Kanzaki Paper Manufacturing Co., Ltd.

Kanzaki Paper Mfg. Co., Ltd.

Hisanori Yagi

Isamu Nakano

Hisashi Tani

Kousuke Hamada

Yoshihiro Nishimura

Takeshi Murakami

Hironari Fujioka

Teruo Nakamura

Noritoshi Watanabe

Hajime Matsubayashi

Riyozo Yamamoto

Isao Shoji

A heat-sensitive recording material comprising a support and a recording layer provided on the support, said recording layer containing a colorless or pale-colored basic dye and a color developer capable of forming a color upon application of heat, wherein a hectorite clay is incorporated in at least one of layers constituting the recording material.

Heat-sensitive recording material

Disclosed is an electrostatic recording medium comprising an electroconductive support and as formed thereon a dielectric layer containing an insulating resin and a pigment, said dielectric layer carrying a surface static charge of a polarity opposite to that of a charge to be applied for image formation.

Process for electrostatic recording comprising charging dielectric sheet

Disclosed is an electrostatic recording medium comprising an electroconductive support and a dielectric layer formed on the electroconductive support and containing an insulating resin and a pigment, characterized in that the pigment comprises kaolin having a quartz content of not more than 2% by weight and that the dielectric layer has, on the surface thereof, projections based on the pigment and having an equivalent diameter of 5-15 um as spacers.

Electrostatic recording medium

An electrostatic record material comprising an electroconductive base sheet and a record layer formed on the base sheet and consisting essentially of an insulating resin, the record material being characterized in that the base sheet includes (i) an electroconductive layer comprising an ionic-conductive substance as its main electroconductive component, and (ii) an electroconductive layer comprising an electronic-conductive substance as its main electroconductive component. The electrostatic record material has excellent recording characteristics at usual humidity.

Electrostatic record material

The heat-sensitive record material comprises a base sheet and a color developing layer formed on at least one surface of said base sheet, said color developing layer comprising electron donating color forming material and acceptor reactive with said color forming material to develop a color, said color developing layer further including as a binder water soluble resinous material having carboxyl radicals, partly in the form of magnesium salt and partly in the form of another salt.

Heat-sensitive record material

The electrostatic recording material comprises an electroconductive transparent base sheet having a dielectric layer thereon. The base sheet is obtained by moistening a paper prepared from relatively lightly beaten pulp and then subjecting the moistened paper to a calendering treatment with the use of a heated embossing metal roll having a finely engraved surface with sharp reliefs.

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Hyogo, Japan

Hisanori Yagi