Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4866481 | Image forming apparatus having a plurality of developers and a detection and control arrangement for detecting the density of a formed image and a controller for controlling the density of the image | Takanobu Yamada | 1989-09-12 |
| 4862221 | Cleaning device | Tomohisa Kanada | 1989-08-29 |
| 4847658 | Image forming apparatus and image forming method employed therefor | Kaoru Takebe, Naoki Toyoshi, Hiroshi Okamoto, Mineyuki Sako | 1989-07-11 |
| 4845524 | Image forming method | Hiroshi Okamoto, Naoki Toyoshi, Kaoru Takebe, Taisuke Nagao | 1989-07-04 |