Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7099609 | Developing device | Fumitake Hirobe, Tomoyuki Sakamaki | 2006-08-29 |
| 7079795 | Image forming apparatus | — | 2006-07-18 |
| 6975825 | Developing apparatus including first and second magnets with poles arranged to supply developer without contamination | Tomoyuki Sakamaki, Fumitake Hirobe | 2005-12-13 |
| 6973281 | Developing apparatus with two developing chamber-rotatable member pairs | Fumitake Hirobe, Tomoyuki Sakamaki | 2005-12-06 |
| 6925269 | Developing apparatus | — | 2005-08-02 |
| 6704534 | Developing device having minimum magnetic field strength adjacent regulating member | — | 2004-03-09 |
| 6684046 | Image forming apparatus, image forming method and developing apparatus | — | 2004-01-27 |
| 6539192 | Developing device with developing mark reduction feature and cartridge using same | — | 2003-03-25 |
| 6473584 | Developing apparatus having carrying capability of screw lowered on developing sleeve side | Masanori Shida | 2002-10-29 |
| 6449442 | Developing apparatus employing permeability sensor to detect polymer toner density | Masanori Shida, Yoshiaki Kobayashi, Ichiro Ozawa | 2002-09-10 |
| 6389245 | Developing device and image forming apparatus | Masanori Shida, Yoshiaki Kobayashi, Ichiro Ozawa | 2002-05-14 |
| 6345162 | Image forming apparatus | Ichiro Ozawa, Yoshiaki Kobayashi, Masanori Shida | 2002-02-05 |
| 6332063 | Image forming apparatus with residual toner detection and collection features | Ichiro Ozawa, Masanori Shida | 2001-12-18 |
| 6304738 | Image forming apparatus wherein toner in a developing device toner and toner on an image bearing member satisfy a prescribed weight average diameter relationship | Yoshiaki Kobayashi, Masanori Shida, Ichiro Ozawa | 2001-10-16 |
| 6294305 | Image forming method and image forming apparatus | Yoshiaki Kobayashi, Masanori Shida, Ichiro Ozawa | 2001-09-25 |
| 6295432 | Image forming apparatus having an injection charging system and a two component contact development device | Masahiro Inoue, Yoshiaki Kobayashi, Kenichiro Waki | 2001-09-25 |
| 6219514 | Image forming apparatus and positioning of magnetic field generating devices within the same apparatus | Yoshiaki Kobayashi, Masanori Shida, Ichiro Ozawa | 2001-04-17 |
| 6104892 | Developing device and image forming apparatus | Yoshiaki Kobayashi, Masanori Shida, Ichiro Ozawa | 2000-08-15 |
| 6049687 | Developing apparatus | Yoshiaki Kobayashi, Masanori Shida, Ichiro Ozawa | 2000-04-11 |
| 5870656 | Image forming apparatus for effecting development and cleaning by using magnet brush | Yoshiaki Kobayashi, Koichi Hashimoto, Ichiro Ozawa | 1999-02-09 |
| 5576812 | Developing method with carrier chains contacted to image bearing member | Yukio Nagase, Kenichiro Waki, Hiroyuki Suzuki | 1996-11-19 |
| 5459559 | Magnetic brush developing method using a two-component developer | Yukio Nagase, Kenichiro Waki, Hiroyuki Suzuki | 1995-10-17 |
| 5438394 | Image forming apparatus usable with a carrier having magnetization controlled in relation to recording density | Hiroyuki Suzuki, Yukio Nagase, Kenichiro Waki, Kazuhisa Kemmochi | 1995-08-01 |
| 4825825 | Oil pan arrangement for horizontally mounted engine | Yoshiharu Chino, Nobuaki Wakita, Taro Ikeya, Toshiro Kanesaka, Kazuo Takeuchi | 1989-05-02 |