Issued Patents All Time
Showing 26–41 of 41 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6763208 | Photoreceptor regenerating apparatus and image forming apparatus using regenerated photoreceptor and method of regenerating photoreceptor | Shinji Nagatsuna, Takeshi Saitou, Kenichi Shishido, Masaki Narita | 2004-07-13 |
| 6560414 | Reusable photoreceptor and image forming apparatus using the reusable photoreceptor and method of reusing photoreceptor | Takeshi Saitou, Masaki Narita, Shinji Nagatsuna, Kenichi Shishido | 2003-05-06 |
| 6463237 | Image forming apparatus and charge roller therefor | Akiyoshi Tanaka | 2002-10-08 |
| 6336013 | Image forming apparatus and process cartridge having magnet to prevent toner scattering | Hiroshi Yoshinaga | 2002-01-01 |
| 6256465 | Image forming apparatus and image forming unit therefor | Hiroshi Yoshinaga, Moriaki Ogawa | 2001-07-03 |
| 6101351 | Image forming apparatus having a shutter mechanism for protecting an image bearing member | Hiroshi Yoshinaga | 2000-08-08 |
| 6097914 | Image bearing member and method of manufacturing the member and image forming apparatus using the member | Masaru Tanaka, Sadao Takahashi, Takerou Kurenuma, Wataru Ohtani, Itaru Ohtsuka | 2000-08-01 |
| 6055394 | Reliable cover switch employing machine | Hiroshi Yoshinaga | 2000-04-25 |
| 6055388 | Image forming apparatus and method for obtaining appropriate toner density | Shigeru Watanabe, Masaru Tanaka, Haruji Mizuishi, Kenzou Tatsumi, Toshitaka Yamaguchi +3 more | 2000-04-25 |
| D418862 | Toner cartridge | Moriaki Ogawa, Takaaki Tawada, Akiyoshi Tanaka | 2000-01-11 |
| 6006050 | Image forming method and apparatus for controlling amount of supplied toner or agitating time | Shigeru Watanabe, Masaru Tanaka, Haruji Mizuishi, Toshitaka Yamaguchi, Kenzou Tatsumi +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, Haruji Mizuishi, Hiroshi Yoshinaga, Kenzo Tatsumi +3 more | 1999-06-22 |
| 5887224 | Image forming device with improved mixing of circulated developer with replensihed toner | Haruji Mizuishi, Masaru Tanaka, Shigeru Watanabe, Kenzo Tatsumi, Toshitaka Yamaguchi +3 more | 1999-03-23 |
| 5815767 | Image forming apparatus | Akio Kutsuwada, Masaru Tanaka, Mitsuru Sato, Toshitaka Yamaguchi, Kenzou Tatsumi | 1998-09-29 |
| 5678125 | Image forming apparatus | Akio Kutsuwada, Masaru Tanaka, Mitsuru Sato, Toshitaka Yamaguchi, Kenzou Tatsumi | 1997-10-14 |
| 5532795 | Method of and system for cleaning roller members | Kenzo Tatsumi, Masaru Tanaka | 1996-07-02 |