Toyo Ink Manufacturing Company

Hitachi, Ltd.

Toppan Printing Co., Ltd.

Toyo Ink Mfg. Co., Ltd.

Isao Kumano

Manabu Sawada

Shigeru Suzuki

Hirosada Morishita

Atsushi Kakuta

Yasuki Mori

Kotaro Araya

Shigeo Suzuki

Hiromitsu Katsura

Shigemasa Takano

Tsuneo Tanaka

Hiroyuki Oka

Tsutomu Naganuma

Hiroji Kumagai

Takashi Kanno

Tuneo Tanaka

Sigeru Hirayama

The present invention relates to a lithographic printing plate which can eliminate disadvantages of conventional zinc oxide master papers and has sensitivity sufficient for practical use in respect of long wavelength laser light. The invention contemplates to provide the lithographic printing plate which is fabricated by charging an electrophotographic plate involving a photoconductive layer on a conductive substrate, the photoconductive layer being prepared by dispersing a mixture containing 50 wt % or less of a phthalocyanine pigment/(zinc oxide and zinc sulfide) into a binder resin, exposing the electrophotographic plate to an image to form the electrostatic latent image, developing the exposed electrophotographic plate by the use of an ink receptive toner, and fixing the plate thus developed.

Lithographic printing plate

The disclosure is concerned with an electrophotographic recording medium having a layer of a photoconductive material containing at least one member selected from the group consisting of .tau., .tau.', .eta., and/or .eta.' form metal free phthalocyanine, the layer being formed on an electroconductive supporter. The recording medium of this invention is characterized in that the recording medium exhibits high sensitivity to longer wavelength light.

Electrophotographic recording medium containing .tau. and .eta.

A process for producing a dimensionally stable polyolefin molding, characterized by using a specific compound or a mixture thereof with at least one ordinary pigment, the specific compound being obtained by reacting a halogenated phthalic compound with hydrazine or an organic diamine.

Process for the preparation of polyolefin moldings

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Tokyo, Japan

Isao Kumano