Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11507008 | Image forming apparatus | Takao Izumi, Suguru Kurita | 2022-11-22 |
| 11009808 | Toner cartridge and image forming apparatus | Tsuyoshi Itou, Kazuhisa Takeda, Masahiro Ikuta, Takafumi Hara, Shigeru Fujiwara +1 more | 2021-05-18 |
| 10816912 | Toner cartridge and image forming apparatus using toner characteristics for improving image quality | Tsuyoshi Itou, Kazuhisa Takeda, Masahiro Ikuta, Takafumi Hara, Shigeru Fujiwara +1 more | 2020-10-27 |
| 10809646 | Toner cartridge and image forming apparatus | Tsuyoshi Itou, Kazuhisa Takeda, Masahiro Ikuta, Takafumi Hara, Shigeru Fujiwara +1 more | 2020-10-20 |
| 8892020 | Image forming apparatus and image forming method | Koji Imamiya, Takayasu Aoki, Tsuyoshi Itou, Noboru Furuyama | 2014-11-18 |
| 8818219 | Image forming apparatus and toner charge amount adjustment method of the image forming apparatus | — | 2014-08-26 |
| 8615189 | Image forming apparatus and image forming method | Koji Imamiya, Takayasu Aoki, Tsuyoshi Itou, Noboru Furuyama | 2013-12-24 |
| 8121500 | Image forming apparatus, method of determining amount of developer supply, and program of determining amount of developer supply | — | 2012-02-21 |
| 7995942 | Developing apparatus of image forming apparatus and supplying method of toner | Chie Tonohiro | 2011-08-09 |
| 7343106 | Image forming apparatus having dismountable units necessary for image forming | — | 2008-03-11 |
| 7139492 | Imaging forming apparatus having a plurality of dismountable units necessary for image forming | — | 2006-11-21 |
| 6512908 | Developing apparatus having a cylindrical sleeve for holding magnetic toner and a magnetic shaft rotatable inside the sleeve | — | 2003-01-28 |
| 5585897 | Contact charging device for charging a surface to a given potential and image forming apparatus using the same | Kazuhisa Takeda | 1996-12-17 |