Issued Patents All Time
Showing 26–41 of 41 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |
| 10859940 | Image forming apparatus with developing cartridges having increased toner capacities and reducible of contact duration between developing rollers and photosensitive drums | Masahito Saeki, Toshiyuki Sano, Kotaro Haruta, Shoichiro Nishimura | 2020-12-08 |
| 10562327 | Image forming apparatus and image forming system including clutch and controller which controls whether clutch allows drive force to be transmitted to driving member | Yohei Hashimoto | 2020-02-18 |
| 10399366 | Recording apparatus | — | 2019-09-03 |
| 9757964 | Recording apparatus | — | 2017-09-12 |
| 9751343 | Recording apparatus | — | 2017-09-05 |
| 9261830 | Image-forming apparatus for controlling speed of fan based on detected temperature | Kaoru Suzuki | 2016-02-16 |
| 8817291 | Image forming apparatus for selectively powering a user authentication device | Hiroyuki Yamamoto | 2014-08-26 |