Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6281961 | Developing device with mechanism for smoothly circulating developer | Mineyuki Sako, Shinichi Yoshimoto, Yoshihiro Shojo, Yukihiko Okuno | 2001-08-28 |
| 6122472 | Developing apparatus having improved developer distribution | Mineyuki Sako, Shinichi Yoshimoto, Yukihiko Okuno | 2000-09-19 |
| 5963766 | Developing device | Yukihiko Okuno, Shinichi Yoshimoto, Kentaro Katori, Mineyuki Sako, Yoshihiro Shojo | 1999-10-05 |
| 5950056 | Developing device provided with three developer transport members | Mineyuki Sako, Kentaro Katori, Shinichi Yoshimoto | 1999-09-07 |
| 5682584 | Developer mixing and transporting device | Yoshihiro Hattori, Yoshinobu Hada, Shinichi Yoshimoto | 1997-10-28 |
| 5608495 | Imaging density control apparatus | Hideo Kitakubo, Mineo Yamamoto | 1997-03-04 |
| 5539500 | Image forming apparatus with humidity controlling device | Naoyoshi Kinoshita, Takeru Kinoshita, Takanobu Yamada, Hideo Kitakubo | 1996-07-23 |
| 5523832 | Electrophotographic image forming apparatus with controlled mixing of developer | Naoyoshi Kinoshita, Naotoshi Kawai, Yoshihito Aoki | 1996-06-04 |
| 5325122 | Apparatus for forming digital images | Yoshihiro Hattori, Hideaki Kodama | 1994-06-28 |
| 5311215 | Apparatus and method for forming digital image | Yoshihiro Hattori, Hideaki Kodama | 1994-05-10 |
| 5311256 | Image forming apparatus maintaining image density stability against humidity | Yoshihiro Hattori, Yoshinobu Hada | 1994-05-10 |
| 5305057 | Image forming apparatus having correction means for modifying image density signals according to a gradation correction table | Yoshihiro Hattori, Hideaki Kodama, Yoshikazu Naito, Takeru Kinoshita | 1994-04-19 |
| 5274424 | Image forming apparatus controlled according to smallest non-zero toner density | Yoshihiro Hattori, Hideaki Kodama, Takeru Kinoshita | 1993-12-28 |