Issued Patents All Time
Showing 26–35 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7693459 | Charging device for charging a surface of a latent image bearing member and an image forming apparatus including the charging device | Yoshio Sakagawa, Yuji Nagatomo | 2010-04-06 |
| 7684732 | Process unit and image forming apparatus including the same | Yoshio Sakagawa, Yuji Nagatomo | 2010-03-23 |
| 7664433 | Cleaning of a charging member in an image forming apparatus | Yoshio Sakagawa, Yuji Nagatomo | 2010-02-16 |
| 7627270 | Image forming apparatus that effectively charges a latent image carrier | — | 2009-12-01 |
| 7539442 | Charging unit, process unit including the same, and image forming apparatus including the same | Yuji Nagatomo | 2009-05-26 |
| 6782226 | Developing device | Junji Machida, Hidetoshi Miyamoto, Masahiko Matsuura, Yoshiko Yaoi, Makoto Shimazoe +1 more | 2004-08-24 |
| 6343201 | Developing apparatus comprising developing roller that is rotated upward from below in developing area and image forming apparatus using the same | Minoru Wada, Ichiro Demizu, Eiji Gyotoku, Akihiro Kawasaki, Yoichi Fujieda +1 more | 2002-01-29 |
| 6134414 | Developing apparatus using voltage waveforms with straight line portions | — | 2000-10-17 |
| 5940661 | Image forming apparatus with a charging member which removes smears on an image forming member | Masataka Yagi, Tamotsu Sakuraba, Narutaka Yoshida, Akira Hirota, Tsugihito Yoshiyama +3 more | 1999-08-17 |
| 5754926 | Charging device | Tamotsu Sakuraba, Hirofumi Hasegawa | 1998-05-19 |