Konica Corporation

Mitsubishi Chemical Corporation

Nobuyuki Ishii

Ryoji Hattori

Shigehiro Kitamura

Hideki Takahashi

Toshiyuki Matsumura

Akihisa Murata

Shigeo Tsuji

Noriyuki Kidu

An IC card comprising: a core layer comprising therein an electronic element having a memory medium; an image receptive layer recording at least either text information or image information; and an optical variation element layer comprising an optical variation element, wherein the memory medium stores a characteristic information of the optical variation element layer and at least either the text information or the image information.

IC card and card certification method

An IC-mounted card substrate comprising a first sheet member having at least a first support, a second sheet member having at least a second support and an electronic part fixing layer having therein an IC-module and provided between the first sheet member and the second sheet member, wherein the second sheet member has a cushion layer comprising an actinic ray-cured resin on the second support, and a displacement value of needle penetration of the cushion layer obtained by a thermo-mechanical analysis (TMA) apparatus is not more than 30% at temperature of 100&deg; C. and not less than 30% at a temperature of 150&deg; C. based on the thickness of the cushion layer.

IC-mounted card substrate and IC-mounted personal-data certification card

A photosensitive composition comprising (1) a compound having at least one addition-polymerizable ethylenically unsaturated double bond, (2) an acidic vinyl copolymer soluble or swellable in alkaline water, which contains, in its molecule, a vinyl monomer having an aromatic hydroxyl group, as a constituting unit, (3) a photopolymerization initiator, and (4) a diazo resin, wherein the diazo resin is a copolycondensed compound which contains, in its molecule, an aromatic compound having a carboxyl group and/or a hydroxyl group, and an aromatic diazonium compound, as constituting units.

Photosensitive composition

Growing community of inventors

Hino, Japan

Nobuyuki Ishii