Issued Patents All Time
Showing 1–25 of 60 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9188924 | Image forming apparatus and image forming method | Satoshi Kaneko, Shinji Kato, Shuji Hirai, Jun Yamane, Koichi Kudo +1 more | 2015-11-17 |
| 9182720 | Image forming apparatus capable of reducing image density irregularity | Satoshi Kaneko, Shinji Kato, Shuji Hirai, Jun Yamane, Koichi Kudo +1 more | 2015-11-10 |
| 9152896 | Image forming apparatus and image forming method | Satoshi Kaneko, Shuji Hirai, Shinichi Akatsu, Shingo Suzuki, Tetsuya Muto +2 more | 2015-10-06 |
| 8977148 | Image forming apparatus and image forming method | Satoshi Kaneko, Jun Yamane, Koichi Kudo, Shinji Kato, Shuji Hirai +1 more | 2015-03-10 |
| 8879963 | Toner supplying device and image forming apparatus using same | Yushi Hirayama, Eichi Koizumi, Tetsuya Muto | 2014-11-04 |
| 8867937 | Diffuse reflection output conversion method, attached powder amount conversion method, and image forming apparatus | Hideo Muroi, Yushi Hirayama, Shuji Hirai | 2014-10-21 |
| 8818244 | Developing device and image forming apparatus | Yushi Hirayama, Shuji Hirai, Satoshi Kaneko, Hideo Muroi | 2014-08-26 |
| 8811846 | Optical sensor with positioning reference surface and image forming apparatus incorporating optical sensor | Akira Yoshida, Yoshiaki Miyashita, Kohta Fujimori, Nobutaka Takeuchi, Kayoko Tanaka | 2014-08-19 |
| 8311422 | Image forming apparatus having a first and second toner containers and a developing unit | Yushi Hirayama, Tetsuya Muto | 2012-11-13 |
| 8279491 | Color image formation apparatus for forming a reference pattern with a plurality of lines having a black color as reference color and for correcting misalignment with respect to the reference pattern | — | 2012-10-02 |
| 8233813 | Image forming apparatus and image-density control method | Akira Yoshida, Shin Hasegawa, Yoshiaki Miyashita, Kohta Fujimori, Nobutaka Takeuchi +4 more | 2012-07-31 |
| 8175471 | Image forming apparatus and image density control method | Kentaroh Tomita, Nobutaka Takeuchi, Shin Hasegawa, Shinji Kato, Kohta Fujimori +2 more | 2012-05-08 |
| 8155543 | Image forming apparatus capable of reducing a lengthy duration of an adjustment control | Osamu Ariizumi, Shinji Kobayashi, Kazumi Kobayashi, Fukutoshi Uchida, Takashi Enami +8 more | 2012-04-10 |
| 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 |
| 8103181 | Image forming apparatus and method of adjusting charge bias | Kohta Fujimori, Shin Hasegawa, Yushi Hirayama, Nobutaka Takeuchi, Shinji Kato +5 more | 2012-01-24 |
| 8099006 | Image forming apparatus and image quality correction method used therein | Kohta Fujimori, Shin Hasegawa, Nobutaka Takeuchi, Kayoko Tanaka, Yushi Hirayama | 2012-01-17 |
| 8095025 | Image forming apparatus capable of efficient toner concentration control | Shin Hasegawa, Kohta Fujimori, Nobutaka Takeuchi, Kayoko Tanaka, Yushi Hirayama +2 more | 2012-01-10 |
| 8045874 | Image forming apparatus and image density control method | Akira Yoshida, Shin Hasegawa, Yoshiaki Miyashita, Kohta Fujimori, Nobutaka Takeuchi +3 more | 2011-10-25 |
| 8027605 | Image forming apparatus and image density control method | Nobutaka Takeuchi, Shin Hasegawa, Shuji Hirai, Kohta Fujimori, Kayoko Tanaka +2 more | 2011-09-27 |
| 8009997 | Toner replenishment determination device of an image forming apparatus | Osamu Ariizumi, Kazumi Kobayashi, Shinji Kobayashi, Fukutoshi Uchida, Takashi Enami +8 more | 2011-08-30 |
| 7962071 | Developing device and image forming apparatus using same | Kiyonori Tsuda, Koichi Kato, Yuki Oshikawa, Yasufumi Takahashi, Eriko Maruyama +5 more | 2011-06-14 |
| 7929873 | Image forming apparatus and image density control method | Nobutaka Takeuchi, Shin Hasegawa, Shuji Hirai, Kohta Fujimori, Kayoko Tanaka +4 more | 2011-04-19 |
| 7903986 | Reuse method and a reusable device for an image forming apparatus having a first process linear velocity and a second image processing apparatus having a second process linear velocity | Kayoko Tanaka, Shin Hasegawa, Shuji Hirai, Kohta Fujimori, Nobutaka Takeuchi +2 more | 2011-03-08 |
| 7885556 | Image forming apparatus for correcting a toner density target value | Kohta Fujimori, Shin Hasegawa, Nobutaka Takeuchi, Yushi Hirayama, Naoto Watanabe +8 more | 2011-02-08 |
| 7881629 | Image forming apparatus and image density control method | Nobutaka Takeuchi, Kohta Fujimori, Kayoko Tanaka, Yushi Hirayama, Naoto Watanabe | 2011-02-01 |