Konishiroku Photo Industry Co., Ltd.

Konica Corporation

Eiichi Sakamoto

Teiji Habu

Noboru Fujimori

Kaoru Onodera

Makoto Kajiwara

Mikio Kawasaki

Masanobu Miyoshi

Tomio Nakajima

Hiroshi Yamada

Masao Ishihara

Kiyomitsu Mine

Yutaka Kaneko

Tomomi Yoshizawa

Keiji Ogi

Sadatugu Terada

Hidehiko Ishikawa

Kouji Ono

Kaiichiro Sakazume

Shinichi Nakamura

Takashi Sasaki

Shigeo Tanaka

Shigeto Hirabayashi

Hirokazu Sato

Hidetaka Ninomiya

Mitsuhiro Okumura

Hiroshi Shimazaki

Kenichiro Okaniwa

Satoshi Nakagawa

Takashi Uchida

Hideaki Haraga

Yasuo Tsuda

Atsuo Ezaki

Masaru Kanbe

Hideo Akamatsu

Minoru Ishikawa

Naoto Abe

Takashi Kamio

Shizuo Saito

Hiroshi Inoie

Kenichi Kitahara

Masao Iwamuro

Yoshio Nishina

Atsushi Kamitakahara

Mamoru Komiya

Akio Oshima

Kouzi Ono

Hiroo Toya

Masashi Nakano

Kazuo Nakazato

Noboru Ito

Mariko Natori

Kakujulo Fukuoji

Keiji Obhayashi

Masaaki Kaneshige

Nariko Isozaki

Shigeji Baba

Bunji Okubo

Disclosed is a direct positive light-sensitive photographic material having at least one silver halide emulsion layer containing inner latent image type silver halide grains not previously fogged, which gives a direct positive image after image exposure by surface development after application of fogging treatment or while applying fogging treatment, wherein the inner latent image type silver halide grains comprise substantially silver chloride, and the silver halide emulsion layer or a hydrophilic colloid layer adjacent thereto contains at least one active halide type or active vinyl type gelatin hardener, and at least one compound represented by the formula (I) or (II) described in the specification. This direct positive light-sensitive silver halide photographic material is particularly excellent in stability with lapse of time.

Direct positive light-sensitive silver halide photographic material

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 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

A color photographic material is disclosed, which is improved in the preservability of the dye image and in the resistance to the pH fluctuation or the contamination with bleach-fixer of the color developer. The photographic light-sensitive material comprising a support having thereon photographic component layers comprising a blue-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a red-sensitive silver halide emulsion layer containing silver halide grains each comprising not less than 90 mol % of silver chloride, a compound represented by the following formula [S] and a cyan coupler represented by the following formula [I]. ##STR1##

Silver halide photographic light-sensitive material excellent in

A silver halide photographic material is disclosed which comprises a support coated with photographic layers including one or more silver halide emulsion layers, at least one of said silver halide emulsion layers containing silver halide grains with a silver iodide content of 3.0-15 mol %, and at least one of said photographic layers containing a compound represented by the following general formula (I): ##STR1## where Y is an aromatic group or a 5- or 6-membered heterocyclic group.

Silver halide photographic material that is resistant to fogging during

A light-sensitive silver halide direct-positive photographic material which comprises a support and, provided thereon a light-sensitive direct-positive silver halide emulsion layer containing silver halide grains having an internal latent image and a core-shell structure comprising a core and at least one shell stratum either partly or entirely covering said core, the outermost stratum of said shell having been formed in the presence of a nitrogen-containing heterocyclic compound having a mercapto group therein.

Direct positive silver halide light-sensitive photographic material

A silver halide photographic material containing a support and, provided thereon, at least one silver halide emulsion layer, this silver halide emulsion layer containing silver halide grains containing 90 mol % or more of silver chloride, a dye-forming coupler, and a compound represented by general formula [S]; ##STR1## wherein 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 silver halide layer having been hardened by a hardener represented by formula [HDA] or [HDB]; ##STR2## wherein Rd.sub.1 is selected from the group consisting of a chlorine atom, a hydroxyl group, an alkyl group, an alkoxy group, an alkylthio group, an --OM group, wherein M is an mono-valent metal atom, a --NR'R' group, wherein R' and R' are independently selected from the group consisting of a hydrogen atom, an alkyl group and an aryl group and a --NHCOR'' group, in which R'' is selected from the group consisting of a hydrogen atom, an alkyl group and an aryl group; Rd.sub.2 is selected from the group consisting of a hydroxyl group, an alkyl group, an alkoxy group, an alkylthio group, an --OM group, wherein M is an mono-valent metal atom, a --NR'R' group, wherein R' and R' are independently selected from the group consisting of a hydrogen atom, an alkyl group and an aryl group and a --NHCOR'' group, in which R'' is selected from the group consisting of a hydrogen atom, an alkyl group and an aryl group; ##STR3## wherein Rd.sub.3 and Rd.sub.4 are independently selected from the group consisting of a chlorine atom, a hydroxyl group, an alkyl group, an alkoxy group and an --OM group, in which is a mono-valent metal atom; Q and Q' is a divalent atom or group selected from --O--, --S-- and --NH--; L is an alkylene group or an arylene group; and p and q are independently integers of 0 or 1. The above-described silver halide photographic material is processed with a color developing solution containing a sulfite ion in a quantity of 2.times.10.sup.-4 to 1.times.10.sup.-2 moles per liter, this developing solution being substantially free of bromide ion. The above-described material and process for developing the same, being better suited for use in rapid developing processes.

