Issued Patents 2021
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11209744 | Image forming apparatus having cartridge and exposure device | Masahito Saeki, Toshiyuki Sano, Kotaro Haruta, Shoichiro Nishimura | 2021-12-28 |
| 11181857 | Image forming apparatus moving developing rollers toward and away from corresponding photosensitive drums based on sheet interval between two sheets | Yusuke Ikegami, Masahito Saeki, Toshiyuki Sano | 2021-11-23 |
| 11163258 | Image forming apparatus having movable developing roller with bidirectionally-rotatable cam | Toshiyuki Sano, Yusuke Ikegami | 2021-11-02 |
| 11144001 | Image forming apparatus having moving mechanisms to move developing rollers to be in contact with and separated from photosensitive drums | Toshiyuki Sano, Masahito Saeki | 2021-10-12 |
| 11137718 | Image-forming apparatus capable of moving developing roller between contact position in contact with photosensitive drum and separated position away therefrom | Masahito Saeki, Yusuke Ikegami, Toshiyuki Sano | 2021-10-05 |
| 11106155 | Image-forming apparatus with reduced number of motors for moving developing rollers and altering rotation speed ratio of developing rollers to photosensitive drums | Toshiyuki Sano, Masahito Saeki | 2021-08-31 |
| 11079714 | Image forming apparatus including common drive source for driving developing roller and cam that moves developing roller toward and away from photosensitive drum | Yusuke Ikegami, Masahito Saeki, Toshiyuki Sano | 2021-08-03 |
| 11067933 | Image forming apparatus providing cartridge replacement notification | — | 2021-07-20 |
| 11009806 | Image-forming apparatus including cam and cam follower for moving developing roller toward and away from photosensitive drum | Masahito Saeki, Toshiyuki Sano | 2021-05-18 |
| 10990032 | Image-forming apparatus capable of controlling separation/contact timing between developing rollers and photosensitive drums in timed relation to sheet conveyance | Toshiyuki Sano, Masahito Saeki | 2021-04-27 |
| 10969737 | Image forming apparatus and method for ensuring adequate torque of development motor and suppressing reduction in printing speed in low-temperature environment | Kotaro Haruta, Masahito Saeki | 2021-04-06 |
| 10955790 | Image forming apparatus | Toshiyuki Sano, Masahito Saeki | 2021-03-23 |