 and a sulfur- containing compound selected from the group consisting of organic compounds having a polysulfer linkage comprised of three or more sulfer atoms, and organic compounds having a heterocyclic ring having at least two thioether linkages or at least one disulfer linkage.

Light-sensitive silver halide photographic material

Disclosed is a method for processing a light-sensitive silver halide photographic material having at least one silver halide emulsion layer on a reflective support, characterized in that at least one layer of the silver halide emulsion layer contains a compound represented by the formula (I) shown below, and the light-sensitive silver halide photographic material with a total amount of a hydrophilic binder contained of 7.5 g/m.sup.2 or less is processed with a color developer with an amount of the color developer replenished of 25 to 100 ml per 1 m.sup.2 of the light-sensitive silver halide photographic material: ##STR1## wherein A, R.sub.1, R.sub.2, R.sub.3, R.sub.4, X.sub.1 and X.sub.2 are as described in the description.

Method for processing light-sensitive silver halide photographic material

A light-sensitive silver halide color photographic material, having at least one light-sensitive silver halide emulsion layer on a support, wherein at least one of said emulsion layer contains light-sensitive silver halide grains having outer surfaces principally comprised of {100} face, and a magenta dye image forming coupler represented by Formula (I) shown below: ##STR1## wherein Z represents a group of nonmetal atom necessary for formation of a nitrogen-containing hetero ring; said ring formed by Z may have a substituent; X represents a hydrogen atom or a substituent eliminable by the reaction with an oxidant in a color developing agent; and R represents a hydrogen atom or a substituent, which can provide a light-sensitive silver halide color photographic material having high sensitivity, being low in fogs, and having improved color reproducibility.

A silver halide photographic light-sensitive material comprising a support bearing thereon at least one silver halide emulsion layer containing a dye-forming coupler and a compound represented by Formula [I] as defined in the specification. The light-sensitive material further comprises at least one silver halide emulsion layer containing silver halide grains having a silver chloride content of not less than 90 mole percent and a compound represented by Formula [S] as defined in the specification. The presence of the compounds of Formula [I] and Formula [S] provide a material having a suitable contrast and having additional advantages such as excellent BF contamination resistance and pH variation resistance.

Silver halide photographic light-sensitive material suitable for rapid

A silver halide photographic light-sensitive material comprising a support having at least one hydrophilic colloidal layer having spectrally sensitized silver halide grains. There are particular sensitizers which are used and the colloidal layer contains gelatin which has a saturated solubility of not more than ten in an amount of at least 35% by weight.

Silver halide photographic light-sensitive material

A silver halide photographic light-sensitive material containing inorganic sulfur or elemental sulfur, and a processing method comprising a step for developing such photographic material with a color developer which contains an aromatic primary amine compound for not more than 60 seconds. Photographic image improved in contrast of the without degradation in sensitivity and fogging can be obtained by the photographic material and the processing method.

Silver halide photographic light-sensitive material and processing

A light-sensitive silver halide photographic material having a support with at least one silver halide emulsion layer containing a dye-forming coupler, where the light-sensitive silver halide photographic material is characterized in that at least one of the silver halide emulsion layers contains (i) the dye-forming coupler dispersed with the use of a high boiling organic solvent having a dielectric constant of 6.0 or less, (ii) silver halide grains containing a gold compound and having silver chloride content of 90 mole % or more, and (iii) a compound represented by General Formula (S) shown below. General Formula (S): ##STR1## where Q is a group of atoms necessary to complete a 5- or 6-membered heterocyclic ring or a 5- or 6-membered ring fused with a benzene ring and M is a hydrogen atom, an alkali metal or an ammonium group. The light-sensitive material can achieve excellent preservation of the dye image, is feasible for rapid processing, has superior BF contamination resistance and pH variation resistance.

Light-sensitive silver halide photographic material feasible for rapid

In a method of preparing a light-sensitive silver halide photographic emulsion, silver salt and halide are mixed in the presence of an iridium compound. The emulsion is then chemically ripened by an instable sulfur compound and a nitrogen-containing heterocyclic compound capable of forming a complex with silver.

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Odawara, Japan

Makoto Kajiwara