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Dive into the research topics where Yasufumi Mizuta is active.

Publication


Featured researches published by Yasufumi Mizuta.


Nippon Kagaku Kaishi | 1992

Special Articles on Organic and Inorganic Optical Materials. A New Type Monolayered Organic Photoconductor for Positive Charging Xerography. Chemistry and Characteristics.

Toru Nakazawa; Nariaki Muto; Yasufumi Mizuta; Akihiko Kawahara; Eiichi Miyamoto; Masahiro Tsutsumi; Toshimitsu Ikeda; Keiichi Nagahashi

今回,著者らが開発した電子写真用正帯電単層有機感光体(以下正帯電単層OPC:organicphoto-conductorと略)は,従来のセレン系感光体,あるいは負帯電積層有機感光体にはない種々の優れた特性を有するとともに,有機高分子材料の優れたフレキシビリティーと成形性を兼ね備え,かつエコロジーに対応した機能性有機電子材料デバイスである。本正帯電単層OPCは,電荷発生材料としてベリレン系顔料,電荷輸送材料としてヒドラゾン誘導体,ヒドラゾン誘導体の光励起一重項エネルギー失活剤としてのフルオレン誘導体等の組成物からなり,優れた電子写真感度,安定性および寿命をもつ。本報では,正帯電単層OPCの技術について,化学的側面を中心に材料設計の考え方や感光体の諸特性などを含め総合的に報告する。


Japanese Journal of Applied Physics | 1993

Electron transport in hole-transport-type photoconductive film

Toru Nakazawa; Akihiko Kawahara; Yasufumi Mizuta; Eiichi Miyamoto; Nariaki Mutoh

Photosensitivity of a film with dispersed pigment as carrier generation material in a hole-transport matrix was found to have a close connection with the electron-transport property of the film. Effects of the component materials on electron transport in the film were studied by means of photoinduced discharge of the surface potential applied to the film. Presence of pigment was found to be necessary for the electron transport to occur. We also found that the presence of hole-transport material in the matrix improved the electron transport between pigment particles.


Archive | 1999

Naphthalenetetracarboxylic acid diimide derivatives and photosensitive material for electrophotography

Kou Ishigami; Fumio Sugai; Yasufumi Mizuta


Archive | 1997

Naphthoquinone derivative and electrophotosensitive material using same

Yukimasa Watanabe; Sakae Saito; Hirofumi Kawaguchi; Akiyoshi Urano; Fumio Sugai; Atsushi Osaka-shi Fujii; Yasufumi Mizuta; Toshiyuki Fukami; Ichiro Yamazato; Yuji Tanaka; Eiichi Miyamoto; Hideo Nakamori; Mitsuo Ihara


Archive | 1994

Benzidine derivative and electrophotosensitive material using the same

Yasufumi Mizuta; Masashi Tanaka; Nariaki Muto; Toshiyuki Fukami; Hideo Nakamori; Mikio Kakui; Sakae Saito; Hiroshi Shiomi; Keisuke Sumida; Maki Uchida


Archive | 1995

Tryptoanthrinimine derivative and electrophotosensitive material using the same

Hirofumi Kawaguchi; Nobuko Akiba; Yukimasa Watanabe; Hiroaki Iwasaki; Yasuyuki Hanatani; Yasufumi Mizuta; Fumio Sugai; Sakae Saito; Syunichi Matsumoto; Toshiyuki Fukami; Ichiro Yamazato; Hisakazu Uegaito; Yuji Tanaka


Archive | 1993

Electrophotosensitive material containing disazo compound as charge-generating agent

Eiichi Miyamoto; Yasufumi Mizuta


Archive | 1991

A method for manufacturing an electrophotographic organic photoconductor.

Yasuyuki Hanatani; Yasufumi Mizuta; Takeshi Arakawa; Nariaki Tanaka


Archive | 1990

Electrophotographic photosensitive element comprising a surface protective layer comprising an etherified melamine-formaldehyde resin

Yasufumi Mizuta; Akihiko Kawahara; Kaname Nakatani; Nariaki Tanaka


Archive | 1990

ELECTROPHOTOGRAPHIC POLYVINYL ACETAL LAYER CONTAINING ELEMENT AND PROCESS OF PRODUCING

Yasuyuki Hanatani; Yasufumi Mizuta; Kaname Nakatani

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