Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11009822 | Powder detection device and toner replenishment device | — | 2021-05-18 |
| 10488786 | Development device and image forming apparatus including the development device | SHOHEI FUKUMOTO, Hiroo Naoi | 2019-11-26 |
| 8923715 | Image forming apparatus and image forming method | Kiyofumi Morimoto, Takeshi Ohkawa, Tomoki Minamikawa | 2014-12-30 |
| 8867934 | Method for judging toner shortage and image forming apparatus | Kazuma Hinoue, Hideji Saikoh | 2014-10-21 |
| 8660448 | Image forming apparatus and image forming method | Masayuki Otsuka, Takashi Kitagawa | 2014-02-25 |
| 8634730 | Image forming apparatus and image forming method using the same | Kazuma Hinoue, Hideji Saikoh, Takeshi Ohkawa | 2014-01-21 |
| 8406641 | Image forming apparatus and toner supply method | Kazuma Hinoue, Masayasu Narimatsu, Kohichi Takenouchi, Hideji Saikoh, Takeshi Ohkawa +3 more | 2013-03-26 |
| 8295740 | Developing device, image forming apparatus, and cleaning method for the developing device | Takeshi Ohkawa, Mitsuru Tokuyama | 2012-10-23 |
| 8233811 | Image stabilizing apparatus and image forming apparatus | Syouichi Fujita, Mitsuhiro Murata, Toshiaki Fujisawa, Masaya Fujitani | 2012-07-31 |
| 7697854 | Image forming apparatus with variable process speed | Syouichi Fujita, Mitsuhiro Murata | 2010-04-13 |
| 7619791 | Image forming method and image forming device | Syouichi Fujita, Hirofumi Sakita, Shuichi Morikuni | 2009-11-17 |
| 7450867 | Image forming apparatus, toner density control method, toner density control program and storage medium for storing the program | Hiroshi Ishii | 2008-11-11 |
| 7356268 | Developing device | — | 2008-04-08 |
| 6488353 | Image forming apparatus diagnosing print head and optical system conditions based on printed test pattern | Michiyuki Suzuki, Yoshio Mizuyama | 2002-12-03 |
| 5839018 | Toner density control for an image forming apparatus | Masato Asanuma, Toshiaki Ino, Kanshiro Okamoto, Hideji Saiko, Toshihisa Ishida +8 more | 1998-11-17 |
| 5826136 | Image stabilizing method for use in an image forming apparatus | Hideji Saiko, Jitsuo Masuda, Toshihisa Ishida, Katsuhiro Nagayama, Hiroo Naoi +2 more | 1998-10-20 |
| 5532794 | Electrophotographic image stabilization control apparatus | Mitsuru Tokuyama, Toshiaki Ino, Kunio Ohashi, Haruo Nishiyama | 1996-07-02 |
| 5402209 | Electrophotographic reproduction apparatus controllable toner density and method thereof for controlling an electrophotographic reproduction process | Mitsuru Tokuyama, Toshiaki Ino, Kunio Ohashi | 1995-03-28 |