Konishiroku Photo Industry Co., Ltd.

Konica Corporation

Mikio Kawasaki

Yutaka Kaneko

Toyoaki Masukawa

Mitsuto Fujiwhara

Syunji Matsuo

Eiichi Sakamoto

Kiyoshi Sato

Kouji Ono

Shinichi Ohtani

Noboru Hatakeyama

Masatoshi Iwata

Kouzi Ono

Tomomi Yoshizawa

Noboru Fujimori

Takashi Uchida

Yasunori Wada

Kazuo Takahashi

Masaaki Taguchi

Hiroaki Shiozawa

Noboru Ito

Mariko Natori

Kakujulo Fukuoji

Kakujulo Fukuouji

Kiyoshi Harada

Masatosi Iwada

An image forming method and its apparatus are disclosed. The method comprises exposing a light-sensitive silver halide photographic material having a support and hydrophilic colloid layers provided on both sides of the support and developing the exposed material with a developing solution without immersing it in the developing solution. The apparatus comprises (a) a pair of rollers for transporting the material in a downward direction and (b) a pair of nozzles for feeding the developing solution to both sides of the material, the nozzles being provided above the rollers.

Image forming method and apparatus

A method of developing a silver halide photographic material is disclosed. The method comprises a step of supplying a developer to a surface of an exposed silver halide photographic material, which is transferred by at least one pair of rollers, intermittently at least twice wherein an interval time of each supplying is not more than 10 seconds and the amount of developer retained in the light-sensitive material ranges from 50 to 250 ml/m.sup.2 . The method provides a compact developing system, which is free from uneven development with good grainess of the image.

Method of development comprising intermittently spraying a photographic

An X-ray radiography system comprising divided fan beam scanning device, feed-back the beam regulator and a silver halide photosensitive material having a covering power not less than 45 which is capable to diagnose wide range of photodensity area at one time exposure for minimizing the radiation dose is disclosed.

X-ray radiographic system

The invention provides an apparatus for processing a sheet-shaped silver halide photographic light sensitive material having a hydrophilic colloidal layer on a substrate without dipping it in a processing solution in a tank. In the apparatus, there are provided a conveying device having a pair of conveying belts disposed to face each other with a gap, wherein the gap is made so that the pair of conveying belts hold the developing solution therebetween. Accordingly, the conveying device conveys the sheet-shaped material with the developing solution between the pair of conveying belts.

Apparatus for processing light-sensitive materials

An exposure device for printing an image on a photographic material having a tabular-shaped light emitting means as a light source is disclosed. The exposure device has neither exposure unevenness nor can the light source be suddenly cut off in use and is suitable for printing an identification mark on medical films.

Exposure device

Disclosed is a light-sensitive silver halide photographic material comprising at least one silver halide emulsion layer on at least one side of a support and at least auxiliary layer adjacent to the silver halide emulsion layer, the silver halide emulsion layer containing a surface latent type silver halide emulsion and a silver halide emulsion having fog internally of the grains, and the auxiliary layer containing a compound represented by the formula (I) shown below:

Light-sensitive silver halide photographic material

There is disclosed a light-sensitive silver halide photographic material having at least one silver halide emulsion layer on a support, which comprises the light-sensitive photographic material contains light-sensitive silver halide grains, metal salt grains having internal fog and a polyhydric alcohol having at least two hydroxyl groups having a melting point of 40.degree. C. or higher.

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

High-contrast light-sensitive silver halide photographic material which comprises a support, a silver halide emulsion layer containing silver halide and another hydrophilic colloidal layer coated on the support, at least one of said silver halide emulsion layer and another hydrophilic colloidal layer containing a substantially non-diffusible compound having oxidizing power on a hydroquinone developing agent, and the thickness, in an aqueous solution having the composition described as in the specification kept at 23.degree. C., of said at least one layer being from 1.2-4.5 times that of said layer dried in an atmosphere at 23.degree. C. at a relative humidity of 55%.

High-contrast light-sensitive silver halide photographic material

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

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 1.5.mu. and a tetrazolium compound and a method of processing thereof.

Light-sensitive silver halide photographic material containing

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 to 1.5.mu., a tetrazolium compound and a sensitizing dye.

Light-sensitive silver halide photographic material and method of

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 photographic material with a coupler-containing color developer, the speed and color density of the image are improved by incorporating into the light-sensitive silver halide emulsion layer or the layer contiguous therewith oil particles of a high boiling solvent such as phthalate, phosphate, amide and alcohol type solvents.

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Hino, Japan

Mikio Kawasaki