Issued Patents All Time
Showing 1–25 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10148167 | Power supply device and control method | Mikiyuki Aoki, Kouei Cho | 2018-12-04 |
| 10133218 | Phase control device, image forming apparatus, and recording medium | Junichi Masuda, Mikiyuki Aoki, Masahiro Nonoyama, Akimasa Ishikawa | 2018-11-20 |
| 10069425 | Switching power supply device for reducing energy loss | Kouei Cho, Mikiyuki Aoki | 2018-09-04 |
| 9927759 | Power supply device for suppressing cross regulation and image forming apparatus including power supply device | Mikiyuki Aoki, Kouei Cho | 2018-03-27 |
| 9645541 | Electric power supply device which can reduce the amount of power consumption | Kouei Cho, Mikiyuki Aoki, Yohei Yamada | 2017-05-09 |
| 9423743 | Unit checking device, unit, and image forming apparatus | Yohei Yamada, Mikiyuki Aoki | 2016-08-23 |
| 9372470 | Apparatus for detecting an abnormal circumstance at a connection between the apparatus and an attached detachable unit | Yohei Yamada, Mikiyuki Aoki, Kouei Cho | 2016-06-21 |
| 9335710 | Electric power supply control device which can increase power converting efficiency | Mikiyuki Aoki, Taku Kimura, Yohei Yamada, Morio Kinoshita, Kouei Cho | 2016-05-10 |
| 9256188 | Image forming apparatus | Mikiyuki Aoki, Yohei Yamada, Kouei Cho | 2016-02-09 |
| 9031444 | Image forming apparatus provided with fixing unit for fixing images formed on paper and method of controlling heaters of the apparatus | Akinori Kimata, Yoshihito Sasamoto, Tadayuki Ueda, Eiji Nishikawa, Takanobu Shiki | 2015-05-12 |
| 8941845 | Image forming apparatus | Tadayuki Ueda, Yoshihito Sasamoto, Eiji Nishikawa, Satoshi Miyajima, Takanobu Shiki | 2015-01-27 |
| 8879940 | Image forming apparatus which controls fluctuation of fixing rollers based on a detected interval between transferred sheets of recording media | Takayuki Ueda, Yoshihito Sasamoto, Eiji Nishikawa, Satoshi Miyajima | 2014-11-04 |
| 8417136 | Image forming apparatus, fixing device, and image forming system using the same | Teruhiko Fujikura, Tadayuki Ueda, Yoshihito Sasamoto, Satoshi Miyajima | 2013-04-09 |
| 8285185 | Fixing device and image forming apparatus using the same | Kosuke Sasaki, Tadayuki Ueda, Yoshihito Sasamoto, Satoshi Miyajima | 2012-10-09 |
| 7913102 | Variable frequency clock output circuit and apparatus, motor driving apparatus, and image forming apparatus | Yuta Tachibana, Katsunori Takahashi, Tomonobu Tamura, Norihiko Nakano | 2011-03-22 |
| 7872768 | Image forming apparatus capable of notifying user of exit status of discharged sheet, image forming method, and program product | Kentaro Nagatani, Shinichi Asai, Yoshihiko Yoshizaki, Toshikazu Higashi, Yoshiaki Takano | 2011-01-18 |
| 6721066 | Image processor | Yoshihiko Hirota, Hiroyuki Suzuki | 2004-04-13 |
| 6417932 | Image processor | Yoshihiko Hirota, Hiroyuki Suzuki | 2002-07-09 |
| 6064494 | Image processor | Yoshihiko Hirota, Hiroyuki Suzuki | 2000-05-16 |
| 6061542 | Image forming apparatus which modifies image forming condition depending on the number of photosensitive drums used for a particular image formation | Takeshi Minami, Takeshi Satake, Satoru Kawata | 2000-05-09 |
| 6029023 | Image forming apparatus operating in color mode and monochrome mode | Seiichi Munemori, Hirokazu Matsuo, Takeshi Minami, Satoru Kawata, Takeshi Satake | 2000-02-22 |
| 5867634 | Image processor | Yoshihiko Hirota, Hiroyuki Suzuki | 1999-02-02 |
| 5805970 | Document size detecting device using a plurality of thresholds | — | 1998-09-08 |
| 5761338 | Image detection and background processing device and method | — | 1998-06-02 |
| 5726780 | Image processing apparatus | Yoshihiko Hirota, Hiroyuki Suzuki | 1998-03-10 |