Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6671484 | Image forming apparatus having developing device with magnet roller with particular magnetic flux density | Tsukuru Kai | 2003-12-30 |
| 6658227 | Development method apparatus, image formation and process cartridge for suppressing variation in toner charge | Hajime Oyama, Tsukuru Kai, Katsuhiro Aoki, Takashi Hodoshima, Ichiro Kadota | 2003-12-02 |
| 6505014 | Image forming apparatus and an image forming process unit | Katsuhiro Aoki, Hisashi Shoji, Tsukuru Kai, Hajime Oyama, Noriyoshi Tarumi +1 more | 2003-01-07 |