Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8905908 | Lubricant supplying method, supporting member and rotatable member unit | Jun Miyamoto, Kenji Matsuda, Akira Higeta | 2014-12-09 |
| 8521041 | Image forming apparatus with controller controlling an image forming operation | Katsuhiro Kojima, Kenji Matsuda, Masaki Ojima | 2013-08-27 |
| 8078071 | Image forming apparatus and control method of the image forming apparatus | Katsuhiro Kojima, Kenji Matsuda, Hideki Matsumoto, Masaki Ojima | 2011-12-13 |
| 7627269 | Image forming apparatus with charging member cleaning capabilities | Kenji Matsuda, Masaki Ojima, Katsuhiro Kojima, Hideki Matsumoto | 2009-12-01 |
| 7254347 | Electrophotographic image forming apparatus and unit | Hideki Matsumoto, Masaki Ojima, Kenji Matsuda, Katsuhiro Kojima | 2007-08-07 |
| 7120376 | Image forming apparatus featuring a four-step image bearing member controller | Masanobu Saito, Kazuhiro Okubo, Jun Haruna, Kazuhisa Maruyama, Yoshihiro Ito | 2006-10-10 |
| 6961527 | Method of detecting life of image bearing member, image forming apparatus and cartridge | Yasuyuki Ishii | 2005-11-01 |
| 6771924 | Image forming apparatus having different modes for preventing defective cleaning | — | 2004-08-03 |
| 6704524 | Method of detecting life of image bearing member, image forming apparatus and cartridge | Yasuyuki Ishii | 2004-03-09 |
| 6654568 | Image forming apparatus, image bearing member life detecting method, and process cartridge detachably attachable to image forming apparatus | — | 2003-11-25 |
| 6577823 | Method of detecting life of image bearing member, image forming apparatus and cartridge | Yasuyuki Ishii | 2003-06-10 |
| 6549733 | Image forming apparatus, image bearing member life detecting method, and process cartridge detachably attachable to image forming apparatus | — | 2003-04-15 |
| 6493534 | Sheet conveying apparatus and image forming apparatus | Kei Sawanaka, Masao Ando, Takayasu Yuminamochi, Tomio Noguchi, Masaru Shimura +1 more | 2002-12-10 |
| 6427054 | Image forming apparatus indicating the residue of toner and the deficiency of toner | Masaharu Ohkubo | 2002-07-30 |
| 5682576 | Fixing device | Hiroaki Sakai, Masaharu Ohkubo, Norio Hashimoto, Takayasu Yuminamochi, Hiroto Hasegawa +2 more | 1997-10-28 |
| 5521683 | Image forming apparatus using constant voltage or constant current AC signal applied to developer bearing member, and control function in accordance with detected voltage or current of developer bearing member | Toshio Miyamoto, Akihiko Takeuchi, Katsuhiko Nishimura, Kazuaki Ono | 1996-05-28 |