Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9720355 | Image forming apparatus | Tatsuya Ohsugi, Kenji Sugiura, Jyunya Sakuraba, Hirokazu Ishii, Hiroyoshi Haga +7 more | 2017-08-01 |
| 9632461 | Image forming apparatus controlling transfer bias based on temperature and humidity | Kenji Sugiura, Hiroyoshi Haga, Hirokazu Ishii, Shinya Tanaka, Takehide Mizutani +6 more | 2017-04-25 |
| 9459564 | Image forming apparatus | Tatsuya Ohsugi, Kenji Sugiura, Jyunya Sakuraba, Hirokazu Ishii, Hiroyoshi Haga +7 more | 2016-10-04 |
| 8270875 | Image forming apparatus | Junpei Fujita, Ryoh Tanoue, Masaharu Furuya, Takuya Sekine, Katsuhito Haruno | 2012-09-18 |
| 8175479 | Transfer device and image forming apparatus having first and second transfer nips and first and second contacting members which apply transfer biases | Kazuchika Saeki, Masaharu Furuya, Takahiro Nakayama, Takuya Sekine | 2012-05-08 |
| 8086155 | Transfer device and image forming apparatus including same | Kazuchika Saeki, Masaharu Furuya, Takuya Sekine | 2011-12-27 |
| 7929877 | Transfer device and image forming apparatus having at least two contacting members applied with corresponding transfer biases | Kazuchika Saeki, Masaharu Furuya, Takahiro Nakayama, Takuya Sekine | 2011-04-19 |
| 7813683 | Belt detaching device and image forming apparatus including belt detaching device | Masaharu Furuya, Kazuchika Saeki, Takahiro Nakayama, Takuya Sekine | 2010-10-12 |
| 7657196 | Compact image forming apparatus with a moveable optical sensor | Masaharu Furuya, Takahiro Nakayama | 2010-02-02 |
| 6266501 | Image-forming apparatus having a seal for a developer and a method for detecting a removal of the seal | Haruji Mizuishi, Masaru Tanaka, Kenzo Tatsumi, Ken Amemiya, Hideki Zemba +3 more | 2001-07-24 |
| 6148161 | Image forming apparatus with improved toner density control | Noriyuki Usui, Ken Amemiya, Haruji Mizuishi, Mayumi Ohori, Masaru Tanaka +3 more | 2000-11-14 |
| 6144822 | Image forming apparatus having detachable transfer roller and discharge device | Masaru Tanaka, Hiroshi Mizusawa, Kenzo Tatsumi, Ken Amemiya, Haruji Mizuishi +3 more | 2000-11-07 |
| 6055388 | Image forming apparatus and method for obtaining appropriate toner density | Shigeru Watanabe, Masaru Tanaka, Haruji Mizuishi, Kenzou Tatsumi, Takeo Suda +3 more | 2000-04-25 |
| 6006050 | Image forming method and apparatus for controlling amount of supplied toner or agitating time | Shigeru Watanabe, Masaru Tanaka, Haruji Mizuishi, Kenzou Tatsumi, Hiroshi Yoshinaga +3 more | 1999-12-21 |
| 5923935 | Image forming apparatus with a folding transfer device support member | — | 1999-07-13 |
| 5915143 | Image forming apparatus and method for automatically adjusting toner density in response to humidity variations | Shigeru Watanabe, Masaru Tanaka, Haruji Mizuishi, Hiroshi Yoshinaga, Kenzo Tatsumi +3 more | 1999-06-22 |
| 5887224 | Image forming device with improved mixing of circulated developer with replensihed toner | Haruji Mizuishi, Masaru Tanaka, Shigeru Watanabe, Kenzo Tatsumi, Takeo Suda +3 more | 1999-03-23 |
| 5815767 | Image forming apparatus | Akio Kutsuwada, Masaru Tanaka, Takeo Suda, Mitsuru Sato, Kenzou Tatsumi | 1998-09-29 |
| 5697020 | Image forming apparatus for moving a charging roller towards and away from a photoreceptor and a cleaning member for the charging roller | Mitsuru Sato, Akio Kutsuwada, Takeshi Saito | 1997-12-09 |
| 5678125 | Image forming apparatus | Akio Kutsuwada, Masaru Tanaka, Takeo Suda, Mitsuru Sato, Kenzou Tatsumi | 1997-10-14 |
| 5400127 | Toner recovery system which detects linear movement of a recovered toner transporter | Makoto Arai, Yasushi Koichi, Yoshiyuki Tanimoto | 1995-03-21 |
| 5396319 | Cleaning device for an image forming apparatus | Masaki Tokuhashi, Makoto Arai, Masato Yanagida, Hiroshi Ono | 1995-03-07 |