Issued Patents All Time
Showing 26–50 of 55 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8948647 | Belt device and image forming apparatus incorporating same having a cleaning device which cleans utilizing different polarities | Kenji Sugiura, Osamu Naruse, Hisashi Kikuchi, Yoshiki Hozumi | 2015-02-03 |
| 8929760 | Transfer device with bias output device and image forming apparatus including same | Shinya Tanaka | 2015-01-06 |
| 8731431 | Belt device and image forming apparatus incorporating same having a cleaning device which cleans utilizing different polarities | Kenji Sugiura, Osamu Naruse, Hisashi Kikuchi, Yoshiki Hozumi | 2014-05-20 |
| 8712267 | Image forming apparatus and image forming method | Shinya Tanaka, Haruo Iimura, Shinji Aoki, Yasuhiko Ogino, Keigo Nakamura | 2014-04-29 |
| 8600256 | Cleaning device and image forming apparatus including same | Yuu Sakakibara, Kenji Sugiura, Hisashi Kikuchi, Yoshiki Hozumi, Osamu Naruse | 2013-12-03 |
| 8548350 | Cleaning device and image forming apparatus | Yoshiki Hozumi, Kenji Sugiura, Osamu Naruse, Hisashi Kikuchi, Yuu Sakakibara | 2013-10-01 |
| 8437657 | Cleaning apparatus and image forming apparatus | Hisashi Kikuchi, Kenji Sugiura, Osamu Naruse, Yoshiki Hozumi, Yuu Sakakibara | 2013-05-07 |
| 8433213 | Cleaning device and image forming apparatus | Yoshiki Hozumi, Kenji Sugiura, Osamu Naruse, Hisashi Kikuchi, Yuu Sakakibara | 2013-04-30 |
| 8326174 | Cleaning unit for an electrophotographic image forming apparatus having a polarity control member | Osamu Naruse, Hidetoshi Yano, Kenji Sugiura, Hiroki Nakamatsu | 2012-12-04 |
| 8280295 | Cleaning device, image forming apparatus including the device, and process cartridge including the device | Osamu Naruse, Hidetoshi Yano, Kenji Sugiura, Yasuyuki Yamashita | 2012-10-02 |
| 8190077 | Cleaning device and image forming apparatus | Osamu Naruse, Hidetoshi Yano, Kenji Sugiura, Hiroki Nakamatsu | 2012-05-29 |
| 8086141 | Electric charging apparatus and image forming apparatus using the same | Yukimichi Someya, Eiichi Ohta, Takuro Sekiya, Yasuo Katano, Shohji Tanaka +2 more | 2011-12-27 |
| 8041281 | Cleaning device, image forming apparatus, and process cartridge | Hidetoshi Yano, Kenji Sugiura, Osamu Naruse, Yasuyuki Yamashita | 2011-10-18 |
| 8019268 | Polarity controlling device, and cleaner and image forming apparatus using the polarity controlling device | Hiroki Nakamatsu, Kenji Sugiura, Osamu Naruse, Hidetoshi Yano | 2011-09-13 |
| 7929897 | Cleaning unit, process cartridge, and image forming apparatus using the same | Hidetoshi Yano, Kenji Sugiura, Osamu Naruse, Yasuyuki Yamashita | 2011-04-19 |
| 7903995 | Cleaning device, image forming apparatus, and process cartridge | Hiroki Nakamatsu, Kenji Sugiura, Osamu Naruse, Hidetoshi Yano | 2011-03-08 |
| 7873298 | Cleaning device, process cartridge, and image forming apparatus | Yasuyuki Yamashita, Hidetoshi Yano, Oasamu Naruse, Kenji Sugiura | 2011-01-18 |
| 7831177 | Discharge device, image forming unit and apparatus | Yukimichi Someya | 2010-11-09 |
| 7817954 | Cleaning unit, image carrier unit including same, and image forming apparatus including same | Hidetoshi Yano, Osamu Naruse, Kenji Sugiura, Hiroki Nakamatsu | 2010-10-19 |
| 7809321 | Cleaning device, process cartridge and image forming apparatus | Hidetoshi Yano, Osamu Naruse, Kenji Sugiura, Yasayuki Yamashita | 2010-10-05 |
| 7728503 | Electron emission element, charging device, process cartridge, and image forming apparatus | Eiichi Ohta, Takuro Sekiya, Yukimichi Someya, Shohji Tanaka, Yasuo Katano +2 more | 2010-06-01 |
| 7715760 | Charging device, and process cartridge and image forming apparatus using the same | Yukimichi Someya, Sadayuki Iwai, Katsufumi Kumano, Eiichi Ohta | 2010-05-11 |
| 6987944 | Cleaning device and image forming apparatus using the cleaning device | Masahiko Shakuto, Yasushi Nakazato, Osamu Naruse, Takahiko Tokumasu, Kenji Sugiura +1 more | 2006-01-17 |
| 6823163 | Image forming apparatus including an electric field having an oscillation component between an image carrier and a developer carrier | Tsukuru Kai, Hisashi Shoji, Nobutaka Takeuchi | 2004-11-23 |
| 6799012 | Cleaning device and image forming apparatus using the same | Masahiko Shakuto, Yasushi Nakazato, Osamu Naruse | 2004-09-28 |