Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8743434 | Image forming apparatus increasing combined-color reproduction accuracy and stabilizing toner disposition amount | — | 2014-06-03 |
| 8295737 | Developing device and image forming apparatus using same | Kiyonori Tsuda, Junichi Terai, Keiko Matsumoto, Kohichi Utsunomiya | 2012-10-23 |
| 8265527 | Developing unit, image forming apparatus incorporating same, and method of controlling amounts of toner | Emiko Shiraishi, Takehide Mizutani, Takayuki Tamaki, Masumi Sato | 2012-09-11 |
| 8175471 | Image forming apparatus and image density control method | Nobutaka Takeuchi, Hitoshi Ishibashi, Shin Hasegawa, Shinji Kato, Kohta Fujimori +2 more | 2012-05-08 |
| 8145101 | Developing device, image forming apparatus and process cartridge in which a shock is applied intermittently to the discharged developer | Junichi Terai, Koichi Kato, Koichi Sakata, Maiko Koeda, Kiyonori Tsuda | 2012-03-27 |
| 8103181 | Image forming apparatus and method of adjusting charge bias | Hitoshi Ishibashi, Kohta Fujimori, Shin Hasegawa, Yushi Hirayama, Nobutaka Takeuchi +5 more | 2012-01-24 |
| 8095025 | Image forming apparatus capable of efficient toner concentration control | Hitoshi Ishibashi, Shin Hasegawa, Kohta Fujimori, Nobutaka Takeuchi, Kayoko Tanaka +2 more | 2012-01-10 |
| 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, Hitoshi Ishibashi, Shuji Hirai, Kohta Fujimori +4 more | 2011-04-19 |
| 7778560 | Image forming apparatus and method of adjusting charge bias | Hitoshi Ishibashi, Kohta Fujimori, Shin Hasegawa, Yushi Hirayama, Nobutaka Takeuchi +5 more | 2010-08-17 |