Issued Patents All Time
Showing 26–50 of 67 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8135314 | Developing device, process cartridge, and image forming apparatus, method of developing latent image | Yasuo Miyoshi, Hisashi Kikuchi, Norio Kudo, Nobuo Iwata | 2012-03-13 |
| 7995954 | Developing device and image forming apparatus including same which includes a supply path and a recovery path | Norio Kudo, Yasuo Miyoshi, Hisashi Kikuchi, Nobuo Iwata | 2011-08-09 |
| 7099611 | Method and apparatus for image forming capable of reducing mechanical stresses to developers during transportation for development | Katsuhiro Aoki, Hiroshi Ikeguchi | 2006-08-29 |
| 6978109 | Image forming apparatus | Hisashi Shoji, Kei Yasutomi, Nekka Matsuura, Nobutaka Takeuchi, Hirokatsu Suzuki | 2005-12-20 |
| 6901233 | Image forming apparatus | Katsuhiro Aoki, Hajime Oyama, Osamu Ariizumi, Hisashi Shoji, Takashi Hodoshima +1 more | 2005-05-31 |
| 6823163 | Image forming apparatus including an electric field having an oscillation component between an image carrier and a developer carrier | Naomi Sugimoto, Hisashi Shoji, Nobutaka Takeuchi | 2004-11-23 |
| 6819901 | Developing method and a developing device for image forming apparatus | Kei Yasutomi, Hisashi Shoji, Nobutaka Takeuchi | 2004-11-16 |
| 6819892 | Electrophotographic image forming apparatus including air conditioning means for removing harmful substances | Yasushi Nakazato, Yusuke Takeda, Satoshi Muramatsu, Masanori Suzuki, Yasuo Suzuki +1 more | 2004-11-16 |
| 6792234 | Developing device having a developer carrier including main and auxiliary magnetic poles and image forming apparatus using the same | Hiroshi Ikeguchi, Takeyoshi Sekine, Toshihiko Yamanaka | 2004-09-14 |
| 6782225 | Image forming apparatus having plurality of developing sections with particular magnetic flux density | Hisashi Shoji | 2004-08-24 |
| 6778805 | Image forming apparatus having a developing device with a magnet brush | Nobutaka Takeuchi, Hisashi Shoji, Kei Yasutomi, Takeyoshi Sekine, Osamu Ariizumi | 2004-08-17 |
| 6757511 | Image forming apparatus and method using a magnetic toner brush | Naomi Sugimoto | 2004-06-29 |
| 6757509 | Image forming apparatus | Hisashi Shoji, Kei Yasutomi, Nekka Matsuura, Nobutaka Takeuchi, Hirokatsu Suzuki | 2004-06-29 |
| 6721516 | Image forming apparatus | Katsuhiro Aoki, Hajime Oyama, Osamu Ariizumi, Hisashi Shoji, Takashi Hodoshima +1 more | 2004-04-13 |
| 6701114 | Image forming apparatus and image forming process unit with developer carried on a developer carrier | Takeyoshi Sekine, Hiroshi Ikeguchi | 2004-03-02 |
| 6671484 | Image forming apparatus having developing device with magnet roller with particular magnetic flux density | Yasuo Miyoshi | 2003-12-30 |
| 6658227 | Development method apparatus, image formation and process cartridge for suppressing variation in toner charge | Hajime Oyama, Katsuhiro Aoki, Takashi Hodoshima, Yasuo Miyoshi, Ichiro Kadota | 2003-12-02 |
| 6597884 | Image forming apparatus including electrostatic conveyance of charged toner | Yohichiroh Miyaguchi, Takeshi Takemoto, Hiroyuki Okamoto, Chikara Imai, Katsuo Sakai +2 more | 2003-07-22 |
| 6597885 | Image forming apparatus having a developing device with a magnet brush | Nobutaka Takeuchi, Hisashi Shoji, Kei Yasutomi, Takeyoshi Sekine, Osamu Ariizumi | 2003-07-22 |
| 6505014 | Image forming apparatus and an image forming process unit | Katsuhiro Aoki, Hisashi Shoji, Hajime Oyama, Noriyoshi Tarumi, Takashi Hodoshima +1 more | 2003-01-07 |
| 6456806 | Developing method, device, and image forming apparatus with magnet brush | Hisashi Shoji | 2002-09-24 |
| 6449452 | Method and apparatus for image developing capable of using developer in a magnet brush form | — | 2002-09-10 |
| 6442364 | Image forming apparatus having a developer carrier capable of preventing toner adhesion | Nobutaka Takeuchi, Takeyoshi Sekine, Nobuo Takami, Osamu Ariizumi | 2002-08-27 |
| 6385423 | Image forming apparatus and developing device therefor capable of increasing image density of a low contrast image | — | 2002-05-07 |
| 6366751 | Image forming apparatus including preselected range between charge injection layer and voltage potential | Masahiko Shakuto, Hidetoshi Yano, Takahiko Tokumasu, Hiroshi Ikuno, Kei Yasutomi +3 more | 2002-04-02 |