Issued Patents 2011
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8086117 | Image forming apparatus and developer replenishing method | Takuzi Yoneda, Keiko Matsumoto, Yuki Oshikawa | 2011-12-27 |
| 8086146 | Image forming method and apparatus for effectively supplying developer | Kiyonori Tsuda, Hiroyuki Okaji | 2011-12-27 |
| 8014704 | Developing agent storage device and image forming apparatus having same in which the chargeability level of the toner, storage device, and carrier have a specific relationship | Keiko Matsumoto, Emi Kita, Satoru Miyamoto, Junichi Terai | 2011-09-06 |
| 7991330 | Developing unit including developer conveyance system having supply path, recovery path, and agitation path, process cartridge including developing unit, and image forming apparatus including process cartridge | Yuki Oshikawa, Koichi Kato, Hiroyuki Okaji, Kiyonori Tsuda, Emi Kita +1 more | 2011-08-02 |
| 7962071 | Developing device and image forming apparatus using same | Kiyonori Tsuda, Koichi Kato, Yuki Oshikawa, Yasufumi Takahashi, Eriko Maruyama +5 more | 2011-06-14 |
| 7925190 | Developer supply device and image forming apparatus comprising same | Keiko Matsumoto, Hiroyuki Okaji | 2011-04-12 |