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Yasushi Koichi

Ricoh

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Publication

Featured researches published by Yasushi Koichi.

Archive | 2010

Image-forming apparatus and image-forming method

Koji Suzuki; Mitsuo Aoki; Hiroto Higuchi; Shinya Nakayama; Maiko Kondo; Bing Shu; Yasushi Koichi; Tadashi Kasai; Yutaka Takahashi

Archive | 1992

Toner concentration control method

Shin Hasegawa; Yasushi Koichi; Shinji Kato

Archive | 1988

Control of toner concentration in a developer

Yasushi Koichi

Archive | 1988

Corona wire cleaning device utilizing a position detection system

Yasushi Koichi; Haruzi Mizuishi; Mutuko Funaki; Tetsuya Fujioka

Archive | 1990

Image density control method

Norimasa Sohmiya; Yasushi Koichi; Kazunori Karasawa

Archive | 1989

Image density control method for an image forming apparatus

Yasushi Koichi; Norimasa Sohmiya; Kazunori Karasawa

Archive | 2002

Image forming method and toner for use in the method

Mitsuo Aoki; Kumi Hasegawa; Toshiaki Higaya; Yasushi Koichi; Yutaka Takahashi; Tadashi Kasai

Archive | 2004

Image forming apparatus controlling polarity of residual toner and process cartridge for use in the same

Shigekazu Enoki; Koji Suzuki; Yasushi Koichi; Osamu Ariizumi; Kumiko Hatakeyama; Koichi Kato; Masahide Yamashita; Toshiyuki Kabata; Jun Yura

Archive | 1993

Toner recovery system which detects linear movement of a recovered toner transporter

Makoto Arai; Yasushi Koichi; Toshitaka Yamaguchi; Yoshiyuki Tanimoto

Archive | 1979

Electrostatographic copying apparatus with automatic toner density control

Tadahiro Eda; Chikara Imai; Yasushi Koichi

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Collaboration

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Koji Suzuki

Ricoh

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Tadashi Kasai

Ricoh

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Yutaka Takahashi

Ricoh

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Mitsuo Aoki

Ricoh

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Bing Shu

Ricoh

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Kumiko Hatakeyama

Ricoh

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Shigekazu Enoki

Ricoh

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Shigeru Watanabe

Ricoh

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Osamu Ariizumi

Ricoh

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Chikara Imai

Ricoh

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