Konica Corporation

Takuji Hasegawa

Kazuyoshi Goan

Takeshi Habu

Hiromu Ohara

Toshihisa Takeyama

Haruhiko Sakuma

Yasunori Wada

Yuji Hosoi

Yorihiro Yamaya

Tsuyoshi Mitsuhashi

Shu Nishiwaki

Toshikazu Umeda

Syoji Nishio

Akiko Suzuki

Kenichi Inoue

Kazuhiro Iwasaki

Photothermographic material

Image forming method, image forming apparatus and image recording material

A radiographic image forming method is disclosed. The method comprises the steps of (1) interposing a silver halide photographic material which comprises a support having a silver halide emulsion layer on each of both sides the support and has a cross-over value of not more than 15%, between two sheets of an intensifying screen comprising a support and a fluorescent layer composed of plural fluorescent sub-layers and a protect layer provided on the support in this order from the support, in which the fluorescent sub-layers each comprises a binder and particles of a fluorescent substance having the average particle size R and the standard deviation .sigma. of the particle size distribution satisfying a relation of 0 &lt;.sigma./R.ltoreq.0.5 and the values of R of the particles contained in each of the fluorescent sub-layers are different from each other, (2) imagewise exposing to radiation the intensifying screens and the silver halide photographic light-sensitive material interposed between the intensifying screens, and (3) processing the imagewise exposed light-sensitive material with processing solutions including a developing solution to forming a radiographic image.

Radiographic image forming method

A solid developing composition for processing a silver halide photographic light sensitive material is disclosed which contains a compound represented by the following formula (1) and a compound represented by the following formula (2): formula (1) ##STR1## formula (2) ##STR2##

Solid developing composition for processing silver halide photographic

A composite for radiography is disclosed which essentially consists of a) a silver halide photographic light-sensitive material comprising a transparent support and at least one light-sensitive silver halide emulsion layer provided on each side of the support, b) fluorescent screen A having a 80 kVp X-ray energy absorption of 40% or more and c) fluorescent screen B having a 80 kVp X-ray energy absorption of 50% or more and the absorption more than fluorescent screen A, the material being sandwiched between the screens A and B in such a manner that emulsion layer A is in close contact with screen A and emulsion layer B is in close contact with screen B, wherein the slope of the straight portion in the characteristic curve of emulsion layer A is less than that of emulsion layer B and emulsion layers A and B of the silver halide photographic light-sensitive material have sensitivity on an exposed side that an exposure necessary to give a density of the minimum density +0.5 is 0.027 to 0.040 lux.multidot.second.

Composite of silver halide photographic light-sensitive material and

An apparatus for processing a silver halide photographic light-sensitive material with a processing solution is disclosed, comprising a processing tank containing the processing solution and replenishing means for replenishing the processing solution during the course of processing, wherein the replenishing means comprises two replenishing tanks each connected to the processing tank; a solid processing composition and water are supplied to each of the replenishing tanks to prepare a replenishing solution therein; while replenishment is being made from one of the replenishing tanks, the solid processing composition is supplied, together with water, to another replenishing tank to prepared another replenishing solution therein, and the preparation of the replenishing solution and replenishment thereof are repeated alternately in each of the replenishing tanks to perform continuous replenishment.

Apparatus for processing silver halide photographic light-sensitive

A silver halide photographic light-sensitive material comprising a support having thereon a silver halide emulsion layer containing a silver halide emulsion comprising silver halide grains, which is prepared by a process comprising

Silver halide photographic light-sensitive material

A silver halide photographic light-sensitive material comprising a support bearing on both sides thereof a silver halide emulsion layer containing a silver halide emulsion comprising monodispersed and spectrally-sensitized silver halide tabular grains having an average aspect ratio of grain diameter to grain thickness of from not less than 2 to less than 8 and accounting for at least 70% of the total projected area of the grains contained in the silver halide emulsion and a method of preparing the silver halide emulsion are disclosed, wherein the silver halide emulsion is chemically sensitized in the presence of iodide-containing silver halide fine grains, thus chemically-sensitized emulsion having a value of 100 mV or less with respect to a silver electrode potential at 50.degree. C.

Silver halide photographic light-sensitive material and a method for

A silver halide light-sensitive photographic material having a support and provided thereon, hydrophlic colloidal layers including at least one silver halide light-sensitive emulsion layer is disclosed. The silver halide emulsion layer comprises a silver halide emulsion (I) prepared by adding a high-molecular flocculant under at least one of Conditions (1) through (3) to a silver halaide emulsion (II) prepared by a water-soluble silver salt solution and a water-soluble halide solution to a protevtive colloid solution so as to flocculate and settle a silver halide grain together with a protective colloid for desalting of dissolved substances, and by dispersing again the desalted silver halide emulsion in a protective colloid solution;

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Hino, Japan

Takuji Hasegawa