Konishiroku Photo Industry Co., Ltd.

Konica Corporation

Satoshi Kawakatsu

Noritaka Nakayama

Katsunori Katoh

Kaoru Shinozaki

Yutaka Kaneko

Toshihiko Kimura

Shigeto Hirabayashi

Hidetaka Ninomiya

Hiroshi Kashiwagi

Kenji Kumashiro

Koichi Hatta

Toshifumi Iijima

Tsukasa Ito

Akira Onishi

Kosaku Masuda

Kaoru Miyagi

Mikio Koyama

Kenichiro Okaniwa

Fumio Ishii

Hiroshi Sugita

Takashi Uchida

Masahiko Yamasaki

Hajime Wada

Yuji Hotta

Kenji Kadokura

Satoshi Matsunaga

Yasuko Matsubara

Tomoji Akashi

Masayo Takekoshi

Toshijumi Iijima

Masayo Ishikawa

Hiroko Ohya

Disclosed is a multilayered assay element in which the influence by the bilirubin contained in the sample fluid is substantially eliminated. The assay element of the present invention contains a bilirubin-trapping agent of the formula

Multilayered assay element

A silver halide photo-sensitive material having at least one silver halide emulsion layer on a support, characterized by that said silver halide emulsion layer contains at least one magenta-forming coupler of 1H-pyrazolo[ 3,2-c]-s-triazole type which is substituted by a tertiary alkyl group at the 3-position and, by another releasable group than a hydrogen atom at the 7-position.

Silver halide color photo-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

A method for measuring a specific component, which comprises having a complex conjugate comprising a specific component to be measured and a labelled body having peroxidase as the label carried on a support, and forming and depositing a dye on said complex conjugate through the enzyme reaction of peroxidase by use of the three of hydrogen peroxide, an aromatic primary amine compound and either one of an active methylene compound or a phenol compound.

Method for measuring specific component using peroxidase enzyme reaction

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

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

Silver halide photographic light-sensitive material

A silver halide color photographic material that has at least one silver halide emulsion layer on a support is disclosed. Said silver halide emulsion layer contains at least one magenta coupler having the following formula: ##STR1## wherein R.sub.1 is a tertiary alkyl group; R.sub.2 is a primary alkyl group; and X is a halogen atom.

Silver halide color photographic material containing a 1H-pyrazolo [3,2-C]-

A silver halide color photographic material is disclosed which has at least one silver halide emulsion layer on a support, said silver halide emulsion layer containing at least one magenta coupler having the following formula: ##STR1## wherein R.sub.1 is a tertiary alkyl group; R.sub.2 is a secondary or tertiary alkyl group; X is a leaving group other than a hydrogen atom that leaves upon reaction with the oxidation product of a color developing agent.

Silver halide color photographic material containing a magenta coupler

A silver halide color photographic light-sensitive material comprising a reflective support bearing thereon a green light-sensitive silver halide emulsion layer containing a t-alkyl 1H-pyrazolo[3,2-C]-5-triazole magenta forming coupler represented by Formula (I) defined in the specification: a blue light-sensitive silver halide emulsion layer containing a t-butyl acylacetamide yellow-forming coupler represented by Formula (II) defined in the specification and a red light-sensitive silver halide emulsion layer containing a phenolic cyan-forming coupler represented by Formula (III) or (IV) defined in the specification.

A silver halide color photographic light-sensitive material whose magenta dye-forming layer forms a magenta dye image having an absorption maximum from 550 nm to 560 nm and an advantageous absorption spectrum for color reproduction is provided by a silver halide color photographic light-sensitive material comprising a support having thereon at least one silver halide emulsion layer, wherein the at least one silver halide emulsion layer contains a 1H-pyrazolo[3,2-C]-s-triazole-type magenta coupler, and the above silver halide emulsion layer containing the magenta coupler and/or a silver halide emulsion layer having substantially the same color sensitivity as does the above silver halide emulsion layer containing the magenta coupler contains a pyrazolone-type magenta coupler.

Silver halide color photographic light-sensitive material

A silver halide color photographic material is disclosed which has at least one silver halide emulsion layer on a support, said silver halide emulsion layer containing at least one magenta coupler of formula (I) and at least one non-color forming phenolic compound: ##STR1## wherein R.sub.1 is an alkyl or aryl group; R.sub.2 is a monovalent group; R.sub.3 is an alkylene group; Y is a halogen atom, a hydroxy or alkyl group; Z is a group that can be eliminated upon coupling reaction with the oxidized product of a color developing agent; X is a divalent bonding group or an alkylene group having 1 to 5 carbon atoms; m is an integer of 0 to 4; and n is an integer of 0 to 5.

Silver halide color photographic material

A silver halide color photographic material is disclosed. The material contains a photographic magenta coupler of formula (I) and a phenolic compound of formula (II) within a silver halide emulsion layer: ##STR1## (wherein R.sub.1 and R.sub.2 are each an alkyl group or an aryl group; Z is a hydrogen atom or a group that can be eliminated upon coupling reaction with the oxidized product of a color developing agent); ##STR2## (wherein R.sub.3 is an alkyl group, an alkoxy group, an aryl group or an amino group; R.sub.4 is an alkyl group, an alkoxy group or a halogen atom; s is an integer of 0 to 2, provided that when s is 2, R.sub.4 may be the same or different).

A silver halide color photographic material is disclosed which has at least one silver halide emulsion layer on a support, said silver halide emulsion layer containing at least one magenta coupler of the following formula (I) or (II): ##STR1## wherein R.sub.1 and R.sub.4 are each a hydrogen atom, an alkyl group or an aryl group; R.sub.2 and R.sub.6 are each a monovalent group; R.sub.3 is an alkyl group, an aryl group or a heterocyclic group; R.sub.5 is an alkyl group or an aryl group; R.sub.7 is an alkylene group, an arylene group or a bivalent organic group having at least one alkylene bonded to at least one arylene; R.sub.8 is an alkyl group, an alkenyl group, an aryl group or a heterocyclic group; X is a single bond or an alkylene group having 1 to 5 carbon atoms; Z is a hydrogen atom or a group that can be eliminated upon coupling reaction with the oxidized product of a color developing agent; and m is an integer of 0 to 4.

A silver halide color photographic light-sensitive material containing a phenol cyan coupler having an ureido group in the 2-position dispersed in a phthalic ester.

Growing community of inventors

Hachioji, Japan

Satoshi Kawakatsu