Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10310433 | Image forming apparatus that controls a temperature of at least one of a rotating member based on a wearing amount of the rotating member and a pressing member based on a hardness change amount of the pressing member | Eiji Uekawa | 2019-06-04 |
| 7280798 | Image forming apparatus with conveying device urging a recording material toward a charge eliminating member | — | 2007-10-09 |
| 6618576 | Image forming apparatus | Kenji Kanari, Yasuhiro Nakata | 2003-09-09 |
| 6587662 | Image fixing apparatus having separating claw | Yasunari Kobaru, Takashi Narahara, Tomoyuki Makihira | 2003-07-01 |
| 6496661 | Sheet attachment detecting apparatus, fixing apparatus and image forming apparatus | Masao Ando, Tomohiro Nakamori, Yasunari Kobaru | 2002-12-17 |
| 6493534 | Sheet conveying apparatus and image forming apparatus | Kei Sawanaka, Masao Ando, Tomio Noguchi, Minoru Matsuguma, Masaru Shimura +1 more | 2002-12-10 |
| 6438348 | Fixing apparatus with first and second heating rotation members having a potential difference | Yasunari Kobaru, Hiroshi Kataoka, Takashi Narahara, Tomoyuki Makihira | 2002-08-20 |
| 6347211 | Fixing apparatus preventing leakage of electric current from inner surface of fixing roller | Hideo Nanataki, Koichi Tanigawa, Yasumasa Ohtsuka, Akihiko Takeuchi, Hiroto Hasegawa | 2002-02-12 |
| 6266495 | Image forming apparatus using transfer roller having low resistance unevenness in circumferential direction | Masaru Shimura | 2001-07-24 |
| 6173135 | Image forming apparatus with a bias control feature | Masaru Shimura | 2001-01-09 |
| 6052549 | Charging roller, and process cartridge and image-forming apparatus employing the roller | Masaru Shimura, Masaharu Ohkubo | 2000-04-18 |
| 6005594 | Fixing apparatus having a fixing roller with a non-adhesive surface layer | Hideo Nanataki, Koichi Tanigawa, Yasumasa Ohtsuka, Akihiko Takeuchi, Hiroto Hasegawa | 1999-12-21 |
| 5926683 | Image forming apparatus with two-potential-level electricity removing member | Junichi Kimizuka, Tomohiro Nakamori | 1999-07-20 |
| 5682576 | Fixing device | Hiroaki Sakai, Masaharu Ohkubo, Norio Hashimoto, Hiroto Hasegawa, Kazuaki Ono +2 more | 1997-10-28 |
| 5253022 | Image forming apparatus | Akihiko Takeuchi, Hiroto Hasegawa, Koichi Tanigawa, Yasumasa Ohtsuka, Hiroki Kisu | 1993-10-12 |
| 5235386 | Charging device having charging member, process cartridge and image forming apparatus | Hideyuki Yano, Koichi Tanigawa, Akihiko Takeuchi, Hiroshi Sasame, Yasumasa Ohtsuka +3 more | 1993-08-10 |
| 5223900 | Transfer roller with a resistance determined in accordance with its peripheral speed | Koichi Tanigawa, Akihiko Takeuchi, Koichi Hiroshima | 1993-06-29 |
| 5179397 | Image forming apparatus with constant voltage and constant current control | Yukihiro Ohzeki, Tatsunori Ishiyama, Koichi Hiroshima, Junji Araya, Yasushi Sato +5 more | 1993-01-12 |
| 5177549 | Image forming apparatus supplied with controllable bias voltage | Yasumasa Ohtsuka, Koichi Tanigawa, Akihiko Takeuchi, Hideo Nanataki, Hideyuki Yano +6 more | 1993-01-05 |
| 5159393 | Image forming apparatus having transfer device and image bearing member traveling at different speeds | Koichi Hiroshima, Yukihiro Ohzeki, Junji Araya, Yasushi Sato, Tatsunori Ishiyama +4 more | 1992-10-27 |
| 5157442 | Image forming apparatus | Koichi Tanigawa, Akihiko Takeuchi, Yasumasa Otsuka, Hiroto Hasegawa, Toshiyuki Yoshihara +1 more | 1992-10-20 |
| 5153654 | Image forming apparatus having transfer member for carrying transfer material | Koichi Tanigawa, Akihiko Takeuchi, Hiroshi Sasame, Yasumasa Ohtsuka, Hiroto Hasegawa +2 more | 1992-10-06 |