Konishiroku Photo Industry Co., Ltd.

Yuji Hotta

Takao Abe

Kunihiro Koshizuka

Masaki Nakamura

Shigehiro Kitamura

Fumio Ishii

Syoji Matsuzaka

Toshifumi Iijima

Noritaka Nakayama

Hiroshi Kashiwagi

Masanobu Miyoshi

Katsunori Katoh

Satoshi Kawakatsu

Kenji Kumashiro

Katsumi Matsuura

Takeo Koitabashi

Ryosuke Sato

Kaoru Shinozaki

Masatoshi Iwata

Koichi Hatta

Hiroko Ohya

A silver halide color photographic material having at least one silver halide emulsion layer on a support is disclosed. Said silver halide emulsion layer contains at least one of the 1H-pyrazolo [3,2-c]-S-triazole derived magenta couplers that have a substituent of the following formula at 3-position:

Silver halide color photographic material containing a 1h-pyrazole

A silver halide photographic emulsion is disclosed. The emulsion has silver halide grains that consist essentially of silver chlorobromide and which have been sulfur-sensitized in the presence of a silver halide solvent.

Silver halide photographic emulsion

There is disclosed a heat-sensitive transfer recording medium comprising a support and, provided thereon, a colorant-containing layer for heat-sensitive transfer, wherein said colorant-containing layer contains a silicone wax as a heat-fusible material which is solid or semi-solid at ambient temperature or room temperature. The recording medium according to the present invention is capable of printing at low energy and with high transfer sensitivity.

Heat-sensitive transfer recording medium

A thermal transfer recording medium having a thermally transferable coloring agent containing layer coated on a support. The coloring agent containing layer is separated into at least two layers, one of which is the upper layer and the other of which is the lower layer, and the layer farthermost from the support is a thermally transferable layer containing substantially no coloring agent.

Thermal transfer recording medium

A thermal transfer recording medium having a support and two coloring agent layers provided on the same side thereof, in which the first coloring agent layer is a layer containing a resin and a coloring agent coated on the support and the second layer is a layer containing a heat-fusible material and a coloring agent coated on the first layer, and the respective coloring agents in the two layers have isochromatic color tone. The thermal transfer recording medium provides low energy printing at high speed with little decrease in its density even after being used for many copies, thus permitting high density dye transfer images to be obtained over very many times.

There is disclosed a thermal transfer recording medium which comprises a support, a coloring agent layer containing a heat fusible substance formed on one surface of said support and a backing layer on the other surface of said support, wherein said backing layer contains a resin selected from urethane resins or vinyl chloride resins and a higher fatty acid which is solid or meta-solid at room temperature. The thermal transfer recording medium of this invention can suppress effectively generation of the sticking phenomenon, and has no deleterious effect on the thermal head without either contamination or abrasion of the thermal head.

A photosensitive silver halide emulsion comprising photosensitive silver halide grains which essentially consists of monodisperse globular-shaped grains. The grains may be prepared by adding a silver halide solvent to a silver halide emulsion containing monodisperse silver halide grains of regular crystal habit at a time between the complete formation of the monodisperse silver halide grains of regular crystal habit and before commencement of chemical sensitization.

Photosensitive silver halide emulsion

A silver halide photographic material containing a coupler capable of releasing a photographically useful group in a controllable timing.

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Hachioji, Japan

Yuji Hotta