Issued Patents All Time
Showing 1–25 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8005403 | Image forming apparatus with movable developing unit | Takayuki Yamanaka, Masayasu Narimatsu, Hideji Saikoh, Junichi Saito | 2011-08-23 |
| 7702266 | Image forming apparatus provided with one-component development apparatus | Yuichi Kazaki, Hiroaki Nakaya, Takayuki Yamanaka | 2010-04-20 |
| 7689140 | Blade cleaning jig | Yohichi Takesawa, Fumito Mizoguchi | 2010-03-30 |
| 7567764 | Developing device having thickness regulating member and image forming apparatus | Takayuki Yamanaka, Yuichi Kazaki, Atsushi Inoue, Hiroaki Nakaya | 2009-07-28 |
| 7319828 | Developing agent detecting mechanism section of developing apparatus | Yohichi Takesawa, Shigeki Hayashi, Toshio Nishino | 2008-01-15 |
| 6907212 | Photoreceptor drum and image forming apparatus | Yoshikazu Harada, Toshio Yamanaka, Toshiaki Ino | 2005-06-14 |
| 6847791 | Image formation controlling method and image forming apparatus | Takashi Kitagawa, Kaori Dakeshita, Toshiaki Ino, Takayuki Yamanaka | 2005-01-25 |
| 6678491 | Optical electric charge removal device and image formation apparatus including the same | Toshiaki Ino, Takayuki Yamanaka, Toshio Yamanaka, Hideaki Kadowaki, Mitsuyoshi Terada +2 more | 2004-01-13 |
| 6459867 | Developing apparatus | Toshihide Ohgoshi, Shigeyuki Wakada, Atsushi Inoue, Takayuki Yamanaka, Masahiro Sakai +2 more | 2002-10-01 |
| 6431362 | Apparatus and method for packaging unit having toner storage | Hiroshige Araki, Toshihide Ohgoshi, Shigeyuki Wakada, Yoshinori Otsuka | 2002-08-13 |
| 6389260 | Tandem type color image forming device | Hiroshi Kataoka, Tadasu Taniguchi, Keizo Fukunaga, Jitsuo Masuda, Naoki Fukudo | 2002-05-14 |
| 6339686 | Developer unit with cleaning element | Takayuki Yamanaka, Atsushi Inoue, Mikie Kobayashi, Shigeyuki Wakada, Jitsuo Masuda +3 more | 2002-01-15 |
| 6308018 | Image forming apparatus | Hiroaki Yoshida, Jitsuo Masuda, Junji Morimoto, Masahiro Sakai, Atsushi Inoue +1 more | 2001-10-23 |
| 6253048 | Contact charging device | Hiroshi Ishii | 2001-06-26 |
| 6163675 | Image forming apparatus | Shigeyuki Wakada, Toshihide Ohgoshi | 2000-12-19 |
| 6094550 | Developing apparatus | Shigeyuki Wakada, Toshihide Ohgoshi, Yoshinori Ohtsuka, Hiroshige Araki, Yasuo Imai +2 more | 2000-07-25 |
| 6049689 | Developing apparatus with vibration absorbtion device | Hiroshi Ishii, Tetsuro Toyoshima, Takashi Sakai, Tadashi Iwamatsu, Hiroshi Tatsumi | 2000-04-11 |
| 5990924 | Image forming apparatus | Yuhi Yui, Shigeyuki Wakada, Toshihide Ohgoshi, Satoshi Murakami, Takahiro Kawakami | 1999-11-23 |
| 5794109 | Developing apparatus having recessed sections on developing roller | Toshihiro Ota, Shigeyuki Wakada, Keiji Katoh, Yuhi Yui | 1998-08-11 |
| 5778286 | Image forming apparatus and photoreceptor for use therein | Yuhi Yui, Toyokazu Mori, Mamoru Nozomi | 1998-07-07 |
| 5761589 | Detachable developing device for providing first and second voltages for an image forming apparatus | Toshihiro Ota, Shigeyuki Wakada, Yuhi Yui, Tokio Awata, Satoshi Murakami | 1998-06-02 |
| 5754925 | Imaging forming apparatus with enhanced cleaning of residual matter using a developing/cleaning device | Yuhi Yui, Katsumi Adachi, Takashi Hayakawa, Koichi Moriyama, Toyokazu Mori | 1998-05-19 |
| 5640651 | Developing device | Keiji Katoh, Hiroshige Araki, Yasuo Imai, Shigeyuki Wakada, Toshihiro Ota +1 more | 1997-06-17 |
| 5598252 | Electronic image forming apparatus with reduced residual carrier and toner attraction | Hideo Yamasa, Fumio Shimazu, Koichi Inui, Shirou Wakahara, Yuuhi Yui +1 more | 1997-01-28 |
| 5459555 | Electronic image forming apparatus | Hideo Yamasa, Fumio Shimazu, Koichi Inui, Shirou Wakahara, Yuuhi Yui +1 more | 1995-10-17 |