Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12271140 | Brush having a higher contact pressure with an image bearing member at an upstream end of the brush and image forming apparatus | Takayuki Kanazawa, Nobuo Oshima, Takayoshi Kihara, Shuhei Tokiwa, Taichi Sato | 2025-04-08 |
| 12204269 | Image forming apparatus including movable brush member | Satoru Motohashi, Shuhei Tokiwa, TSUBASA YOSHIDA | 2025-01-21 |
| 12147170 | Image forming apparatus having toner charging | Yuta Isobe, Takashi Koyanagi, Akihisa Matsukawa, Ryosuke Kanai, Hiroki Tanaka +3 more | 2024-11-19 |
| 11860566 | Image forming apparatus | Takayuki Kanazawa, Nobuo Oshima, Takayoshi Kihara, Shuhei Tokiwa, Taichi Sato | 2024-01-02 |
| 10635018 | Image forming apparatus having a plurality of modes different in background potential difference | Ryosuke Kanai, Seiichi Shinohara | 2020-04-28 |
| 10209668 | Image forming apparatus, process cartridge, developing cartridge, and drum cartridge | Akihisa Matsukawa, Toshiki Okamura, Takanori Watanabe, Hiroyoshi Iwayama, Makoto Tokudome +2 more | 2019-02-19 |
| 10108123 | Image forming apparatus | Motonari Ito, Makoto Tokudome | 2018-10-23 |
| 10095150 | Image forming apparatus | Takashi Hiramatsu, Yusuke Usui, Hiroyoshi Iwayama | 2018-10-09 |
| 9971298 | Image forming apparatus, process cartridge, developing cartridge, and drum cartridge | Akihisa Matsukawa, Toshiki Okamura, Takanori Watanabe, Hiroyoshi Iwayama, Makoto Tokudome +2 more | 2018-05-15 |
| 9910405 | Developing device, process cartridge, and image forming apparatus | Takanori Watanabe, Akihisa Matsukawa | 2018-03-06 |
| 9904202 | Image forming apparatus having potential difference control | Akihisa Matsukawa, Takanori Watanabe | 2018-02-27 |
| 9645537 | Image forming apparatus capable of detecting presence or absence of a cartridge or a shape of the cartridge without increasing the number of components | Motoki Adachi, Satoshi Sunahara, Takanori Watanabe | 2017-05-09 |
| 9547273 | Image forming apparatus having simultaneous development and cleaning | Motonari Ito, Motoki Adachi, Satoshi Sunahara | 2017-01-17 |
| 9429868 | Image forming apparatus | Yusuke Usui, Akihisa Matsukawa, Takashi Hiramatsu | 2016-08-30 |
| 9335697 | Image forming apparatus having image bearing member life estimation unit | Masahiro Yoshida, Kohei Matsuda, Koichiro Takashima, Nobuo Oshima, Masanori Tanaka +2 more | 2016-05-10 |
| 9086670 | Image forming apparatus | Kohei Matsuda, Koichiro Takashima, Masahiro Yoshida | 2015-07-21 |
| 9052628 | Image forming apparatus having collecting operation for residual toner | Takashi Mukai, Masahiro Yoshida, Koichiro Takashima, Nobuo Oshima, Kohei Matsuda +1 more | 2015-06-09 |
| 9002225 | Image forming apparatus with developer feeding control | Nobuo Oshima, Masahiro Yoshida, Koichiro Takashima, Kohei Matsuda, Takashi Mukai +1 more | 2015-04-07 |
| 8891983 | Image forming apparatus having waste developer control | Masahiro Yoshida, Koichiro Takashima, Nobuo Oshima, Kohei Matsuda, Takashi Mukai +1 more | 2014-11-18 |