Issued Patents All Time
Showing 26–50 of 51 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7062194 | Charging device, and process cartridge and image forming apparatus including the charging device | Masato Yanagida, Hiroyuki Nagashima, Naohiro Kumagai, Toshio Koike, Atsushi Sampe +5 more | 2006-06-13 |
| 7050741 | Imaging apparatus, and toner and process cartridge used in the imaging apparatus | Toshio Koike, Masato Yanagida, Takeshi Shintani, Naohiro Kumagai, Atsushi Sampe +4 more | 2006-05-23 |
| 6993281 | Image forming apparatus and process cartridge including flexible member | Hideo Yoshizawa, Hiroyuki Nagashima, Yoshiyuki Kimura, Hideki Zemba, Eiji Kurimoto | 2006-01-31 |
| 6975830 | Image forming apparatus, process cartridge, and waste toner recovery device | Hideo Yoshizawa, Hiroyuki Nagashima, Yoshiyuki Kimura, Hideki Zemba, Eiji Kurimoto +2 more | 2005-12-13 |
| 6072977 | Even bias applying transfer roller | — | 2000-06-06 |
| 6033818 | Developing device for an image forming apparatus | Toshihiro Sugiyama, Kazuhiro Yuasa, Shuichi Endoh, Iwao Matsumae, Yoshiaki Tanaka +6 more | 2000-03-07 |
| 5995789 | Toner cartridge including toner outlet openings and toner collection openings arranged substantially in a single array | Hiroshi Saitoh | 1999-11-30 |
| 5897243 | Electrophotographic recording apparatus configured to switch a bias voltage in a developing unit | Satoru Komatsubara, Kazuhiro Yuasa, Eiji Takenaka, Mugijiroh Uno, Toshihiro Sugiyama +1 more | 1999-04-27 |
| 5879752 | Method of coating a toner conveyor roller | Kazuhiro Yuasa, Shuichi Endoh, Iwao Matsumae, Yoshiaki Tanaka, Hiroshi Hosokawa +6 more | 1999-03-09 |
| 5845183 | Developing device for an image forming apparatus | Toshihiro Sugiyama, Kazuhiro Yuasa, Shuichi Endoh, Iwao Matsumae, Yoshiaki Tanaka +6 more | 1998-12-01 |
| 5826144 | Developing device for an electrophotographic recording apparatus including bias control of a toner supplying roller | Eiji Takenaka, Kazuhiro Yuasa, Shuichi Endoh, Iwao Matsumae, Yoshiaki Tanaka +6 more | 1998-10-20 |
| 5768665 | Image forming apparatus with bias control to prevent undesirable toner deposition | Tetsuo Yamanaka, Kazuhiro Yuasa, Shuichi Endoh, Iwao Matsumae, Yoshiaki Tanaka +6 more | 1998-06-16 |
| 5734952 | Developing device for an image forming apparatus and toner cartridge for replenishing a fresh toner to the developing device | Hiroshi Saitoh | 1998-03-31 |
| 5708942 | Developing device for an image forming apparatus | Toshihiro Sugiyama, Kazuhiro Yuasa, Shuichi Endoh, Iwao Matsumae, Yoshiaki Tanaka +6 more | 1998-01-13 |
| 5697026 | Developing device having the lengths of two toner transporting rollers and an image bearing member in specific relationships | Iwao Matsumae, Kazuhiro Yuasa, Shuichi Endoh, Yoshiaki Tanaka, Hiroshi Hosokawa +6 more | 1997-12-09 |
| 5689782 | Developing apparatus for electronic photographic recording equipment, having two developer transfer rollers | Kazuhiro Yuasa, Shuichi Endoh, Iwao Matsumae, Yoshiaki Tanaka, Hiroshi Hosokawa +6 more | 1997-11-18 |
| 5666625 | Device for electrostatically developing a latent image on an image carrier | Satoru Komatsubara, Kazuhiro Yuasa, Shuichi Endoh, Iwao Matsumae, Yoshiaki Tanaka +6 more | 1997-09-09 |
| 5625439 | Electrophotographic recording apparatus having toner delivering member with large wetting angle | — | 1997-04-29 |
| 5625441 | Developing device for an image forming apparatus | Toshihiro Sugiyama, Kazuhiro Yuasa, Shuichi Endoh, Iwao Matsumae, Yoshiaki Tanaka +6 more | 1997-04-29 |
| 5625440 | Developing device having seals between a toner transport roller and the toner hopper which prevent toner leakage and scattering | Iwao Matsumae, Kazuhiro Yuasa, Shuichi Endoh, Yoshiaki Tanaka, Hiroshi Hosokawa +6 more | 1997-04-29 |
| 5625438 | Toner, and devices for electrostatically depositing a uniform application thereof | Toshihiro Sugiyama, Kazuhiro Yuasa, Shuichi Endoh, Iwao Matsumae, Yoshiaki Tanaka +6 more | 1997-04-29 |
| 5617191 | Toner conveyor roller and image forming apparatus having the same | Kazuhiro Yuasa, Shuichi Endoh, Iwao Matsumae, Yoshiaki Tanaka, Hiroshi Hosokawa +6 more | 1997-04-01 |
| 5610693 | Developing device for an image forming apparatus | Toshihiro Sugiyama, Kazuhiro Yuasa, Shuichi Endoh, Iwao Matsumae, Yoshiaki Tanaka +6 more | 1997-03-11 |
| 5552870 | Developing device for an image forming apparatus | Kazuhiro Yuasa, Shuichi Endoh, Iwao Matsumae, Yoshiaki Tanaka, Hiroshi Hosokawa +6 more | 1996-09-03 |
| 5489747 | Developing device for an image forming apparatus | Eiji Takenaka, Kazuhiro Yuasa, Shuichi Endoh, Iwao Matsumae, Yoshiaki Tanaka +6 more | 1996-02-06 |