Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7079798 | Toner transfer back suppressing color image forming apparatus | Kazumi Suzuki, Ichiro Kadota, Hisashi Shoji, Atsushi Shinozaki | 2006-07-18 |
| 6708015 | Developing device and image forming apparatus using the same | Hisao Kurosu, Shigekazu Enoki | 2004-03-16 |
| 6597884 | Image forming apparatus including electrostatic conveyance of charged toner | Yohichiroh Miyaguchi, Takeshi Takemoto, Hiroyuki Okamoto, Katsuo Sakai, Nobuaki Kondou +2 more | 2003-07-22 |
| 5864733 | Developing device for image forming apparatus | Asami Mae, Manabu Mochizuki, Kentaro Matsumoto, Kenji Karashima, Kazuhiko Yuki +2 more | 1999-01-26 |
| 5394231 | Image forming apparatus capable of forming an erasable image | Kazuhisa Sudo, Mitsuo Tanaka, Koji Suzuki, Norimasa Sohmiya, Sadao Takahashi | 1995-02-28 |
| 5258248 | Image density control method for an image forming apparatus | Masaki Tokuhashi, Moriyuki Koike, Wataru Yasuda, Kouji Ishigaki, Takashi Bisaiji | 1993-11-02 |
| 5003354 | Method of removing a film from an image carrier of an image forming apparatus | Yoshio Takamiya, Kazuyuki Sugihara, Nobuyuki Koinuma, Yuji Sawai | 1991-03-26 |
| 4975748 | Method of removing a film from an image carrier | Nobuyuki Koinuma, Yoshio Takamiya, Kazuyuki Sugihara, Yuji Sawai | 1990-12-04 |
| 4910557 | Image density control method for an image forming apparatus | — | 1990-03-20 |
| 4632537 | Electrophotographic apparatus | — | 1986-12-30 |
| 4619522 | Dual mode image density controlling method | — | 1986-10-28 |
| 4522481 | Toner supply control method for electrophotographic copier | Yasushi Koichi | 1985-06-11 |
| 4508446 | Reproduction process control method | — | 1985-04-02 |
| 4487501 | Process of exposing photosensitive member | Shigeru Suzuki, Yutaka Koizumi, Nobuyuki Yanagawa, Koji Hirakura | 1984-12-11 |
| 4474455 | Electrophotographic copying process and apparatus having means for monitoring a fatigue recovery time | Kohji Hirakura, Kazuhiro Kimura | 1984-10-02 |
| 4330749 | Electrometer apparatus | Tadahiro Eda, Susumu Tatsumi | 1982-05-18 |
| 4318042 | Electrometer probe | Tadahiro Eda, Susumu Tatsumi | 1982-03-02 |
| 4279498 | Electrostatographic copying apparatus with automatic toner density control | Tadahiro Eda, Susumu Tatsumi, Yasushi Koichi | 1981-07-21 |
| 4277549 | Copy image adjustment method | Susumu Tatsumi, Tadahiro Eda | 1981-07-07 |
| 4266870 | Electrostatographic apparatus comprising developing bias means | Tadahiro Eda, Susumu Tatsumi | 1981-05-12 |
| 4213693 | Electrostatographic apparatus comprising improved developing bias control | Susumu Tatsumi, Tadahiro Eda | 1980-07-22 |
| 4200391 | Electrostatographic apparatus comprising document density sensing means | Koji Sakamoto, Susumu Tatsumi | 1980-04-29 |
| 4191568 | Photosensitive material for electrophotography with dye containing overlayer | Hideaki Ema, Satoshi Otomura, Kiyoshi Sakai | 1980-03-04 |