Issued Patents All Time
Showing 26–41 of 41 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6134407 | Charging apparatus for charging a moving member to be charged including an elastic rotatable member carrying electroconductive particles on the surface thereof | Yukio Nagase, Yasunori Chigono, Jun Hirabayashi | 2000-10-17 |
| 6128456 | Image forming apparatus having a charging member applying an electric charge through electrically conductive or electroconductive particles to the surface of a photosensitive or image bearing member | Yasunori Chigono, Yukio Nagase, Jun Hirabayashi | 2000-10-03 |
| 6118965 | Image forming apparatus having a contact-type charger | Jun Hirabayashi, Yasunori Chigono | 2000-09-12 |
| 6081681 | Charging device, charging method, process cartridge and image forming apparatus | Yukio Nagase, Yasunori Chigono, Jun Hirabayashi | 2000-06-27 |
| 6061539 | Charging member, charging device and image forming apparatus | Yasushi Sato, Hideyuki Yano, Tadashi Furuya, Yasunori Chigono, Seiji Mashimo | 2000-05-09 |
| 6038420 | Charging device, charging method and image forming apparatus | Jun Hirabayashi, Yasunori Chigono | 2000-03-14 |
| 6038418 | Charging method and a charging device for charging a member to be charged by a flexible charging member | Yasunori Chigono, Jun Hirabayashi | 2000-03-14 |
| 6002900 | Image forming method, image forming apparatus and process cartridge | — | 1999-12-14 |
| 5930566 | Electrostatic charging apparatus having conductive particles with a multi-peaked size distribution | — | 1999-07-27 |
| 5822659 | Image forming apparatus and process cartridge detachably mountable relative to an image forming apparatus | — | 1998-10-13 |
| 5754927 | Magnetic charging brush having particular magnetic fields | Tadashi Furuya, Takeo Yamamoto, Yasunori Chigono, Seiji Mashimo | 1998-05-19 |
| 5729802 | Contact charger for charging a photosensitive member | Jun Hirabayashi, Nobuyuki Ito, Tadashi Furuya, Yasunori Chigono, Seiji Mashimo | 1998-03-17 |
| 5708932 | Charging system and electrophotography apparatus | Hideyuki Yano, Akio Maruyama, Yomishi Toshida, Noboru Kashimura, Kazushige Nakamura +2 more | 1998-01-13 |
| 5666192 | Charging member and image forming apparatus | Seiji Mashimo, Yasushi Sato, Tadashi Furuya | 1997-09-09 |
| 5659852 | Image forming method, image forming apparatus and process cartridge | Yasunori Chigono, Tadashi Furuya, Seiji Mashimo | 1997-08-19 |
| 5579095 | Charging device | Hideyuki Yano, Tadashi Furuya, Seiji Mashimo | 1996-11-26 |