Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6897001 | Toner and image forming method | Tsuyoshi Takiguchi, Fumihiro Arahira, Masanori Ito | 2005-05-24 |
| 6405007 | Magnetic particles for charging, process for producing the magnetic particles, and charging member, process cartridge and image-forming apparatus which have the magnetic particles | Shuichi Aita, Fumihiro Arahira | 2002-06-11 |
| 6285848 | Electrophotographic apparatus, image forming method, and process cartridge for developing an image with toner containing an external additive | Shuichi Aita, Kenji Okado, Toshiyuki Ugai, Ryoichi Fujita, Fumihiro Arahira +1 more | 2001-09-04 |
| 6157801 | Magnetic particles for charging, charging member, charging device, process cartridge, and electrophotographic apparatus | Shuichi Aita, Fumihiro Arahira, Toshio Takamori | 2000-12-05 |
| 6026260 | Electrophotographic apparatus, image forming method and process cartridge | Shuichi Aita, Fumihiro Arahira, Toshio Takamori | 2000-02-15 |
| 5940662 | Charging apparatus and electrophotographic apparatus | Yoshifumi Hano, Shuichi Aita, Tsutomu Kukimoto, Tsuyoshi Takiguchi, Fumihiro Arahira +1 more | 1999-08-17 |
| 5805961 | Charging member having bristless, process cartridge, and electrophotographic apparatus employing such a charging member | Shuichi Aita, Fumihiro Arahira, Yoshifumi Hano | 1998-09-08 |
| 5790926 | Charging member having a raised fiber-entangled material, and process cartridge and electrophotographic apparatus having the charging member | Shuichi Aita, Fumihiro Arahira, Yoshifumi Hano | 1998-08-04 |
| 5751801 | Charging member with surface layer comprising polymers, and image forming apparatus using the same | Jun Murata, Naoki Shirai, Yoshiaki Nishimura, Yuzi Ishihara, Tsunenori Ashibe | 1998-05-12 |
| 5724632 | Charging apparatus and electrophotographic apparatus | Fumihiro Arahira, Shuichi Aita, Tsutomu Kukimoto, Yoshifumi Hano | 1998-03-03 |
| 5713067 | Charging member, process cartridge using the same and electrophotographic apparatus | Yuzi Ishihara, Eiji Funabashi, Tsunenori Ashibe | 1998-01-27 |
| 5576805 | Contact charging member for charging a photosensitive drum having improved durability and a method for making the same | Yuzi Ishihara, Tsunenori Ashibe | 1996-11-19 |
| 5447813 | Toner for developing electrostatic image and image forming method | Kazuyoshi Hagiwara, Toshiaki Nakahara, Minoru Shimojo, Masami Fujimoto | 1995-09-05 |
| 5436701 | Image forming method, image forming apparatus and apparatus unit | Minoru Shimojo, Toshiaki Nakahara, Kazuyoshi Hagiwara, Masami Fujimoto | 1995-07-25 |
| 5415967 | Process for producing toner | Kiichiro Sakashita, Masaki Uchiyama, Masami Fujimoto | 1995-05-16 |
| 5406357 | Developer for developing electrostatic image, image forming method, image forming apparatus and apparatus unit | Toshiaki Nakahara, Kazuyoshi Hagiwara, Minoru Shimojyo, Masami Fujimoto | 1995-04-11 |