Issued Patents All Time
Showing 1–25 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7272342 | Image forming apparatus having a detachable cartridge including a photoconductive drum with axis shaft having a minimal rotational eccentricity, and a method of assembling the image forming apparatus | Hiroyuki Nagashima, Katsumi Masuda, Hideki Kimura, Kiyotaka Sakai, Kazuhisa Sudo +1 more | 2007-09-18 |
| 7212773 | Image forming apparatus | Kazuhisa Sudo, Hideo Yoshizawa, Katsumi Masuda, Hideki Kimura, Kiyotaka Sakai +1 more | 2007-05-01 |
| 7043182 | Developer regulating member, developing device, electrophotographic image forming process cartridge, and image forming apparatus including the developer regulating member | Kiyotaka Sakai, Junichi Terai, Kazuhisa Sudo, Katsumi Masuda, Hiroyuki Nagashima +1 more | 2006-05-09 |
| 6925277 | Developing device using a developer carrier formed with grooves and image forming apparatus including the same | — | 2005-08-02 |
| 6763214 | Developing device and method for performing effective charging and mixing of developer and image forming apparatus using the developing device | — | 2004-07-13 |
| 6751433 | Developing device and image forming apparatus using the same | — | 2004-06-15 |
| 6615014 | Method and apparatus for image forming capable of performing an effective mixing of development agent | — | 2003-09-02 |
| 6336020 | Image forming apparatus having an improved developer-supplying mechanism and method thereof | Tomoji Ishikawa, Yoshiyuki Kimura, Kenji Maeda, Yoshihide Kawamura, Fumio Ogata | 2002-01-01 |
| 6226481 | Image forming apparatus with control over developing unit during an idle running of an intermediate image transfer body | Takuzi Yoneda, Takayuki Maruta | 2001-05-01 |
| 6122469 | Image forming apparatus including a preventing mechanism for preventing a developing unit from rotating | Tetsuro Miura, Satoshi Hatori, Tomoji Ishikawa, Yoshiyuki Kimura, Kenji Maeda | 2000-09-19 |
| 6104900 | Image forming apparatus having an improved developer-supplying mechanism and method thereof | Tomoji Ishikawa, Yoshiyuki Kimura, Kenji Maeda, Yoshihide Kawamura, Fumio Ogata | 2000-08-15 |
| 6072967 | PC drum integrated revolving type developing unit with pull-out supporter | Tomoji Ishikawa, Yoshiyuki Kimura, Kenji Maeda | 2000-06-06 |
| 6070037 | Image forming apparatus having improved developer limiting member | Tomoji Ishikawa, Yoshiyuki Kimura, Kenji Maeda | 2000-05-30 |
| 5991569 | PC drum integrated revolving type developing unit with pull-out supporter | Tomoji Ishikawa, Yoshiyuki Kimura, Kenji Maeda | 1999-11-23 |
| 5956549 | Rotary developing device for an image forming apparatus | Tomoji Ishikawa, Katsuhiro Kosuge | 1999-09-21 |
| 5940664 | Agitation and charging device for an image forming apparatus | Tomoji Ishikawa, Katsuhiro Kosuge | 1999-08-17 |
| 5850586 | Rotary developing device for an image forming apparatus | Tomoji Ishikawa, Katsuhiro Kosuge | 1998-12-15 |
| 5826146 | Color image forming device which changes developing bias when switching between developer units | Takayuki Maruta, Hiroshi Takashima, Tomoji Ishikawa, Shinji Kato, Katsuhiro Kosuge | 1998-10-20 |
| 5787328 | Rotary developing device for an image forming apparatus | Tomoji Ishikawa, Katsuhiro Kosuge | 1998-07-28 |
| 5768662 | Toner supply cartridge for rotary developing device | Katsuhiro Kosuge | 1998-06-16 |
| 5768664 | Toner container for a rotary developing device | Katsuhiro Kosuge, Tomoji Ishikawa, Shinji Kato | 1998-06-16 |
| 5765059 | Developing device for image forming apparatus and toner container therefor | Katsuhiro Kosuge, Tomoji Ishikawa | 1998-06-09 |
| 5761576 | Image forming apparatus for supplying power to members of a rotary developing device | Tomoji Ishikawa, Katsuhiro Kosuge | 1998-06-02 |
| 5758235 | Toner container for a rotary developing device | Katsuhiro Kosuge, Tomoji Ishikawa, Shinji Kato | 1998-05-26 |
| 5671470 | Color image forming device which changes developing bias when switching between developer units | Takayuki Maruta, Hiroshi Takashima, Tomoji Ishikawa, Shinji Kato, Katsuhiro Kosuge | 1997-09-23 |