Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7323279 | One-component magnetic toner for developing an electrostatic charge image, process cartridge, and method for recycling the process cartridge | Kazunori Kato | 2008-01-29 |
| 6548218 | Magnetic particles for charging means, and electrophotographic apparatus, process cartridge and image forming method including same | Tsutomu Kukimoto, Kenji Okado, Tsuyoshi Takiguchi | 2003-04-15 |
| 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 | Fumihiro Arahira, Kiyoshi Mizoe | 2002-06-11 |
| 6285848 | Electrophotographic apparatus, image forming method, and process cartridge for developing an image with toner containing an external additive | Kenji Okado, Toshiyuki Ugai, Ryoichi Fujita, Fumihiro Arahira, Kiyoshi Mizoe +1 more | 2001-09-04 |
| 6157801 | Magnetic particles for charging, charging member, charging device, process cartridge, and electrophotographic apparatus | Fumihiro Arahira, Kiyoshi Mizoe, Toshio Takamori | 2000-12-05 |
| 6026260 | Electrophotographic apparatus, image forming method and process cartridge | Fumihiro Arahira, Kiyoshi Mizoe, Toshio Takamori | 2000-02-15 |
| 5940662 | Charging apparatus and electrophotographic apparatus | Yoshifumi Hano, Tsutomu Kukimoto, Tsuyoshi Takiguchi, Fumihiro Arahira, Yuji Ishihara +1 more | 1999-08-17 |
| 5915150 | Image forming method utilizing toner having inorganic particles and particles of a specific sphericity | Tsutomu Kukimoto, Motoo Urawa, Satoshi Yoshida | 1999-06-22 |
| 5890037 | Electrophotographic apparatus using photoconductive member chargeable with magnetic brush | Tsutomu Kukimoto, Akio Maruyama, Yoshifumi Hano | 1999-03-30 |
| 5805961 | Charging member having bristless, process cartridge, and electrophotographic apparatus employing such a charging member | Kiyoshi Mizoe, 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 | Kiyoshi Mizoe, Fumihiro Arahira, Yoshifumi Hano | 1998-08-04 |
| 5753396 | Image forming method | Tatsuya Nakamura, Masayoshi Kato, Koji Inaba, Kengo Hayase, Yuki Nishio | 1998-05-19 |
| 5751405 | Image forming apparatus | Tsutomu Kukimoto, Satoshi Yoshida, Yoshifumi Hano | 1998-05-12 |
| 5731122 | Image forming method and image forming apparatus | Satoshi Yoshida, Motoo Urawa, Tsutomu Kukimoto, Yoshifumi Hano, Yuki Nishio | 1998-03-24 |
| 5724632 | Charging apparatus and electrophotographic apparatus | Fumihiro Arahira, Tsutomu Kukimoto, Kiyoshi Mizoe, Yoshifumi Hano | 1998-03-03 |
| 5715501 | Image forming method using a surface with a specified water contact angle and process cartridge using such a method | Toshiyuki Yoshihara, Motoo Urawa, Tsutomu Kukimoto, Yoshifumi Hano | 1998-02-03 |
| 5608500 | Contact charging member and electrophotographic apparatus using the same | Eiji Funabashi | 1997-03-04 |
| 5576810 | Image forming method | Toshiyuki Yoshihara, Tsutomu Kukimoto, Satoshi Yoshida, Yoshifumi Hano, Yuki Nishio | 1996-11-19 |
| 5310812 | Binder resin for a toner for developing electrostatic images, and process for production thereof | Satoshi Yasuda, Kiichiro Sakashita, Yasuo Mitsuhashi, Seiichi Takagi, Yoshinobu Nagai +1 more | 1994-05-10 |
| 5219947 | Binder resin for a toner for developing electrostatic images, and process for production thereof | Satoshi Yasuda, Kiichiro Sakashita, Yasuo Mitsuhashi, Seiichi Takagi, Yoshinobu Nagai +1 more | 1993-06-15 |
| 4966829 | Toner for developing electrostatic images, binder therefor and process for production thereof | Satoshi Yasuda, Kiichiro Sakashita, Yasuo Mitsuhashi, Seiichi Takagi, Yoshinobu Nagai +1 more | 1990-10-30 |
| 4868085 | Developer for developing electrostatic images and process for forming images | — | 1989-09-19 |