Mitsubishi Chemical Industries Limited

Mitsubishi Kasei Corporation

Toshihiko Yoshitomi

Yukio Yamaguchi

Yoshimitsu Kobayashi

Hiromi Horiuchi

Yasuo Kamoshita

Kiyoshi Sekihara

Yukio Watanabe

Kiyoshi Takahashi

Tsugio Kaneko

Yoshiyuki Kisaka

Yukinori Minagawa

Kunihiko Yamaguchi

Makoto Konagai

Heihachi Yushina

Jun Sasaki

Hidemi Yoshida

Michikazu Horie

Takanori Tamura

Mitsuaki Ohgaki

Fumikazu Yajima

Takeshi Omori

An insulative magnetic toner disclosed herein comprises a magnetic powder, a negative charge control agent, a binder resin and a compound having phenazine ring amorphous-silicon photoreceptor. The magnetic toner according to the invention is effective for preventing the occurrence of picture image blurring under high humidity when used in an amorphous-silicon photoreceptor.

Magnetic toner for electrophotography

Disclosed herein is an optical recording medium for recording informations by irradiating the optical recording medium with a laser beam to form a hole or a deformed part thereon, said optical recording medium comprising a substrate and a recording layer containing at least Te, Se and F in the amounts of from 35 to 94.9 atomic % of Te, from 5 to 25 atomic % of Se and from 0.1 to 40 atomic % of F, produced by a reactive sputtering, said Se being derived from selenium fluoride and a sputtering target of Te or a sputtering target comprising Te-Se-alloy, and a process for producing the same.

Optical recording medium and process for producing the same

An amorphous silicon photoreceptor for electrophotography having a specific surface roughness is disclosed herein. Also provided are a process for the preparation and/or regeneration of the material and improved methods for electrophotography, which use a special abrasive. The material enables the electrophotography without occurance of any image blurring under high humidity conditions.

Amorphous silicon hydride photoreceptors for electrophotography, process

Disclosed herein is a magneto-optical medium comprising a magnetic layer, a protective layer of a complex oxide containing oxides of aluminum and a base plate.

Magneto-optical medium

A substrate for an amorphous silicon semiconductor material characterized in that a metal or alloy film is formed on the surface of a metal substrate by means of an electroplating treatment.

Substrate for amorphous silicon semiconductor material

Yttrium ions are selectively extracted by contacting an acid phosphoric ester with an aqueous solution containing diethylenetriaminepentaacetic acid and yttrium ions and one or more heavy rare earth (atomic number of 64 to 71) ions.

Selective extraction of yttrium ions

Growing community of inventors

Yokohama, Japan

Toshihiko Yoshitomi