Issued Patents All Time
Showing 1–25 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11054762 | Powder container, process cartridge, and image forming apparatus | Kuniyori Takano, Emi Kita, Yasuhide Ohkubo | 2021-07-06 |
| 9864307 | Image forming apparatus with a controller to set transfer bias | Kenji Sengoku, Hiromi Ogiyama, Tomokazu Takeuchi, Yasunobu Shimizu, Junpei Fujita | 2018-01-09 |
| 9835987 | Image forming apparatus and transfer bias control | Kenji Sugiura, Hirokazu Ishii, Naohiro Kumagai, Seiichi Kogure, Junpei Fujita +5 more | 2017-12-05 |
| 9817341 | Image forming apparatus | Tatsuya Ohsugi, Kenji Sugiura, Hirokazu Ishii, Naohiro Kumagai, Seiichi Kogure +5 more | 2017-11-14 |
| 9811036 | Belt device and image forming apparatus including same | Junpei Fujita, Kenji Sugiura, Yuuji Wada, Seiichi Kogure, Naohiro Kumagai +1 more | 2017-11-07 |
| 9811046 | Image forming apparatus | Yuuji Wada, Naohiro Kumagai, Seiichi Kogure, Junpei Fujita, Kazuki Yogosawa +4 more | 2017-11-07 |
| 9766575 | Image forming apparatus | Tatsuya Ohsugi, Kenji Sugiura, Hirokazu Ishii, Yuuji Wada, Takehide Mizutani +5 more | 2017-09-19 |
| 9740156 | Image forming apparatus that adjusts a transfer bias according to surface properties of a transfer target | Yuuji Wada, Naohiro Kumagai, Seiichi Kogure, Junpei Fujita, Kazuki Yogosawa +4 more | 2017-08-22 |
| 9720355 | Image forming apparatus | Tatsuya Ohsugi, Kenji Sugiura, Jyunya Sakuraba, Hirokazu Ishii, Toshitaka Yamaguchi +7 more | 2017-08-01 |
| 9696662 | Cleaning device and image forming apparatus incorporating same | Kazuki Yogosawa, Mitsuru Takahashi, Kenji Sugiura, Naohiro Kumagai, Seiichi Kogure +5 more | 2017-07-04 |
| 9645530 | Image forming apparatus | Naoto Kochi, Kenji Sugiura, Hirokazu Ishii, Yuuji Wada, Takehide Mizutani +4 more | 2017-05-09 |
| 9632461 | Image forming apparatus controlling transfer bias based on temperature and humidity | Kenji Sugiura, Toshitaka Yamaguchi, Hirokazu Ishii, Shinya Tanaka, Takehide Mizutani +6 more | 2017-04-25 |
| 9519257 | Cleaning device and image forming apparatus incorporating same | Kenji Sengoku, Kazuki Yogosawa, Mitsuru Takahashi, Seiichi Kogure, Kenji Sugiura +4 more | 2016-12-13 |
| 9459564 | Image forming apparatus | Tatsuya Ohsugi, Kenji Sugiura, Jyunya Sakuraba, Hirokazu Ishii, Toshitaka Yamaguchi +7 more | 2016-10-04 |
| 9395658 | Image forming apparatus | Yuuji Wada, Naohiro Kumagai, Seiichi Kogure, Junpei Fujita, Kazuki Yogosawa +4 more | 2016-07-19 |
| 9323170 | Image forming apparatus with a controller to set transfer bias | Kenji Sengoku, Hiromi Ogiyama, Tomokazu Takeuchi, Yasunobu Shimizu, Junpei Fujita | 2016-04-26 |
| 9152070 | Transfer device and image forming apparatus | Hiromi Ogiyama, Tomokazu Takeuchi, Yasunobu Shimizu, Kenji Sengoku | 2015-10-06 |
| 9075383 | Image forming apparatus | Kenji Sengoku, Hiromi Ogiyama, Yasunobu Shimizu, Tomokazu Takeuchi | 2015-07-07 |
| 9057991 | Image forming apparatus | Yasunobu Shimizu, Tomokazu Takeuchi, Hiromi Ogiyama, Kenji Sengoku, Junpei Fujita | 2015-06-16 |
| 9037022 | Image forming apparatus, image forming system, and transfer method | Tomokazu Takeuchi, Yasunobu Shimizu, Hiromi Ogiyama, Kenji Sengoku, Junpei Fujita | 2015-05-19 |
| 9031436 | Image forming apparatus | Yasunobu Shimizu, Tomokazu Takeuchi, Hiromi Ogiyama, 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 | Hiromi Ogiyama, Tomokazu Takeuchi, Yasunobu Shimizu, Kenji Sengoku, Shinya Tanaka | 2015-03-10 |
| 8948644 | Power supply module and image forming apparatus including same | Junpei Fujita, Tomokazu Takeuchi, Hiromi Ogiyama, Yasunobu Shimizu, Kenji Sengoku | 2015-02-03 |
| 8929786 | Image forming apparatus, system, and method using a superimposed voltage signal and a direct voltage signal | Tomokazu Takeuchi, Yasunobu Shimizu, Hiromi Ogiyama, Kenji Sengoku, Junpei Fujita +1 more | 2015-01-06 |
| 8891996 | Power supply module and image forming apparatus including same | Junpei Fujita, Tomokazu Takeuchi, Hiromi Ogiyama, Yasunobu Shimizu, Kenji Sengoku | 2014-11-18 |