Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7548712 | Image forming apparatus, drum unit, image forming module, and method of insertion and removal of a damper into and from an image carrier drum | Takatsugu Fujishiro, Takeo Suda, Hideki Zemba | 2009-06-16 |
| 7321742 | Image forming apparatus, drum unit, image forming module, and method of insertion and removal of a damper into and from an image carrier drum | Takatsugu Fujishiro, Takeo Suda, Hideki Zemba | 2008-01-22 |
| 7295795 | Image forming apparatus and an impurity collecting device associated with registration rollers | Koji Suzuki, Hideaki Mochimaru, Naoki Iwata, Kunihiko Tomita, Hiroshi Yokoyama +4 more | 2007-11-13 |
| 7197269 | Method, system and apparatus for transferring toner images to both sides of a recording medium | Yasukuni Omata, Hideaki Mochimaru, Chiemi Kaneko, Koji Suzuki, Naoki Iwata +4 more | 2007-03-27 |
| 7010246 | Image forming apparatus, drum unit, image forming module, and method of insertion and removal of a damper into and from an image carrier drum | Takatsugu Fujishiro, Takeo Suda, Hideki Zemba | 2006-03-07 |
| 7003251 | Image forming method having transfer temperature difference and apparatus for the same | Koji Suzuki, Hideaki Mochimaru, Naoki Iwata, Kunihiko Tomita, Hiroshi Yokoyama +4 more | 2006-02-21 |
| 6983117 | Image forming apparatus configured for double sided printing | Norimasa Sohmiya, Koji Suzuki, Hideaki Mochimaru, Naoki Iwata, Kunihiko Tomita +4 more | 2006-01-03 |
| 6898398 | Apparatus for image forming on both sides of a recording medium and image forming method, and image carrier for the same | Yasukuni Omata, Hideaki Mochimaru | 2005-05-24 |
| 5869213 | Multicolor image forming method preventing contamination of toner on an image carrier with toner on a developing carrier | Naoki Iwata, Tomotoshi Nakahara, Ichiro Komuro | 1999-02-09 |
| 5737680 | Image forming apparatus with toner recycling device | Hiromitsu Takagaki, Shinji Kato, Shigeru Watanabe, Mayumi Yoshida, Shunji Kato | 1998-04-07 |
| 5682572 | Image density control method for an image recorder | Kazuo Murai, Shinji Kato | 1997-10-28 |
| 5604575 | Image forming apparatus with toner recycling device | Hiromitsu Takagaki, Shinji Kato, Shigeru Watanabe, Mayumi Yoshida, Shunji Kato | 1997-02-18 |
| 5541029 | Multicolor image forming method preventing mixing of colors | Naoki Iwata, Tomotoshi Nakahara, Ichiro Komuro | 1996-07-30 |
| 5493382 | Image forming apparatus with toner recycling device | Hiromitsu Takagaki, Shinji Kato, Shigeru Watanabe, Mayumi Yoshida, Shunji Kato | 1996-02-20 |
| 5475476 | Image density control method for an image recorder | Kazuo Murai, Shinji Kato | 1995-12-12 |
| 5438401 | Multicolor image forming method and apparatus therefor | Hitoshi Ishibashi | 1995-08-01 |
| 5258813 | Developing device for a multicolor image forming apparatus having a toner particle size distribution which prevents mixture of toners of different colors | Tomotoshi Nakahara | 1993-11-02 |
| 5231452 | Image forming control method using variable state factors and fuzzy computation | Shinji Kato, Tetsuya Morita, Mitsuhisa Kanaya | 1993-07-27 |
| 5008711 | Image forming apparatus | Koji Sakamoto, Misao Tanzawa, Nobuo Iwata, Susumu Takahashi, Kenya Komada | 1991-04-16 |
| 4931374 | Electrophotographic positive charging toner containing a copper phthalocyanine blue pigment | Masami Tomita, Toshiyasu Kawabata, Toshiki Nanya | 1990-06-05 |
| 4554233 | Electrophotographic toner containing triazolium compound as charge controlling agent | Mitsuru Hashimoto, Toshiyasu Kawabata, Toshiki Nanya | 1985-11-19 |