Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5665502 | Electrophotographic photoreceptor and method for producing the photoreceptor | Kunio Ohashi, Mitsuru Tokuyama, Mamoru Nozomi, Tadashi Umehara, Toshiya Asari | 1997-09-09 |
| 5536607 | Image correcting method using an electrophotographic photoreceptor | Kunio Ohashi, Mitsuru Tokuyama, Mamoru Nozomi, Tadashi Umehara, Toshiya Asari | 1996-07-16 |
| 5384623 | Process control stabilizing system including a cleaning device for the corona wires | Kunio Ohashi, Mitsuru Tokuyama | 1995-01-24 |
| 5381212 | Photoreceptor for electrophotography | Teruhiko Noguchi, Jitsuo Masuda, Katsushi Inoue, Tatsuo Tanaka, Kunio Otsuki +1 more | 1995-01-10 |
| 5194900 | Developer cartridge having easily removable sealing material | Hideaki Hagihara | 1993-03-16 |
| 4970557 | Electrophotographic apparatus controlling image quality according to condition of deterioration | Jitsuo Masuda, Hideaki Hagihara, Junji Morimoto, Ken Yamagishi, Teruhiko Noguchi +1 more | 1990-11-13 |
| 4962408 | Device for removing defective developer agent from a developing unit of an image formation apparatus | Jitsuo Masuda, Junji Morimoto, Ken Yamagishi, Itaru Kawabata, Teruhiko Noguchi | 1990-10-09 |
| 4958197 | Cleaning blade with a surface active antistatic agent | Itaru Kawabata, Hidenobu Yamane, Yoshiharu Tsujimoto, Shinya Gotoh, Masayoshi Nawa | 1990-09-18 |
| 4947473 | Developing device for copier | — | 1990-08-07 |
| 4935777 | Method of stabilizing surface potential of photoreceptor for electrophotography | Teruhiko Noguchi, Yuji Okamoto, Yoshiharu Tsujimoto, Yuhi Yui, Itaru Kawabata +2 more | 1990-06-19 |
| 4847652 | Image transfer device | Zitsuo Masuda, Yoshiharu Tsujimoto, Masashi Hirai | 1989-07-11 |
| 4827306 | Discharging apparatus and method for use in a copying machine | Yoshiharu Tsujimoto, Yuhi Yui, Teruhiko Noguchi, Itaru Kawabata | 1989-05-02 |
| 4771318 | Copying machine with multiple transport function | Teruhiko Noguchi, Itaru Kawabata, Yoshiharu Tsujimoto, Hiromu Sasaki | 1988-09-13 |
| 4654286 | Method of removing a charge from an electrophotographic photoreceptor | Yoshiharu Tsujimoto, Yuhi Yui, Tadashi Akiyama, Koichi Irihara | 1987-03-31 |
| 4630918 | Image compensating method in a copying machine | Yuhi Yui | 1986-12-23 |
| 4610528 | Electrophotographic copying machine with delayed development bias voltage application | Kozo Takahashi | 1986-09-09 |
| 4540270 | Electrophotographic copying machine with a pre-copy system | Yoshiaki Imanaka | 1985-09-10 |
| 4339783 | Alternating current corona discharge apparatus | Yoshihisa Miwa, Shoshichi Kato, Hiroyuki Kawataki | 1982-07-13 |
| 4314755 | Bias voltage controlled developing system in an electrophotographic copying machine | — | 1982-02-09 |