Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12044995 | Image forming apparatus capable of determining failure timing of a gear used therein, and determining method of the failure timing | Norio Kubo, Masashi Fujishima | 2024-07-23 |
| 11599044 | Image forming apparatus that can decrease variations in volume and weight of developer in a development casing | — | 2023-03-07 |
| 11347164 | Developing device which supplies two-component developer containing toner and carrier and which discharges excessive developer and image forming apparatus therewith | — | 2022-05-31 |
| 11314183 | Developing device and image forming apparatus therewith | Masashi Fujishima, Norio Kubo, Asami Sasaki, Yasuhiro Tauchi, Tamotsu Shimizu +3 more | 2022-04-26 |
| 11209752 | Developing device and image forming apparatus therewith | Asami Sasaki, Akira Matayoshi, Norio Kubo, Yuji Toyota, Tamotsu Shimizu +2 more | 2021-12-28 |
| 10775727 | Image forming apparatus with a charging amount acquisition unit that performs a charging amount acquisition operation for forming a measurement toner image on an image carrier | Akifumi Yamaguchi, Yasushi Imanishi, Tamotsu Shimizu | 2020-09-15 |
| 10691052 | Image forming apparatus | Tamotsu Shimizu, Akifumi Yamaguchi, Yasuhiro Tauchi, Kenichi Tamaki | 2020-06-23 |
| 10599070 | Developing device and image forming apparatus therewith to prevent degradation in charging performance | — | 2020-03-24 |
| 10156812 | Stirring conveyance member, developing device including the same, and image forming apparatus | — | 2018-12-18 |
| 9846388 | Developing device including a guide portion and an image forming apparatus provided with the same | Yukihiro Mori | 2017-12-19 |
| 9835979 | Developing device and image forming apparatus therewith | — | 2017-12-05 |
| 9703235 | Developing device and image forming apparatus therewith | — | 2017-07-11 |
| 9658575 | Developing device and image forming apparatus therewith | Yu Sasaki | 2017-05-23 |
| 9658572 | Developing device and image forming apparatus therewith | Yu Sasaki | 2017-05-23 |
| 9535356 | Image forming apparatus having a function to apply charge removal light to photosensitive member | Shinji Otani, Norio Kubo, Masashi Fujishima, Yoshimi Shimizu, Kenichi Tamaki | 2017-01-03 |
| 9429875 | Developing device and image forming apparatus having the same | — | 2016-08-30 |
| 9348262 | Developing device having developer supply port and developer discharge port, and image forming apparatus therewith | — | 2016-05-24 |
| 8942579 | Image forming apparatus including developing unit | — | 2015-01-27 |
| 8515314 | Developing device having first and second groups of scraper blades in axially offset positions and image forming apparatus with the same | Tetsuya Toichi, Ryoji Nishimura | 2013-08-20 |
| 8090300 | Powder conveying apparatus | — | 2012-01-03 |
| 7555247 | Toner conveying device, developing device, and image forming device having the same | Hiroyuki Hamakawa, Takaaki Kamei, Asami Kotera, Yoshihiro Yamagishi, Eiji Nimura +1 more | 2009-06-30 |
| 7466943 | Image forming apparatus comprising a developer roller | Hiroyuki Hamakawa, Hirohisa Endou | 2008-12-16 |
| 7421226 | Developing device and image forming apparatus | Eiji Nimura, Hirohisa Endou, Hiroyuki Hamakawa, Yoshihiro Yamagishi | 2008-09-02 |
| 7421227 | Developing device and image forming apparatus | Hiroyuki Hamakawa, Takaaki Kamei, Yoshihiro Yamagishi, Hirohisa Endou | 2008-09-02 |
| 7421233 | Developing device and image forming apparatus | Yoshihiro Yamagishi, Eiji Nimura, Takaaki Kamei, Asami Kotera | 2008-09-02 |