Issued Patents All Time
Showing 26–40 of 40 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7672602 | Developing unit and image forming apparatus which forces consumption of toner | Kazumi Kobayashi, Shinji Kobayashi, Fukutoshi Uchida, Takashi Enami, Ryohta Morimoto +8 more | 2010-03-02 |
| 7646996 | Image forming apparatus and control method thereof | — | 2010-01-12 |
| 7616909 | Image forming apparatus and image forming method | Shinji Kato, Shin Hasegawa, Hitoshi Ishibashi, Kohta Fujimori, Nobutaka Takeuchi +8 more | 2009-11-10 |
| 7548704 | Image forming apparatus effectively conducting a process control | Shin Hasegawa, Shinji Kato, Hitoshi Ishibashi, Kohta Fujimori, Naoto Watanabe +8 more | 2009-06-16 |
| 7499664 | Image processing apparatus, process cartridge, and cleaning system with residual toner retaining unit | Yasushi Koichi, Koji Suzuki, Shigekazu Enoki, Kumiko Hatakeyama | 2009-03-03 |
| 7493058 | Image forming apparatus and toner concentration controlling method | Nobutaka Takeuchi, Shin Hasegawa, Kohta Fujimori, Kayoko Tanaka, Yushi Hirayama +8 more | 2009-02-17 |
| 7315711 | Image forming apparatus, process cartridge and cleaningless system | Masahide Yamashita, Koji Suzuki, Yasushi Koichi, Shigekazu Enoki, Kumiko Hatakeyama +3 more | 2008-01-01 |
| 7218879 | Image forming apparatus controlling polarity of residual toner and process cartridge for use in the same | Shigekazu Enoki, Koji Suzuki, Yasushi Koichi, Kumiko Hatakeyama, Koichi Kato +3 more | 2007-05-15 |
| 7020421 | Magnetic carrier, two-component developer, development method, development device and image forming apparatus of electrophotography | Shigekazu Enoki, Hisao Kurosu, Shinichi Namekata | 2006-03-28 |
| 6901233 | Image forming apparatus | Katsuhiro Aoki, Tsukuru Kai, Hajime Oyama, Hisashi Shoji, Takashi Hodoshima +1 more | 2005-05-31 |
| 6778805 | Image forming apparatus having a developing device with a magnet brush | Tsukuru Kai, Nobutaka Takeuchi, Hisashi Shoji, Kei Yasutomi, Takeyoshi Sekine | 2004-08-17 |
| 6728504 | Developing device using a magnet brush and image forming apparatus including the same | Takeyoshi Sekine, Nobuo Takami | 2004-04-27 |
| 6721516 | Image forming apparatus | Katsuhiro Aoki, Tsukuru Kai, Hajime Oyama, Hisashi Shoji, Takashi Hodoshima +1 more | 2004-04-13 |
| 6597885 | Image forming apparatus having a developing device with a magnet brush | Tsukuru Kai, Nobutaka Takeuchi, Hisashi Shoji, Kei Yasutomi, Takeyoshi Sekine | 2003-07-22 |
| 6442364 | Image forming apparatus having a developer carrier capable of preventing toner adhesion | Tsukuru Kai, Nobutaka Takeuchi, Takeyoshi Sekine, Nobuo Takami | 2002-08-27 |