Oji Paper Co., Ltd.

New Oji Paper Co, Ltd.

Kohei Michikawa

Kunitaka Toyofuku

Yasuyoshi Morita

Takehiro Minami

Yoshihiro Shimizu

Masato Kawai

Hiroaki Sato

A heat-sensitive recording material comprises a recording layer containing a colorless or light-colored basic dye and a developing agent on a support. The recording layer further contains a polyethylene having a melting point not lower than 60.degree. C., which is obtained as an emulsion not comprising a surfactant. The heat-sensitive recording material may be prepared by coating on a support an aqueous coating composition, which contains a colorless or light-colored basic dye and a developing agent together with a polyethylene emulsion comprising a polyethylene having a melting point not lower than 60.degree. C. but no surfactant (e.g. emulsifier), to form a recording layer.

Heat-sensitive recording material

An electrophotographic material having an enhanced sensitivity to laser rays comprises,

Laser-sensitive electrophotographic material

A composition useful for rapidly and safely effecting a fat-desensitizing treatment for litho printing plates with a high efficiency, and for providing a hydrophilic membrane having a high durability in printing operations on the surfaces of the litho printing plates, comprises (A) a phytic acid or its functional derivative; (B) a metal salt of the formula MX.sub.1, wherein M=a divalent metal cation, X=monovalent or divalent anion and 1=1 or 2; (C) a glycol compound of the formula, ##STR1##

Fat-desensitizing composition for litho printing plates comprising

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Yokohama, Japan

Kohei Michikawa