Issued Patents All Time
Showing 26–41 of 41 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5678139 | Process cartridge with shutter for protecting photosensitive drum | Yoshinori Sugiura, Chitose Tenpaku, Hideshi Kawaguchi, Hiroaki Miyake, Kenji Matsuda | 1997-10-14 |
| 5650841 | Process cartridge, image forming apparatus usable therewith and toner seal mounting method for process cartridge | Kenji Matsuda, Yoshinori Sugiura, Hideshi Kawaguchi, Hiroaki Miyake | 1997-07-22 |
| 5642187 | Process cartridge, image forming apparatus usable therewith and image forming system | Yoshinori Sugiura, Hideshi Kawaguchi, Hiroaki Miyake, Kenji Matsuda | 1997-06-24 |
| 5634178 | Gear unit, image forming apparatus and gear unit mounting method | Yoshinori Sugiura, Jun Azuma, Nobukazu Adachi, Takeshi Setoriyama, Chitose Tenpaku +9 more | 1997-05-27 |
| 5623328 | Process cartridge and image forming system on which process cartridge is mountable | Tadayuki Tsuda, Kazumi Sekine, Isao Ikemoto, Kazushi Watanabe, Yoshikazu Sasago +9 more | 1997-04-22 |
| 5561496 | Image forming apparatus, assembling method of image forming apparatus, and mounting method of outer casing | Yoshinori Sugiura, Jun Azuma, Nobukazu Adachi, Takeshi Setoriyama, Chitose Tenpaku +9 more | 1996-10-01 |
| 5559581 | Image forming apparatus with helical gear drive train | Yoshinori Sugiura, Jun Azuma, Nobukazu Adachi, Takeshi Setoriyama, Chitose Tenpaku +9 more | 1996-09-24 |
| 5528341 | Process cartridge with rotary member having bearing attachment portions of different diameters, and method for refusing such a rotary member | Kazuo Shishido, Hiroaki Miyake, Kenji Matsuda, Minoru Sato | 1996-06-18 |
| 5452056 | Image forming apparatus, process cartridge mountable within it and method for attaching photosensitive drum to process cartridge | Hiroo Kobayashi, Akira Higeta, Hironobu Isobe, Kazuo Shishido, Minoru Sato +2 more | 1995-09-19 |
| 5432590 | Image forming apparatus with rotatable member press-contacted to image bearing member | Hiroaki Miyake, Yoshiro Tsuchiya | 1995-07-11 |
| 5345294 | Process cartridge and image forming apparatus using same | Tadayuki Tsuda, Isao Ikemoto, Kazushi Watanabe, Kazuhiko Ishiwata, Makoto Tanaka +2 more | 1994-09-06 |
| 5331373 | Image forming apparatus, process cartridge mountable within it and method for attaching photosensitive drum to process cartridge | Hiroo Kobayashi, Akira Higeta, Hironobu Isobe, Kazuo Shishido, Minoru Sato +2 more | 1994-07-19 |
| 5294960 | Detachable two-frame process cartridge for an image forming apparatus | Tadayuki Tsuda, Shinichi Sasaki, Isao Ikemoto, Kazushi Watanabe, Hiroyuki Shirai +1 more | 1994-03-15 |
| 5283619 | Developing apparatus and process cartridge having same | Hironobu Isobe, Kazuo Shishido, Kouji Miura | 1994-02-01 |
| 5272505 | Charging device, process unit having same and image forming apparatus using process unit | Kazuo Shishido, Yasushi Sato, Shinichi Sasaki, Hiroaki Miyake | 1993-12-21 |
| 5258811 | Image forming system and process cartridge removably mountable on same | Hiroaki Miyake, Hiroo Kobayashi | 1993-11-02 |