Issued Patents All Time
Showing 26–31 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6006050 | Image forming method and apparatus for controlling amount of supplied toner or agitating time | Shigeru Watanabe, Masaru Tanaka, Toshitaka Yamaguchi, Kenzou Tatsumi, Hiroshi Yoshinaga +3 more | 1999-12-21 |
| 5915143 | Image forming apparatus and method for automatically adjusting toner density in response to humidity variations | Shigeru Watanabe, Masaru Tanaka, Hiroshi Yoshinaga, Kenzo Tatsumi, Toshitaka Yamaguchi +3 more | 1999-06-22 |
| 5887224 | Image forming device with improved mixing of circulated developer with replensihed toner | Masaru Tanaka, Shigeru Watanabe, Kenzo Tatsumi, Toshitaka Yamaguchi, Takeo Suda +3 more | 1999-03-23 |
| 5873019 | Image forming apparatus having roller cleaning system and method | — | 1999-02-16 |
| 5857132 | Apparatus and method for cleaning a transfer device of an image forming apparatus | Hisashi Fuzisaki, Mayumi Yoshida, Kenji Karashima, Yasushi Akiba | 1999-01-05 |
| 5812919 | Image transferring device for an image forming apparatus | Satoshi Takano, Itaru Matsuda, Yuko Hayama, Hirokazu Ishii, Akio Kutsuwada +1 more | 1998-09-22 |