Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9298127 | Developing device and image forming apparatus including same | Shin Murayama, Yasuhide Matsuno | 2016-03-29 |
| 8977150 | Image forming apparatus including a controller configured to regulate a potential difference between a photoconductor and a developing member | Shin Yamamoto, Shin Murayama, Yuji Nagatomo | 2015-03-10 |
| 7907871 | Image forming apparatus | Tetsumaru Fujita, Yuji Nagatomo | 2011-03-15 |
| 7903993 | Image forming apparatus | Tetsumaru Fujita, Yuji Nagatomo | 2011-03-08 |
| 7822356 | Image forming apparatus | Tetsumaru Fujita, Yuji Nagatomo | 2010-10-26 |
| 7796912 | Image forming method and apparatus which uses alternating voltage to form an electric field for moving toner | Tetsumaru Fujita, Yuji Nagatomo | 2010-09-14 |
| 7792463 | Image forming apparatus including a brush member to temporarily capture toner | Tetsumaru Fujita, Yuji Nagatomo | 2010-09-07 |
| 7751753 | Cleanerless image forming apparatus | Tetsumaru Fujita, Yuji Nagatomo | 2010-07-06 |
| 7738803 | Image forming method and apparatus for effectively charging an image carrier | Tetsumaru Fujita, Yuji Nagatomo | 2010-06-15 |
| 7725054 | Electrifying apparatus, a processing unit, and an image formation apparatus | Tetsumaru Fujita, Yuji Nagatomo | 2010-05-25 |
| 7697875 | Development device for developing an electrostatic latent image formed on an image carrying member into a visible image | Yoshiko Ogawa | 2010-04-13 |
| 7693459 | Charging device for charging a surface of a latent image bearing member and an image forming apparatus including the charging device | Tetsumaru Fujita, Yuji Nagatomo | 2010-04-06 |
| 7684732 | Process unit and image forming apparatus including the same | Tetsumaru Fujita, Yuji Nagatomo | 2010-03-23 |
| 7664433 | Cleaning of a charging member in an image forming apparatus | Tetsumaru Fujita, Yuji Nagatomo | 2010-02-16 |
| 7263317 | Particle discharge apparatus and image forming apparatus | Hiroshi Kubota, Yasuyuki Ishiguro, Takeshi Takayama, Jun Yamaguchi | 2007-08-28 |
| 6136487 | Developing method | Tamotsu Shimizu, Noboru Ito, Yoshiyuki Iguchi | 2000-10-24 |
| 5999782 | Developing device having an AC current with two frequencies and method of using same | Yoshiyuki Iguchi, Tamotsu Shimizu | 1999-12-07 |
| 5884131 | Developing device which accomplishes development using the action of an alternating current field between a developer-carrying member and an image-carrying member | Tamotsu Shimizu, Yoshiyuki Iguchi | 1999-03-16 |
| 5860040 | Developing apparatus having stop period during which no AC electric field is exerted between developer carrying member and image carrying member | Tamotsu Shimizu, Yoshiyuki Iguchi | 1999-01-12 |
| 5724641 | Image forming apparatus comprising a stapler relatively movable in the positions of the original discharge tray and the sheet discharge trays | Yoshihiro Shojo, Shizuo Yuge, Keichi Kinoshita | 1998-03-03 |