Method of forming dye image having superior rapid processing performance

A silver halide photographic light-sensitive material which is improved on fog without decreasing photosensitivity. The photographic material comprises a support and a photographic structural layer provided thereon containing at least one silver halide emulsion layer and at least one non-light-sensitive layer. A nitrogen-containing heterocyclic mercapto compound is contained at least two layers of the photographic structure layer, and at least one of these mercapto compound-containing layer is a non-light-sensitive layer.

Silver halide photographic light-sensitive material

A method for processing silver halide photographic materials is disclosed. In this method a silver halide photographic material is developed in the presence of at least one compound represented by the following Formula [Ia] or [Ib]: ##STR1## wherein Ar is a benzene or naphthalene ring, F is a fluorine atom, Y and Y' are substituents, X is a bivalent atom or a bivalent linkage group. The compound may be contained in a processing solution or in the silver halide photographic light-sensitive material to be processed. A fog of the silver halide photographic material, especially a fog due to a storage of the materials at a high temperature can be considerably decreased.

Method for processing silver halide photographic light-sensitive

There is disclosed a light-sensitive silver halide photographic material, having two or more light-sensitive silver halide emulsion layers different in color sensitivities on a support, at least two of the light-sensitive silver halide emulsion layers different in color sensitivities containing a DIR compound capable of releasing a developing inhibitor or developing inhibitor precursor through the reaction with the oxidized product of a developing agent, the developing inhibitor or developing inhibitor precursor released from the DIR compound being diffusive, wherein the following conditions A:

Developing inhibitor arrangment in light-sensitive silver halide color

Silver halide photographic material for radiography comprising a transparent support having a hydrophilic colloid layer coated on each side thereof said layer comprising (a) photosensitive silver halide grains, (b) silver halide grains having surfaces covered with a solubility reducing agent and which, in the absence of said solubility reducing agent, are more soluble in a material capable of dissolving silver halide than said (a), said (b) having a sensitivity to light generally less than 1/10 that of said (a), and (c) physical development nuclei, wherein the molar ratio of (a) to (b), based on the silver content of each, is between 1:0.1 to 1:0.8 on each side of said support and the total silver content of (a) and (b) is from 1 to 8 g/m.sup.2.

Silver halide photographic material for radiography

A radiographic image forming process comprising imagewise exposing a negative type silver halide light-sensitive photographic material in combination with a fluorescent intensifying screen to radiation and then treating said material with a processing solution, said material comprising a support and constituent layers coated on both sides of said support, said layers containing

Radiographic image forming process

Photographic materials and photographic processes employing light sensitive silver halide particles, silver halide particles which are substantially non-light sensitive having been modified with a silver halide solubility reducing agent and internally fogged silver halide particles which are substantially non-light sensitive provide negative silver images of high contrast and high maximum density.

Method for the formation of photographic images

A method for forming a negative image comprising imagewise exposing a photographic material to provide exposed areas and unexposed areas, said material comprising, on a support, (1) an emulsion layer containing a light-sensitive silver halide, (2) unsensitized silver halide metallic salt grains which are more soluble in a developer than the light sensitive silver halide, and (3) nuclei for physical development, processing said material in the presence of a reducing agent and a solvent for said grains with said developer containing a substance which renders said grains less soluble by adsorbing thereto, said developer rendering said grains in said exposed areas and not in said unexposed areas soluble in said solvent, whereby metal ions are released and deposited on said nuclei.

Method for forming a negative image

A photographic material having a light-sensitive silver halide emulsion layer coated on a support. The material contains a compound represented by the following general formula [Ia] or [Ib] ##STR1## wherein R.sub.1 and R.sub.3 individually represent an alkyl, alkenyl or acyl group; R.sub.4 represents a halogen atom, an alkyl, alkenyl, cycloalkyl or cyano group, or --SO.sub.2 R.sub.5 or --COR.sub.5 group; and R.sub.5 represents a hydrogen atom, a hydroxy, alkyl, alkoxy, cycloalkoxy, aryloxy or amino group.

Light-sensitive silver halide photographic material

Growing community of inventors

Hino, Japan

Eiichi Sakamoto