Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7934316 | Charging roller, process cartridge and image forming apparatus | Toshiaki Kagawa, Tohru Sakuwa | 2011-05-03 |
| 7869743 | Image forming apparatus, process cartridge used therein, and production method of charging roller | Toshiaki Kagawa, Tohru Sakuwa | 2011-01-11 |
| 7668484 | Charging roller and image forming apparatus incorporating same | Toshiaki Kagawa, Tohru Sakuwa | 2010-02-23 |
| 6405009 | Image forming apparatus including system for recycling toner | Takashi Sakai, Takayuki Yamanaka, Atsushi Inoue, Jitsuo Masuda | 2002-06-11 |
| 6157807 | Cleaning device with electrically biased conveying members for collecting, separating and reusing developer | Kouichi Takenouchi, Masato Asanuma, Hiroo Naoi, Syouichi Fujita | 2000-12-05 |
| 5842089 | Development apparatus for developing electrostatic latent image held by holder by using nonmagnetic one component developer | Hisashi Kunihiro, Masato Asanuma, Yukihisa Imaue, Itaru Kawabata | 1998-11-24 |
| 5794097 | Image forming device with residual charge removal control | Masaaki Ohtsuki, Mihoko Okada, Mitsuru Tokuyama, Hirofumi Sakita, Masatsugu Nakamura | 1998-08-11 |