Issued Patents All Time
Showing 26–50 of 55 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5678130 | Developing apparatus including a control function for applied periodic developing bias field | Naoki Enomoto, Haruo Fujii, Motoi Katoh, Tatsuya Kobayashi, Masao Nakano +5 more | 1997-10-14 |
| 5666588 | Image forming apparatus for performing image density control | Akihiko Uchiyama, Haruo Fujii, Tatsuya Kobayashi, Tetsuya Kobayashi, Naoki Enomoto +3 more | 1997-09-09 |
| 5666597 | Image forming apparatus with delayed discharge by discharge means | Haruo Fujii, Tatsuhiko Hayakawa, Tatsuya Kobayashi, Tetsuya Kobayashi, Naoki Enomoto +3 more | 1997-09-09 |
| 5649268 | Charging device having a voltage with a superimposing component mode having a DC component and an oscillation component and a DC component mode | Youichirou Maebashi | 1997-07-15 |
| 5596393 | Image forming apparatus having charging member supplied with oscillating voltage | Tatsuya Kobayashi, Tetsuya Kobayashi, Toshiaki Miyashiro | 1997-01-21 |
| 5589924 | Electrophotographic image forming system | Hideyuki Yano, Koichi Tanigawa, Akihiko Takeuchi, Yasumasa Otsuka, Hiroto Hasegawa +2 more | 1996-12-31 |
| 5568242 | Electrophotographic photosensitive member, image forming apparatus and process unit having this electrophotographic photosensitive member | Hideki Anayama, Yoichiro Maebashi | 1996-10-22 |
| 5565995 | System for correcting a pulse-width-modulated signal in a recording apparatus | Hiromichi Yamada, Masaharu Ohkubo, Masaki Ojima, Takashi Kawana, Kaoru Seto +4 more | 1996-10-15 |
| 5548381 | Developing apparatus forming alternating electric field between image bearing member and toner carrying member | Yoshiro Saito, Haruo Fujii, Tatsuhiko Hayakawa, Tatsuya Kobayashi, Tetsuya Kobayashi +3 more | 1996-08-20 |
| 5543900 | Image forming apparatus which reduces toner fusion on an image bearing member | Youichirou Maebashi, Haruo Fujii, Hiroaki Kawakami, Tatsuya Kobayashi, Tetsuya Kobayashi +3 more | 1996-08-06 |
| 5539507 | Image forming apparatus having transfer material bearing member | Toshiaki Miyashiro, Tatsuya Kobayashi, Takehiko Suzuki | 1996-07-23 |
| 5508796 | Image forming apparatus with select relation among distances in recording material conveyance path | Takao Aoki, Haruo Fujii, Toshihiko Ochiai, Motoi Kato, Tatsuya Kobayashi +7 more | 1996-04-16 |
| 5488487 | Image forming apparatus, and modulating method therein | Masaki Ojima, Masaharu Ohkubo, Michio Itoh, Hiromichi Yamada, Tetsuo Saito +5 more | 1996-01-30 |
| 5463450 | Charging device for applying an oscillating voltage to a member to be charged | Takahiro Inoue, Masahiro Goto, Shinichi Tsukida, Manabu Takano | 1995-10-31 |
| 5463473 | Siphen for correcting a pulse-width modulated signal in a recording apparatus | Hiromichi Yamada, Masaharu Ohkubo, Masaki Ojima, Takashi Kawana, Kaoru Seto +4 more | 1995-10-31 |
| 5369478 | Developing apparatus | Tetsuya Kobayashi, Tatsuya Kobayashi, Naoki Enomoto, Akihiko Uchiyama, Yoshiro Saito | 1994-11-29 |
| 5321482 | Process cartridge and image forming apparatus including a lubricant provided on a cleaning member for cleaning an image bearing member | Hideyuki Yano, Koichi Tanigawa, Akihiko Takeuchi, Yasumasa Otsuka, Hiroto Hasegawa +2 more | 1994-06-14 |
| 5272506 | Contactable charging device for applying an oscillating voltage, process cartridge and image forming apparatus using the same | Masahiro Goto, Takahiro Inoue, Shinichi Tsukida, Manabu Takano | 1993-12-21 |
| 5235386 | Charging device having charging member, process cartridge and image forming apparatus | Hideyuki Yano, Koichi Tanigawa, Akihiko Takeuchi, Yasumasa Ohtsuka, Takayasu Yuminamochi +3 more | 1993-08-10 |
| 5217532 | Rotatable member for fixing apparatus and fixing apparatus using same | Masaaki Sakurai, Yasumi Yoshida, Isamu Sakane | 1993-06-08 |
| 5204034 | Method of producing a cleaning blade with a lubricant surface | Takeo Shoji, Hiroyuki Adachi, Shinichi Tsukida, Masahiro Watabe, Moriyuki Yanai | 1993-04-20 |
| 5202729 | Developing apparatus having a coated developing roller | Toshio Miyamoto, Yasushi Sato, Akihiko Takeuchi, Katsuhiko Nishimura, Hiroto Hasegawa +4 more | 1993-04-13 |
| 5177549 | Image forming apparatus supplied with controllable bias voltage | Yasumasa Ohtsuka, Koichi Tanigawa, Akihiko Takeuchi, Hideo Nanataki, Hideyuki Yano +6 more | 1993-01-05 |
| 5162858 | Cleaning blade and apparatus employing the same | Takeo Shoji, Hiroyuki Adachi, Masahiro Watabe, Noriyuki Yanai | 1992-11-10 |
| 5153654 | Image forming apparatus having transfer member for carrying transfer material | Takayasu Yuminamochi, Koichi Tanigawa, Akihiko Takeuchi, Yasumasa Ohtsuka, Hiroto Hasegawa +2 more | 1992-10-06 |