Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12210306 | Image forming system, resistance detection device, resistance detection method, and program | Yuhei Tatsumoto, Akimasa Ishikawa, Makoto Shimazoe, Kouei Cho | 2025-01-28 |
| 11990856 | Rotation detector and image forming apparatus | Hiroyuki Yoshikawa, Kazumichi YOSHIDA, Satoshi Miyajima, Kouei Cho | 2024-05-21 |
| 11387758 | Motor controller and image forming apparatus | Hiroyuki Yoshikawa, Daichi Suzuki | 2022-07-12 |
| 11233471 | Motor control device, image forming apparatus, and method for estimating initial position of magnetic pole of rotor | Daichi Suzuki, Yuji Kobayashi, Kazumichi YOSHIDA, Harumitsu Fujimori, Hiroyuki Yoshikawa | 2022-01-25 |
| 11223309 | Motor control device, method of estimating initial position of magnetic pole of rotor, and image forming apparatus | Hiroyuki Yoshikawa, Yuji Kobayashi, Kazumichi YOSHIDA, Daichi Suzuki, Harumitsu Fujimori | 2022-01-11 |
| 11218101 | Motor control device, method of estimating initial position of magnetic pole of rotor, and image forming apparatus | Hiroyuki Yoshikawa, Yuji Kobayashi, Kazumichi YOSHIDA, Daichi Suzuki, Harumitsu Fujimori | 2022-01-04 |
| 11152879 | Motor control device, method of estimating initial position of magnetic pole of rotor, and image forming apparatus | Hiroyuki Yoshikawa, Daichi Suzuki | 2021-10-19 |
| 10790767 | Control device of permanent magnet synchronous motor and image forming device | Hiroyuki Yoshikawa, Daichi Suzuki | 2020-09-29 |
| 10651765 | Motor controller, image forming apparatus and motor controlling method | Daichi Suzuki, Hiroyuki Yoshikawa, Yasuhiro KOIDE | 2020-05-12 |
| 10141877 | Controller for permanent magnet synchronous motor, control method, and image forming apparatus | Yasuhiro KOIDE, Daichi Suzuki, Hiroyuki Yoshikawa | 2018-11-27 |
| 10141878 | Controller for permanent magnet synchronous motor, and control method for estimating initial position of rotor | Daichi Suzuki, Hiroyuki Yoshikawa, Yasuhiro KOIDE | 2018-11-27 |
| 10081508 | Sheet feeder, document reader, and image forming apparatus | Takaki Kato, Yuji Kobayashi, Hiroshi Yamaguchi, Satoshi Teshima | 2018-09-25 |
| 10020760 | Control method for three-phase dc brush less motor, control device, and image forming device | Katsuhide Sakai, Yasuhiro KOIDE, Yuhei Tatsumoto | 2018-07-10 |
| 9929686 | Controller for permanent magnet synchronous motor, image forming apparatus, and control method | Daichi Suzuki, Hiroyuki Yoshikawa, Yasuhiro KOIDE | 2018-03-27 |
| 9893675 | Motor control device and image forming apparatus including the same | Katsuhide Sakai, Yasuhiro KOIDE, Yuhei Tatsumoto | 2018-02-13 |
| 9632447 | Image forming apparatus having variable developing roller voltage change | Yuhei Tatsumoto, Katsuhide Sakai, Yasuhiro KOIDE | 2017-04-25 |
| 9533850 | Image forming apparatus | Hiroyuki Yoshikawa, Takaki Kato, Daichi Suzuki | 2017-01-03 |
| 9318985 | Image forming apparatus including motor that drives image forming apparatus, controller that controls motor, and sensor | Yuji Kobayashi, Hiroshi Yamaguchi | 2016-04-19 |
| 9056493 | Image forming apparatus which performs a cleaning operation to remove a film deposited in a motor | Yuji Kobayashi, Takaki Kato, Hiroshi Yamaguchi, Satoshi Teshima | 2015-06-16 |
| 8899581 | Image processing apparatus, rotation control method for motor, and computer-readable recording medium | Hiroshi Yamaguchi, Takaki Kato, Yuji Kobayashi, Satoshi Teshima | 2014-12-02 |
| 8639366 | Control apparatus and image forming apparatus | Norihiko Nakano, Hiroyuki Watanabe, Tomonobu Tamura | 2014-01-28 |
| 8629643 | Image forming apparatus having stepping motor arranged in conveying path for paper, and method for controlling stepping motor in image forming apparatus | Tomonobu Tamura, Hiroyuki Watanabe, Norihiko Nakano | 2014-01-14 |
| 7992868 | Image forming apparatus capable of detecting edge portion of sheet being fed | Yoshiyuki Toso, Yutaka Otsuka, Shoichi Tsuge | 2011-08-09 |
| 7913102 | Variable frequency clock output circuit and apparatus, motor driving apparatus, and image forming apparatus | Katsunori Takahashi, Toru Kasamatsu, Tomonobu Tamura, Norihiko Nakano | 2011-03-22 |
| 7209693 | Imaging apparatus and imaging method therefore | Teruhiko Fujikura, Kou Yamada | 2007-04-24 |