Issued Patents All Time
Showing 1–25 of 44 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9864307 | Image forming apparatus with a controller to set transfer bias | Kenji Sengoku, Hiroyoshi Haga, Tomokazu Takeuchi, Yasunobu Shimizu, Junpei Fujita | 2018-01-09 |
| 9488937 | Image forming apparatus | Shinya Tanaka, Hirokazu Ishii, Yasunobu Shimizu, Keigo Nakamura | 2016-11-08 |
| 9323170 | Image forming apparatus with a controller to set transfer bias | Kenji Sengoku, Hiroyoshi Haga, Tomokazu Takeuchi, Yasunobu Shimizu, Junpei Fujita | 2016-04-26 |
| 9291955 | Image forming apparatus and transfer bias application device therein | Keigo Nakamura, Yasunobu Shimizu, Hirokazu Ishii, Shinya Tanaka | 2016-03-22 |
| 9291934 | Image forming apparatus | Yasunobu Shimizu, Hirokazu Ishii, Shinya Tanaka, Keigo Nakamura | 2016-03-22 |
| 9195179 | Transfer device and image forming apparatus including same | Yasunobu Shimizu, Shinya Tanaka, Hirokazu Ishii, Keigo Nakamura | 2015-11-24 |
| 9164462 | Image forming apparatus | Keigo Nakamura, Hirokazu Ishii, Yasunobu Shimizu, Shinya Tanaka | 2015-10-20 |
| 9152070 | Transfer device and image forming apparatus | Tomokazu Takeuchi, Yasunobu Shimizu, Kenji Sengoku, Hiroyoshi Haga | 2015-10-06 |
| 9122207 | Image forming apparatus and transfer bias application device therein | Keigo Nakamura, Yasunobu Shimizu, Hirokazu Ishii, Shinya Tanaka | 2015-09-01 |
| 9075383 | Image forming apparatus | Kenji Sengoku, Hiroyoshi Haga, Yasunobu Shimizu, Tomokazu Takeuchi | 2015-07-07 |
| 9057991 | Image forming apparatus | Yasunobu Shimizu, Hiroyoshi Haga, Tomokazu Takeuchi, Kenji Sengoku, Junpei Fujita | 2015-06-16 |
| 9037022 | Image forming apparatus, image forming system, and transfer method | Tomokazu Takeuchi, Hiroyoshi Haga, Yasunobu Shimizu, Kenji Sengoku, Junpei Fujita | 2015-05-19 |
| 9031436 | Image forming apparatus | Yasunobu Shimizu, Hiroyoshi Haga, Tomokazu Takeuchi, Kenji Sengoku, Junpei Fujita | 2015-05-12 |
| 8977153 | Image forming apparatus which uses an AC voltage and/or a DC voltage at a transfer nip depending on a surface roughness of a recording sheet | Tomokazu Takeuchi, Yasunobu Shimizu, Kenji Sengoku, Hiroyoshi Haga, Shinya Tanaka | 2015-03-10 |
| 8948644 | Power supply module and image forming apparatus including same | Junpei Fujita, Tomokazu Takeuchi, Hiroyoshi Haga, Yasunobu Shimizu, Kenji Sengoku | 2015-02-03 |
| 8942604 | Image forming apparatus | — | 2015-01-27 |
| 8934822 | Transfer device and image forming apparatus | Ryuuichi Mimbu, Shinya Tanaka, Hirokazu Ishii, Yasunobu Shimizu, Keigo Nakamura +1 more | 2015-01-13 |
| 8929786 | Image forming apparatus, system, and method using a superimposed voltage signal and a direct voltage signal | Tomokazu Takeuchi, Hiroyoshi Haga, Yasunobu Shimizu, Kenji Sengoku, Junpei Fujita +1 more | 2015-01-06 |
| 8891996 | Power supply module and image forming apparatus including same | Junpei Fujita, Tomokazu Takeuchi, Hiroyoshi Haga, Yasunobu Shimizu, Kenji Sengoku | 2014-11-18 |
| 8824940 | Image forming apparatus including heat transmission member | Ken Yoshida | 2014-09-02 |
| 8824941 | Image transfer device and image forming apparatus incorporating same | Yasunobu Shimizu, Tomokazu Takeuchi, Hiroyoshi Haga, Kenji Sengoku | 2014-09-02 |
| 8805223 | Image forming apparatus, image forming system, and transfer method | Tomokazu Takeuchi, Hiroyoshi Haga, Yasunobu Shimizu, Kenji Sengoku, Junpei Fujita | 2014-08-12 |
| 8787806 | Image forming apparatus | Keigo Nakamura, Hirokazu Ishii, Yasunobu Shimizu, Shinya Tanaka | 2014-07-22 |
| 8755723 | Image forming apparatus and method of eliminating a charge on a recording medium by applying an AC voltage | — | 2014-06-17 |
| 8682231 | Image forming apparatus | Kenji Sengoku, Hiroyoshi Haga, Yasunobu Shimizu, Tomokazu Takeuchi | 2014-03-25 |