Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10620578 | Image forming apparatus for correcting density unevenness | Kohhei Sakurada, Katsuya Akiba, Yasuhito Shinchi, Shinichi Akatsu, Hiroki Yamamura | 2020-04-14 |
| 10061226 | Image forming apparatus and image forming method | Kazuaki Kamihara, Yuuichiroh Uematsu, Tomohide Takenaka, Keita Sone, Keita Gotoh +5 more | 2018-08-28 |
| 9989876 | Image forming apparatus and method for calculating a toner degradation rate | Mutsuki Morinaga, Tadashi Kasai, Jun Hitosugi, Takamasa Ozeki, Makoto Yasuda +6 more | 2018-06-05 |
| 9565319 | Image forming apparatus having an optical sensor for converting a toner adhesion amount and image forming method | Shinichi Akatsu, Akira Yoshida, Keita Gotoh, Yuuichiroh Uematsu | 2017-02-07 |
| 9535376 | Image forming apparatus that switches transfer bias based on detected environment condition | Keita Sone, Shinichi Akatsu, Tomohide Takenaka, Akira Yoshida, Keita Gotoh +1 more | 2017-01-03 |
| 9436135 | Toner pattern density correction in an image forming apparatus | Keita Sone, Nobutaka Takeuchi, Shinichi Akatsu, Tomohide Takenaka, Kohta Fujimori +4 more | 2016-09-06 |
| 9229361 | Developer conveyance device, image forming apparatus, and developer conveyance method | Junichi Matsumoto, Kiyonori Tsuda, Nobuo Takami, Yutaka Takahashi, Kentaro Mikuniya +1 more | 2016-01-05 |
| 9152896 | Image forming apparatus and image forming method | Satoshi Kaneko, Shuji Hirai, Shinichi Akatsu, Shingo Suzuki, Keita Gotoh +2 more | 2015-10-06 |
| 9141059 | Image forming apparatus | Shuji Hirai, Shinichi Akatsu, Shingo Suzuki, Satoshi Kaneko, Keita Gotoh +1 more | 2015-09-22 |
| 9128402 | Image forming apparatus capable of effectively preventing image density fluctuation | Yuuichiroh Uematsu, Shinichi Akatsu, Shuji Hirai, Shingo Suzuki, Satoshi Kaneko +1 more | 2015-09-08 |
| 8983320 | Image forming apparatus | Shingo Suzuki, Satoshi Kaneko, Shuji Hirai, Shinichi Akatsu, Keita Gotoh +1 more | 2015-03-17 |
| 8879963 | Toner supplying device and image forming apparatus using same | Yushi Hirayama, Eichi Koizumi, Hitoshi Ishibashi | 2014-11-04 |
| 8693902 | Image forming apparatus | Naoto Watanabe | 2014-04-08 |
| 8311422 | Image forming apparatus having a first and second toner containers and a developing unit | Yushi Hirayama, Hitoshi Ishibashi | 2012-11-13 |
| 8233813 | Image forming apparatus and image-density control method | Akira Yoshida, Shin Hasegawa, Hitoshi Ishibashi, Yoshiaki Miyashita, Kohta Fujimori +4 more | 2012-07-31 |
| 8145100 | Process cartridge including developing unit and incorporated in image forming apparatus | Yushi Hirayama, Shinji Kato, Takeroh Kurenuma, Keiichi Yoshida, Shin Hasegawa +6 more | 2012-03-27 |
| 8045874 | Image forming apparatus and image density control method | Akira Yoshida, Shin Hasegawa, Hitoshi Ishibashi, Yoshiaki Miyashita, Kohta Fujimori +3 more | 2011-10-25 |
| 7813662 | Transfer unit and image forming apparatus using the unit | Ken Yoshida | 2010-10-12 |