Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6243544 | Method and apparatus for forming image | — | 2001-06-05 |
| 5486906 | Contact charger and image forming apparatus comprising the same | Sachiko Yoshida, Masato Ogasawara | 1996-01-23 |
| 5250992 | Image forming apparatus having sharp edged electrode | Yoshiyuki Fukuda | 1993-10-05 |
| 5075729 | Image forming apparatus having a developing and cleaning function using a controlled potential difference between surface and developing bias | Masao Hayashi, Katsuhide Sano | 1991-12-24 |
| 5023666 | Image forming apparatus using an image carrier with multiple layers | Takashi Shimazaki | 1991-06-11 |
| 4885221 | Electrophotography apparatus and electrophtographic process for developing positive image from positive or negative film | — | 1989-12-05 |
| 4717223 | Optical deflector | Takao Ishida | 1988-01-05 |