Issued Patents 2004
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6829449 | Image forming apparatus with transfer bias inverting function | Hiroyoshi Matsumoto, Tsuneaki Kawanishi, Hisao Okada, Natsuki Kuribayashi, Masayoshi Ishii +1 more | 2004-12-07 |
| 6813462 | Electro-photographic developing unit | Tsuneaki Kawanishi, Masayoshi Ishii, Hisao Okada, Hiroyoshi Matsumoto, Keisuke Kubota +1 more | 2004-11-02 |
| 6792235 | Electrophotographic apparatus including transferring device | Keisuke Kubota, Masayoshi Ishii, Hideki Ando | 2004-09-14 |
| 6760553 | Electrophotographic cluster printing system with controlled image quality | Keisuke Kubota, Masayoshi Ishii, Shintaro Yamada | 2004-07-06 |
| 6754464 | Full-color recorder using potential split developing process | Yasuo Kikuchi, Akira Terakado, Kazuo Sakaki, Shinya Kobayashi, Akira Arimoto | 2004-06-22 |
| 6738586 | Print control method of electrophotograph and image formation apparatus with potential sensor using the method | Keisuke Kubota, Hiroyuki Mabuchi, Masayoshi Ishii, Shinichi Akatsu | 2004-05-18 |
| 6686943 | Control method of an electrophotographic record apparatus and image formation apparatus including controlling developing bias and photoconductor surface potential | Masayoshi Ishii, Keisuke Kubota, Shintaro Yamada | 2004-02-03 |
| 6684036 | Image forming apparatus | Keisuke Kubota, Hiroyuki Mabuchi, Masayoshi Ishii, Shinichi Akatsu | 2004-01-27 |