Konica Corporation

Konishiroku Photo Industry Co., Ltd.

Akira Onishi

Tatsuo Tanaka

Tawara Komamura

Satoshi Kawakatsu

Tsukasa Ito

Yoriko Nakayama

Mari Honda

Shigeto Hirabayashi

Noritaka Nakayama

Taketoshi Yamada

Norio Miura

Yasushi Usagawa

Noboru Fujimori

Noriyasu Kita

Mitsuhiro Fukuda

Motoaki Sugino

Masayo Ishikawa

Masayo Takekoshi

Yoshiko Ogawa

Dye usable for photographic lightsensitive material, fine solid particle dispersion of said dye and silver halide photographic lightsensitive material containing said fine solid particle dispersion of said dye

The present invention relates to a mixture of dyes to form a black image. In particular, the present invention relates to a mixture that gives a black image having favorable stability to light and sufficient high density, and a thermal transfer recording material employing the mixture of dyes.

Mixture of dyes to form a black image

Disclosed is a metal chelate dye which is composed of a metal ion and a ligand that is a methine dye having 2 or more bonding positions capable of coordinate bond to the metal ion at the bonding position. A thermal transfer recording material, an ink used for an ink jet image recording process and a color toner for electrostatic image recording process are also disclosed.

Metallic chelating dye

A thermal transfer recording material is disclosed, comprising an azomethine dye represented by the following formula and a metal ion-containing compound. ##STR1##

Thermal transfer recording material

Disclosed is a silver halide photographic light-sensitive material comprising a support having thereon a hydrophilic colloidal layer comprising at least one silver salt of a compound having at least one acid group in the molecule, and the compound is represented by Formula I, Formula II or Formula III: ##STR1## wherein R.sup.1 and R.sup.2 independently represent a hydrogen atom or a group selected from the group consisting of an alkyl group, an alkenyl group, an aryl group and a heterocyclic residue; L.sub.1, L.sub.2, L.sub.3 and L.sub.4 independently represent a methine group; n.sub.1 is an integer of 0 to 3; n.sub.2 is an integer of 0, 1 or 2 and R.sup.3 represents an alkyl group or an alkenyl group. Q.sub.1 represents a non-metal atom group necessary to complete a 5-membered or 6-membered heterocyclic ring; ##STR2## wherein R.sup.4 and R.sup.5 independently represent a hydrogen atom or a group selected from the group consisting of an alkyl group, an alkenyl group, an aryl group, and a heterocyclic residue provided that R.sup.4 and R.sup.5 are not hydrogen atoms at the same time, and Ar represents an aryl group; and ##STR3## wherein R.sup.6 and R.sup.7 independently represent a hydrogen atom or a group selected from the group consisting of an alkyl group, an alkenyl group, an aryl group, and a heterocyclic residue provided that R.sup.6 and R.sup.7 are not hydrogen atoms at the same time; and Ar represents an aryl group.

Silver halide photographic light-sensitive material

An analytical element and method using the element for measuring a specific component in a fluid sample such as blood, serum, plasma, urine, sweat etc. The fluid sample is applied on the element with a labeled-material formed by binding the specific component or the analogue of it with a labeling material causing a signal. The element comprises a reaction layer and an absorption layer. The reaction layer contains a material which is capable of specifically binding with the component to be measured and the absorption layer contains a material which capable of binding with the labeled material and decreasing a signal caused by the labeling material. A strength of the signal caused labeled-material in the reaction layer is determined to measure the specific component.

Analytical element and the analytical method using the element

Disclosed are an analytical element for determining a specific component A in a test sample, based on the specific reaction between said specific component A and a substance B capable of binding specifically to said specific component A, by the use of a labelled material L comprising a label capable of providing a signal and said specific component A or comprising a label capable of providing a signal and a substance C capable of binding specifically to said specific component A, characterized in that said element has a porous reaction layer formed by the use of a mixture containing (a) a carrier having said substance B immobilized thereon and (b) a carrier having an absorbing substance D capable of binding specifically to said labelled material L which has not bound to said substance B or to said specific compound A, to thereby modulate said signal, and an analytical method employing the same.

Analytical element and method for determining a component in a test

The present invention relates to a silver halide photographic light-sensitive material, and particularly to a silver halide photographic light-sensitive material containing a hydrophilic colloidal layer dyed by a dye useful as a light-absorbing dye.

Silver halide photographic light-sensitive material containing oxonal

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Hino, Japan

Akira Onishi