Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8837968 | Image formation apparatus, driving control method, and computer program product | Toshiyuki Andoh, Takashi Hashimoto, Masahiko Kato | 2014-09-16 |
| 8538310 | Image transfer apparatus, image fixing apparatus, and registration apparatus which prevent a load torque variation upon entry or exit of a sheet into a nipping portion | Hiromichi Matsuda, Toshiyuki Andoh, Takashi Hashimoto, Tatsuhiko Oikawa, Hidetaka Noguchi +2 more | 2013-09-17 |
| 8422037 | Image forming apparatus | Toshiyuki Andoh, Takashi Hashimoto, Hidetaka Noguchi, Seiji Hoshino, Tatsuhiko Oikawa +1 more | 2013-04-16 |
| 8412081 | Belt meandering preventing device and image forming apparatus including the same | Koichi Kudo, Yuichi Hirose | 2013-04-02 |
| 8385762 | Transfer device and image forming apparatus | Hidetaka Noguchi, Toshiyuki Andoh, Seiji Hoshino, Takashi Hashimoto | 2013-02-26 |
| 8364071 | Image forming apparatus and sheet conveying device having upstream and downstream rollers | Hidetaka Noguchi, Toshiyuki Andoh, Seiji Hoshino, Tatsuhiko Oikawa, Hiromichi Matsuda +2 more | 2013-01-29 |
| 8254811 | Image forming apparatus for controlling movement of a moving member | Toshiyuki Andoh, Takashi Hashimoto, Hidetaka Noguchi, Seiji Hoshino, Tatsuhiko Oikawa +1 more | 2012-08-28 |
| 8165498 | Image forming device | Seiji Hoshino, Toshiyuki Andoh, Takashi Hashimoto, Hidetaka Noguchi, Tatsuhiko Oikawa | 2012-04-24 |
| 8131173 | Driving apparatus and image forming apparatus | Hidetaka Noguchi, Toshiyuki Andoh, Seiji Hoshino, Tatsuhiko Oikawa, Takashi Hashimoto | 2012-03-06 |
| 8126387 | Sheet conveying device and image forming apparatus | Hidetaka Noguchi, Toshiyuki Andoh, Tatsuhiko Oikawa, Seiji Hoshino, Hiromichi Matsuda +2 more | 2012-02-28 |
| 8087670 | Sheet conveying device and image forming apparatus | Hidetaka Noguchi, Toshiyuki Andoh, Seiji Hoshino, Takashi Hashimoto, Tatsuhiko Oikawa | 2012-01-03 |
| 8010027 | Image forming apparatus | Toshiyuki Andoh, Seiji Hoshino, Takashi Hashimoto, Hidetaka Noguchi | 2011-08-30 |
| 7971878 | Sheet conveying device and image forming apparatus | Takashi Hashimoto, Toshiyuki Andoh, Seiji Hoshino, Hidetaka Noguchi, Tatsuhiko Oikawa | 2011-07-05 |
| 6901233 | Image forming apparatus | Katsuhiro Aoki, Tsukuru Kai, Hajime Oyama, Osamu Ariizumi, Hisashi Shoji +1 more | 2005-05-31 |
| 6856780 | Method and device for developing a latent image and image forming apparatus using the same | Ichiro Kadota, Nobutaka Takeuchi, Teiichiro Takano | 2005-02-15 |
| 6721516 | Image forming apparatus | Katsuhiro Aoki, Tsukuru Kai, Hajime Oyama, Osamu Ariizumi, Hisashi Shoji +1 more | 2004-04-13 |
| 6658227 | Development method apparatus, image formation and process cartridge for suppressing variation in toner charge | Hajime Oyama, Tsukuru Kai, Katsuhiro Aoki, Yasuo Miyoshi, Ichiro Kadota | 2003-12-02 |
| 6608984 | Image forming method and apparatus using developer carrier pressed into engagement with image carrier | Junichi Matsumoto, Katsuhiro Aoki | 2003-08-19 |
| 6526248 | Toner support member and developing device prevented from charging toner by friction | Katsuhiro Aoki, Hajime Oyama | 2003-02-25 |
| 6505014 | Image forming apparatus and an image forming process unit | Katsuhiro Aoki, Hisashi Shoji, Tsukuru Kai, Hajime Oyama, Noriyoshi Tarumi +1 more | 2003-01-07 |
| 6463244 | Image forming apparatus, developing device therefor and image forming process unit | Katsuhiro Aoki, Hajime Oyama | 2002-10-08 |
| 6295437 | Apparatus and method for forming an image using a developing device capable of obtaining a high quality image | Katsuhiro Aoki, Jun Matsumoto | 2001-09-25 |
| 6163669 | Image forming apparatus | Katsuhiro Aoki, Junichi Matsumoto, Hiroyuki Matsushiro | 2000-12-19 |
| 6112046 | Image forming apparatus having recycling of residual toner | Koji Suzuki, Hiroshi Saitoh, Hiroshi Ishii, Ichirou Komuro, Toshihiro Sugiyama +2 more | 2000-08-29 |
| 5987298 | Image forming apparatus including a toner recycling mechanism | Satoshi Muramatsu, Nobuo Kasahara | 1999-11-16 |