Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12416881 | Image forming apparatus | Shuichi Tetsuno, Shinji Katagiri, Hiroko Yokoyama, Wataru Takahashi, Shohei Ishio +2 more | 2025-09-16 |
| 12287593 | Image forming apparatus which supplies yellow toner as protective agent to secondary transfer member | Keisuke Ishizumi | 2025-04-29 |
| 12265344 | Image forming apparatus to suppress scattering of toner | HIROKO KATAGIRI, Shinji Katagiri | 2025-04-01 |
| 12265355 | Image forming apparatus having grounded fixing member | Shinji Katagiri | 2025-04-01 |
| 12169371 | Image forming apparatus | — | 2024-12-17 |
| 12019382 | Image forming apparatus | Shinji Katagiri | 2024-06-25 |
| 11971670 | Image forming apparatus to control transfer voltage for secondary transfer to recording material | Shinji Katagiri, Shuichi Tetsuno | 2024-04-30 |
| 11971666 | Image forming apparatus and control method, that control charging voltage according to positions of developing roller | HIROKO KATAGIRI, Shinji Katagiri, Takashi Mukai | 2024-04-30 |
| 11934117 | Image forming apparatus | Keisuke Ishizumi, Shinji Katagiri | 2024-03-19 |
| 11846899 | Image forming apparatus | Shuichi Tetsuno, Shinji Katagiri, Hiroko Yokoyama, Wataru Takahashi, Shohei Ishio +2 more | 2023-12-19 |
| 11841676 | Image forming apparatus controlling voltage applied to transfer member | Shinji Katagiri | 2023-12-12 |
| 11841649 | Image forming apparatus providing variable transfer voltage based on transfer mode | HIROKO KATAGIRI, Shinji Katagiri | 2023-12-12 |
| 11747754 | Image forming apparatus | Shinji Katagiri | 2023-09-05 |
| 10935904 | Image forming apparatus | Jun Miura, Takuya Kitamura, Kazunari Hagiwara, Takashi Hiramatsu | 2021-03-02 |
| 10719028 | Process cartridge and image forming apparatus | Kazunari Hagiwara, Takuya Kitamura, Takashi Hiramatsu, Jun Miura | 2020-07-21 |
| 10444660 | Developing apparatus with regulating member having a curved contact surface and image forming apparatus | Kazunari Hagiwara, Takaaki Shinkawa, Takashi Mukai, Takuya Kitamura | 2019-10-15 |
| 10437171 | Developing device, process cartridge and image forming apparatus | Kazunari Hagiwara, Takaaki Shinkawa, Takashi Mukai, Takuya Kitamura | 2019-10-08 |
| 10423115 | Image forming apparatus | Shuichi Tetsuno, Shinji Katagiri, Tsuguhiro Yoshida | 2019-09-24 |
| 10394162 | Developing apparatus, process cartridge, and image forming apparatus | Takashi Mukai, Kazunari Hagiwara, Takaaki Shinkawa, Takuya Kitamura | 2019-08-27 |
| 10310424 | Fixing device that alleviates a physical load on non-heat-generating regions of a heat generating layer of a fixing film | Takashi Narahara, Takeshi Shinji, Toru Imaizumi, Kazuhiro Doda, Kohei Wakatsu | 2019-06-04 |
| 9086660 | Image forming apparatus with modified transfer brush | Takaaki Akamatsu, Kenichi Ogawa | 2015-07-21 |