Dai Nippon Insatsu Kabushiki Kaisha

Yoshiaki Hida

Shigeki Umise

Kyoichi Yamamoto

Akira Mizobuchi

Kyohei Takahashi

Toshiyuki Suzuki

Masanori Akada

Seiji Take

Ryohei Takiguchi

Satoshi Takeuchi

Satoshi Ishihara

Hideki Takematsu

Masao Gogami

A heat transfer sheet comprising a base film and a hot melt ink layer formed on one surface of the base film, said hot melt ink layer comprising one or more components which impart filling to the printed areas of a transferable paper during transferring. Another type of a heat transfer sheet comprising a base film, a hot melt ink layer laminated on one surface of the base film, and a filling layer laminated on the hot melt ink layer, said filling layer comprising one or more components which impart filling to the printed areas of a transferable paper during transferring. According to the heat transfer sheets, high quality printing can be attained even at a high speed without any staining.

Heat transfer sheet

The IC card of the present invention comprises an IC card comprising an IC module embedded in a card substrate, said IC card having a reinforcing sheet layer laid in the planar direction of the card so as to cover at least the peripheral portion of the boundary between the card substrate and the IC module, and/or has a reinforcing member comprising at least a part of the side portion of said IC module extended in the outer circumferential direction, and it is excellent in mechanical strength and flexibility against bending of card.

IC card

A heat-resistant thermal transfer sheet comprising a base film provided on one surface thereof with a hot melt ink layer and with a heat-resistant protective layer on the other surface thereof. The heat-resistant protective layer is produced from a composition comprising (a) a thermoplastic resin having an OH or COOH group, (b) a polyamine or polyisocyanate, and (c) a thermoplastic resin, or a composition based on a silicone-modified resin. The heat transfer sheet of the present invention prevents sticking and blocking problems and makes it possible to carry out printing smoothly.

Heat-resistant, thermal-sensitive transfer sheet

An image forming material comprises an image forming layer disposed on a support and comprising (a) aqueous composition comprising a hydrophilic binder layer containing metal developing nuclei or their precursor compound, and water and (b) an organic composition comprising an oil-soluble development inhibitor which is a compound having a diazo group or azide group and a water-miscible organic solvent. An image is formed by exposing the image forming layer to patternized light and then contacting it with a developer containing reducible metal ions and a reducing agent thereby to form an image constituted by metal particles grown at the light-exposed parts.

Method and material for image formation

A novel thermosensitive recording material suitable for credit cards, season tickets or passes, and the like to be used for a relatively long period comprises a substrate, a first thermosensitive layer having an acidic developer dispersed in a solid vehicle and laminated on the substrate, and a second thermosensitive layer having a leuco-dye dispersed in a solid vehicle and laminated on the first thermosensitive layer. The recording material can further have a primer layer, an overcoat layer and/or a magnetic recording layer.

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Tokyo, Japan

Yoshiaki Hida