Issued Patents All Time
Showing 1–25 of 43 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9651910 | Image forming apparatus incorporating line sensor | Akio Kosuge, Natsumi Matsue, Keiko Matsumoto, Akira Yoshida, Yoichi Sakurai +2 more | 2017-05-16 |
| 9625865 | Image forming apparatus and control method for image forming apparatus | Natsumi Matsue, Kayoko Tanaka | 2017-04-18 |
| 9606469 | Image forming apparatus and charging bias adjusting method therefor | Saki Izumi, Hiroyuki Sugiyama, Shunichi Hashimoto, Naoyuki Ozaki, Mikio Ishibashi +1 more | 2017-03-28 |
| 9442420 | Image forming apparatus and image forming method | Akira Yoshida, Kayoko Tanaka, Natsumi Matsue, Kazufumi Kimura | 2016-09-13 |
| 9436135 | Toner pattern density correction in an image forming apparatus | Keita Sone, Nobutaka Takeuchi, Shinichi Akatsu, Tomohide Takenaka, Tetsuya Muto +4 more | 2016-09-06 |
| 9031428 | Image forming apparatus capable of determining a toner adhesion quantity | Kayoko Tanaka, Keita Sone | 2015-05-12 |
| 8942584 | Image forming apparatus and image forming method | Kayoko Tanaka, Keita Sone | 2015-01-27 |
| 8942586 | Image forming apparatus using a plurality of toner patches during a non-printing period | Kayoko Tanaka, Keita Sone | 2015-01-27 |
| 8811846 | Optical sensor with positioning reference surface and image forming apparatus incorporating optical sensor | Akira Yoshida, Hitoshi Ishibashi, Yoshiaki Miyashita, Nobutaka Takeuchi, Kayoko Tanaka | 2014-08-19 |
| 8503893 | Image forming apparatus and method for controlling image density | Akira Yoshida, Nobutaka Takeuchi, Shin Hasegawa, Yoshiaki Miyashita, Kayoko Tanaka | 2013-08-06 |
| 8455851 | Optical sensor and image forming apparatus | Kayoko Tanaka, Shin Hasegawa, Yoshiaki Miyashita, Nobutaka Takeuchi, Akira Yoshida | 2013-06-04 |
| 8233813 | Image forming apparatus and image-density control method | Akira Yoshida, Shin Hasegawa, Hitoshi Ishibashi, Yoshiaki Miyashita, Nobutaka Takeuchi +4 more | 2012-07-31 |
| 8175471 | Image forming apparatus and image density control method | Kentaroh Tomita, Nobutaka Takeuchi, Hitoshi Ishibashi, Shin Hasegawa, Shinji Kato +2 more | 2012-05-08 |
| 8155543 | Image forming apparatus capable of reducing a lengthy duration of an adjustment control | Hitoshi Ishibashi, Osamu Ariizumi, Shinji Kobayashi, Kazumi Kobayashi, Fukutoshi Uchida +8 more | 2012-04-10 |
| 8145100 | Process cartridge including developing unit and incorporated in image forming apparatus | Yushi Hirayama, Shinji Kato, Takeroh Kurenuma, Keiichi Yoshida, Shin Hasegawa +6 more | 2012-03-27 |
| 8103181 | Image forming apparatus and method of adjusting charge bias | Hitoshi Ishibashi, Shin Hasegawa, Yushi Hirayama, Nobutaka Takeuchi, Shinji Kato +5 more | 2012-01-24 |
| 8099006 | Image forming apparatus and image quality correction method used therein | Shin Hasegawa, Nobutaka Takeuchi, Hitoshi Ishibashi, Kayoko Tanaka, Yushi Hirayama | 2012-01-17 |
| 8095025 | Image forming apparatus capable of efficient toner concentration control | Hitoshi Ishibashi, Shin Hasegawa, Nobutaka Takeuchi, Kayoko Tanaka, Yushi Hirayama +2 more | 2012-01-10 |
| 8045874 | Image forming apparatus and image density control method | Akira Yoshida, Shin Hasegawa, Hitoshi Ishibashi, Yoshiaki Miyashita, Nobutaka Takeuchi +3 more | 2011-10-25 |
| 8027605 | Image forming apparatus and image density control method | Nobutaka Takeuchi, Shin Hasegawa, Hitoshi Ishibashi, Shuji Hirai, Kayoko Tanaka +2 more | 2011-09-27 |
| 8009997 | Toner replenishment determination device of an image forming apparatus | Osamu Ariizumi, Kazumi Kobayashi, Shinji Kobayashi, Fukutoshi Uchida, Takashi Enami +8 more | 2011-08-30 |
| 7929873 | Image forming apparatus and image density control method | Nobutaka Takeuchi, Shin Hasegawa, Hitoshi Ishibashi, Shuji Hirai, Kayoko Tanaka +4 more | 2011-04-19 |
| 7903986 | Reuse method and a reusable device for an image forming apparatus having a first process linear velocity and a second image processing apparatus having a second process linear velocity | Kayoko Tanaka, Shin Hasegawa, Hitoshi Ishibashi, Shuji Hirai, Nobutaka Takeuchi +2 more | 2011-03-08 |
| 7885556 | Image forming apparatus for correcting a toner density target value | Shin Hasegawa, Nobutaka Takeuchi, Hitoshi Ishibashi, Yushi Hirayama, Naoto Watanabe +8 more | 2011-02-08 |
| 7881629 | Image forming apparatus and image density control method | Nobutaka Takeuchi, Hitoshi Ishibashi, Kayoko Tanaka, Yushi Hirayama, Naoto Watanabe | 2011-02-01 |