Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11378908 | Image forming apparatus and program | — | 2022-07-05 |
| 10691058 | Image forming apparatus, lubricant application method, and computer program | Kunitomo Sasaki, Sayaka Morita, Tsugihito Yoshiyama | 2020-06-23 |
| 10656548 | Image forming apparatus with a charging power supply that outputs an AC bias and a DC bias | Tsugihito Yoshiyama, Sayaka Morita, Kunitomo Sasaki | 2020-05-19 |
| 9897966 | Image formation apparatus and method for controlling the same | — | 2018-02-20 |
| 9041973 | Support system, control device, image forming apparatus, and support method utilizing cards on which written information is printed | Eiji Tabata, Toshihito Kobayashi, Sayaka Morita | 2015-05-26 |
| 8824938 | Image forming apparatus | Kanji Nakayama, Tomohisa Yoshida, Wataru Onoda, Narutaka Yoshida, Noboru Ito | 2014-09-02 |
| 8693929 | Image forming apparatus | Tomohisa Yoshida, Kanji Nakayama, Wataru Onoda, Narutaka Yoshida, Noboru Ito | 2014-04-08 |
| 8639167 | Developing device and image forming device | Kanji Nakayama, Tomohisa Yoshida, Wataru Onoda, Yoshiyuki Iguchi, Noboru Ito | 2014-01-28 |
| 7149447 | Image forming device having an electrifying member in contact with an image carrier | — | 2006-12-12 |
| 6618188 | Rewritable display sheet, image forming apparatus for displaying image on rewritable display sheet, and image displaying method | — | 2003-09-09 |
| 5940661 | Image forming apparatus with a charging member which removes smears on an image forming member | Masataka Yagi, Tamotsu Sakuraba, Tetsumaru Fujita, Narutaka Yoshida, Akira Hirota +3 more | 1999-08-17 |
| 5911097 | Image forming apparatus and method using charge control means | Tsugihito Yoshiyama, Yasuhiro Nakagami, Masami Matsuura, Akira Hirota | 1999-06-08 |
| 5159388 | Image forming apparatus | Tsugihito Yoshiyama, Hiroshi Okamoto, Moriyoshi Matsushiro, Masataka Oda | 1992-10-27 |