Issued Patents All Time
Showing 1–25 of 44 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12189331 | Positioning member, holding device, process cartridge, and image forming apparatus | Tatsuya Kubo, Yuuki Tsuchiya, Shinya Karasawa | 2025-01-07 |
| 12050414 | Developing device including filter detachable holder, process cartridge, and image forming apparatus | Yusuke Chiba, Takuya Suganuma, Taku Kumiya, Hotaru HASHIKAWA | 2024-07-30 |
| 11934145 | Developing apparatus, developer for electrophotographic image formation, electrophotographic image forming method, and electrophotographic image forming apparatus | Minoru Masuda, Tohru Suganuma, Masashi Nagayama, Hiroyuki Kishida, Kento Takeuchi +3 more | 2024-03-19 |
| 11880160 | Filter holding device, developing device, process cartridge, image forming apparatus, and filter | Hotaru HASHIKAWA, Tatsuya Kubo, Yuta YABUTA, Takuya Suganuma | 2024-01-23 |
| 11813874 | Process cartridge and image forming apparatus incorporating same | Tatsuya Kubo, Shinya Karasawa, Yuuki Tsuchiya | 2023-11-14 |
| 11275325 | Image forming apparatus including a process cartridge that includes a developing device | Hotaru HASHIKAWA, Yoshihiro Fujiwara, Nobuo Takami, Ryusuke Mase, Tomohiro Kubota +2 more | 2022-03-15 |
| 10281848 | Image forming apparatus and image forming method | Yuuji Wada, Naoto Kochi, Hiroki Nakamatsu, Takahiro Suzuki, Shinya Tanaka +8 more | 2019-05-07 |
| 10228639 | Image forming apparatus with a support to adjust a rotator and a guide | Seiichi Kogure, Naohiro Kumagai, Junpei Fujita, Tatsuya Ohsugi, Kenji Sugiura +2 more | 2019-03-12 |
| 10185255 | Image forming apparatus and image forming method for controlling a secondary transfer bias according to recording sheet type | Naoto Kochi, Hirokazu Ishii, Seiichi Kogure, Naohiro Kumagai, Kenji Sugiura +6 more | 2019-01-22 |
| 10152001 | Image forming apparatus | Naohiro Kumagai, Seiichi Kogure, Junpei Fujita, Kenji Sugiura, Yuuji Wada | 2018-12-11 |
| 10120304 | Belt device including support portions and an adjuster to adjust positions of the support portions | Junpei Fujita, Naohiro Kumagai, Seiichi Kogure, Kenji Sugiura, Yuuji Wada | 2018-11-06 |
| 10101690 | Image forming apparatus | Kenji Sugiura, Naohiro Kumagai, Seiichi Kogure, Junpei Fujita, Yuuji Wada +1 more | 2018-10-16 |
| 9897943 | Belt unit, transfer unit, and image forming apparatus including a pressing member that presses an edge of a belt | Junpei Fujita, Naohiro Kumagai, Seiichi Kogure, Kenji Sugiura, Yuuji Wada +1 more | 2018-02-20 |
| 9835987 | Image forming apparatus and transfer bias control | Kenji Sugiura, Hiroyoshi Haga, Hirokazu Ishii, Naohiro Kumagai, Seiichi Kogure +5 more | 2017-12-05 |
| 9817341 | Image forming apparatus | Tatsuya Ohsugi, Kenji Sugiura, Hirokazu Ishii, Hiroyoshi Haga, Naohiro Kumagai +5 more | 2017-11-14 |
| 9811046 | Image forming apparatus | Yuuji Wada, Naohiro Kumagai, Seiichi Kogure, Junpei Fujita, Kenji Sugirua +4 more | 2017-11-07 |
| 9811036 | Belt device and image forming apparatus including same | Junpei Fujita, Kenji Sugiura, Yuuji Wada, Hiroyoshi Haga, Seiichi Kogure +1 more | 2017-11-07 |
| 9766575 | Image forming apparatus | Tatsuya Ohsugi, Kenji Sugiura, Hirokazu Ishii, Hiroyoshi Haga, Yuuji Wada +5 more | 2017-09-19 |
| 9740156 | Image forming apparatus that adjusts a transfer bias according to surface properties of a transfer target | Yuuji Wada, Hiroyoshi Haga, Naohiro Kumagai, Seiichi Kogure, Junpei Fujita +4 more | 2017-08-22 |
| 9720364 | Image forming apparatus | Seiichi Kogure, Naohiro Kumagai, Junpei Fujita, Tatsuya Ohsugi, Kenji Sugiura +3 more | 2017-08-01 |
| 9720355 | Image forming apparatus | Tatsuya Ohsugi, Kenji Sugiura, Jyunya Sakuraba, Hirokazu Ishii, Toshitaka Yamaguchi +7 more | 2017-08-01 |
| 9696662 | Cleaning device and image forming apparatus incorporating same | Mitsuru Takahashi, Hiroyoshi Haga, Kenji Sugiura, Naohiro Kumagai, Seiichi Kogure +5 more | 2017-07-04 |
| 9690246 | Image forming apparatus including contact members disposed side by side at positions opposing a guide unit | Seiichi Kogure, Naohiro Kumagai, Junpei Fujita, Tatsuya Ohsugi, Kenji Sugiura +2 more | 2017-06-27 |
| 9645530 | Image forming apparatus | Naoto Kochi, Kenji Sugiura, Hirokazu Ishii, Hiroyoshi Haga, Yuuji Wada +4 more | 2017-05-09 |
| 9632461 | Image forming apparatus controlling transfer bias based on temperature and humidity | Kenji Sugiura, Toshitaka Yamaguchi, Hiroyoshi Haga, Hirokazu Ishii, Shinya Tanaka +6 more | 2017-04-25 |