Konica-minolta Holdings, Inc.

Konica Minolta Medical and Graphic, Inc.

Rie Sakuragi

Osamu Ishige

Kiyoshi Fukusaka

Noriyuki Kokeguchi

Satoru Ikesu

Takatugu Suzuki

An electrochromic display element includes a pair of counter electrodes having therebetween an electrochromic compound represented by Formula (1), wherein the electrochromic compound becomes colored when being oxidized and becomes colorless when being reduced by a driving operation of the electrodes: wherein Rrepresents a substituted or unsubstituted aryl group; and Rand Reach represent a hydrogen atom or a substituent; X represents &#x3e;N&#x2014;R, an oxygen atom or a sulfur atom; and Rrepresents a hydrogen atom or a substituent.

Electrochromic display element and full-color electrochromic display element

Disclosed is a photothermographic material comprising on support a light-insensitive silver salt of an aliphatic carboxylic acid, a light-sensitive silver halide and a reducing agent for silver ions, wherein the photothermographic material further comprises a copolymer comprising a backbone comprising a chain having a monomeric repeating unit, represented by formula (1) and a chain having a monomeric repeating unit, represented by formula (2). 

Copolymer and photothermographic material containing the same

A photothermographic material containing a support having on one side of the support a photosensitive layer containing: photosensitive silver halide grains; and a compound represented by Formula (1) or Formula (2):   wherein the symbols in Formulas (1) and (2) are indicated in the specification.

Squarylium compound and photothermographic material containing the same

A silver halide color photographic material is disclosed, comprising on a support a silver halide emulsion layer comprising an yellow dye forming coupler represented by formula (I):A&#x2014;B&#x2003;&#x2003;formula (I)wherein A is represented by formula (Ia), (Ia'), (Ia&#x2033;), (Ib), (Ic), (Id), (Id&#x2032;), (Ie), (Ie&#x2032;), (Ie&#x2033;), (If) or (If&#x2032;); and B is represented by formula (II) described in the specification.

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Hino, Japan

Rie Sakuragi