Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6987939 | Image forming apparatus with two cleaning electric fields for transferring developer from a developer charging device onto an image bearing member | Yasuo Yoda, Kenichi Iida | 2006-01-17 |
| 6980749 | Image forming apparatus with control feature based on transfer material discrimination | Yasuo Yoda, Yoichiro Maebashi, Hiroshi Kawaguchi, Kenichi Iida, Yuki Nishizawa | 2005-12-27 |
| 6956594 | Image forming apparatus including two image bearing members and featuring a variable dot image | Kenichi Iida, Yasuo Yoda | 2005-10-18 |
| 6947695 | Image forming apparatus including two image forming members and featuring a dot-shaped image | Kenichi Iida, Yasuo Yoda | 2005-09-20 |
| 6084208 | Image heating device which prevents temperature rise in non-paper feeding portion, and heater | Koichi Okuda, Takashi Shibuya | 2000-07-04 |
| 5801360 | Image fixing apparatus | Hiroyuki Oba, Yasumasa Ohtsuka, Kouichi Okuda, Akira Hayakawa, Daizo Fukuzawa +1 more | 1998-09-01 |
| 5646717 | Image forming apparatus having charging member | Koichi Hiroshima, Masahiro Goto, Yoji Serizawa, Makoto Takeuchi | 1997-07-08 |
| 5621510 | Image heating apparatus with driving roller having low thermal expansion coefficient outer layer | Kouichi Okuda, Akira Hayakawa, Takashi Shibuya, Hiroyuki Oba | 1997-04-15 |
| 5459558 | Charging device, image forming apparatus with same and a process unit detachably mountable to the image forming apparatus | — | 1995-10-17 |
| 5285245 | Electrostatic transfer type image forming apparatus with recording material guide for changing direction of recording material separation from image transfer position | Masahiro Goto, Takahiro Inoue, Koichi Hiroshima, Koichi Suwa, Manabu Takano | 1994-02-08 |
| 5253024 | Fixing apparatus with rectifier element | Koichi Okuda, Yoji Tomoyuki, Toshio Miyamoto, Junji Araya, Yukihiro Ohzeki +7 more | 1993-10-12 |
| 5202729 | Developing apparatus having a coated developing roller | Toshio Miyamoto, Yasushi Sato, Akihiko Takeuchi, Hiroshi Sasame, Katsuhiko Nishimura +4 more | 1993-04-13 |
| 5185496 | Electrostatic latent image device having a coating layer provided on a developer carrying member | Katsuhiko Nishimura, Keiji Okano, Toshio Miyamoto | 1993-02-09 |
| 5179397 | Image forming apparatus with constant voltage and constant current control | Yukihiro Ohzeki, Koichi Hiroshima, Junji Araya, Yasushi Sato, Kimio Nakahata +5 more | 1993-01-12 |
| 5177537 | Developing apparatus with elastic regulating member urged to a developer carrying member | Keiji Okano, Hiroto Hasegawa, Toshio Miyamoto, Katsuhiko Nishimura | 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, Kimio Nakahata +4 more | 1992-10-27 |
| 5151736 | Image forming apparatus with controlled transfer voltage | Yukihiro Ohzeki, Junji Araya, Yasushi Sato, Kimio Nakahata | 1992-09-29 |
| 5144368 | Charging device and image forming apparatus having same | Yukihiro Ohzeki, Junji Araya | 1992-09-01 |
| 5034777 | Transferring device having charging device with double oxide and voltage control | Yukihiro Ohzeki, Koichi Hiroshima, Yoshiaki Nishimura, Jun Murata, Junji Araya +2 more | 1991-07-23 |