Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7352977 | Toner level detection method and image forming apparatus employing such toner level detection method | Nobuhiko Nakano | 2008-04-01 |
| 6512896 | Image forming apparatus with detachable mounting process cartridge | Kouichi Takenouchi, Hiroo Naoi, Syouichi Fujita, Hirofumi Sakita, Hideji Saiko | 2003-01-28 |
| 6226490 | Toner replenishing apparatus and image forming apparatus equipped with same | Syouichi Fujita, Itaru Kawabata, Hideji Saiko, Hirofumi Sakita, Kouichi Takenouchi +2 more | 2001-05-01 |
| 6157807 | Cleaning device with electrically biased conveying members for collecting, separating and reusing developer | Kouichi Takenouchi, Kouji Shinkawa, Hiroo Naoi, Syouichi Fujita | 2000-12-05 |
| 6070035 | Image forming apparatus having developer supply device | Syouichi Fujita, Eiji Sato, Hirofumi Sakita, Itaru Kawabata, Kouichi Takenouchi | 2000-05-30 |
| 5923922 | Image forming apparatus with flying toner detecting device | Toshihisa Ishida, Katuaki Sumida, Kanshiro Okamoto, Jitsuo Masuda, Katsushi Inoue +3 more | 1999-07-13 |
| 5842089 | Development apparatus for developing electrostatic latent image held by holder by using nonmagnetic one component developer | Hisashi Kunihiro, Kouji Shinkawa, Yukihisa Imaue, Itaru Kawabata | 1998-11-24 |
| 5839018 | Toner density control for an image forming apparatus | Toshiaki Ino, Kanshiro Okamoto, Hideji Saiko, Toshihisa Ishida, Katsuaki Sumida +8 more | 1998-11-17 |
| 5310423 | Developing unit having capability of efficiently exchanging developing powder | Toyoka Aimoto | 1994-05-10 |
| 5243389 | Toner hopper having stirring and feeding rollers | Naoyuki Yamane, Keiji Kato, Katsuzo Uchida, Miki Demoto, Hisashi Kunihiro +4 more | 1993-09-07 |
| 5216470 | Method of determining the density of toner | Masatoshi Kaneshige, Hisashi Kunihiro | 1993-06-01 |
| 5009187 | Developing device with shutter | Masatoshi Kaneshige | 1991-04-23 |
| 4982691 | Developing device for electrophotographic apparatus having magnet rollers | Masatoshi Kaneshige, Toyoka Aimoto | 1991-01-08 |
| 4955316 | Developing device | Masatoshi Kaneshige, Toyoka Aimoto | 1990-09-11 |
| 4914481 | Developing apparatus | Tamio Yoshikai, Masatoshi Kaneshige, Hideaki Hagihara | 1990-04-03 |
| 4891675 | Developer density detection device | — | 1990-01-02 |
| 4851879 | Transfer device in electrophotographic copying machine | Yukihisa Imaue, Kyoichi Takada | 1989-07-25 |