Issued Patents All Time
Showing 1–25 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12222664 | Developing device, process cartridge, and image forming apparatus including an entrance seal which contacts an image bearer | Kei Saito, Masaki Takahashi, Yuuki Tsuchiya | 2025-02-11 |
| 11835887 | Developer accommodating device with screw including screw blade as rotator, developing device, process cartridge, and image forming apparatus | Yuuki Tsuchiya, Tomohiro Kubota, Shuntaroh Tamaki, Ryusuke Mase | 2023-12-05 |
| 11275325 | Image forming apparatus including a process cartridge that includes a developing device | Hotaru HASHIKAWA, Nobuo Takami, Ryusuke Mase, Kazuki Yogosawa, Tomohiro Kubota +2 more | 2022-03-15 |
| 11256194 | Developing device, process cartridge, and image forming apparatus | Yuuki Tsuchiya, Yuki Oshikawa, Ryusuke Mase, Naohiro Kawashima, Hotaru HASHIKAWA | 2022-02-22 |
| 11112731 | Developer container, developing device, and image forming apparatus | Naohiro Kawashima, Yuki Oshikawa, Yuuki Tsuchiya, Ryusuke Mase, Tsutomu Iwata | 2021-09-07 |
| 11086251 | Image forming apparatus including control circuitry to execute a warm-up operation | Ryusuke Mase, Yuki Oshikawa, Naohiro Kawashima, Yuuki Tsuchiya | 2021-08-10 |
| 10705484 | Developing device, process cartridge, and image forming apparatus | Yuki Oshikawa, Naohiro Kawashima, Ryusuke Mase, Yuuki Tsuchiya | 2020-07-07 |
| 9897947 | Image forming apparatus executing charge removal for photoconductor thereof and control method for same | Yuka Kanatani, Yuushi Hirayama, Kazufumi Kimura, Ryota Kidera, Masanori MORO +1 more | 2018-02-20 |
| 9772579 | Developing device and image forming apparatus incorporating same | Yuki Oshikawa, Akira Azami, Yoshiko Ogawa, Masaaki Yamada, Noriyuki Kimura +6 more | 2017-09-26 |
| 9625851 | Developing device and image forming apparatus incorporating same | Yuki Oshikawa, Akira Azami, Yoshiko Ogawa, Masaaki Yamada, Noriyuki Kimura +6 more | 2017-04-18 |
| 9405223 | Developing device, image forming apparatus, and process cartridge | Yuki Oshikawa, Noriyuki Kimura, Kenji Kikuchi, Shuntaroh Tamaki | 2016-08-02 |
| 9176430 | Developing device and image forming apparatus incorporating same | Hideo Yoshizawa, Noriyuki Kimura, Yuki Oshikawa, Sohichi Abe | 2015-11-03 |
| 8971769 | Development device including a removable seal to seal a supplied-developer and/or a collected-developer communicating area | Yasuo Miyoshi, Norio Kudo, Tsukuru Kai, Hiroshi Hosokawa, Hiroaki Okamoto | 2015-03-03 |
| 8953987 | Development device, and process cartridge and image forming apparatus including same | Hideki Kimura, Kunihiro Ohyama, Masayuki Yamane, Masaki Takahashi, Toshiki Hayashi | 2015-02-10 |
| 8909095 | Process cartridge for image forming apparatus including a hollow alignment shaft | Masayuki Yamane, Kunihiro Ohyama, Hideki Kimura, Masaki Takahashi, Toshiki Hayashi | 2014-12-09 |
| 8873979 | Development device, process cartridge, and image forming apparatus incorporating same | Kunihiro Ohyama, Masayuki Yamane, Hideki Kimura, Masaki Takahashi, Toshiki Hayashi | 2014-10-28 |
| 8855536 | Development device, and process cartridge and image forming apparatus including same in which an angle formed using an end face of a buffer area is smaller than an angle of twist of a spiral blade | Hideki Kimura, Kunihiro Ohyama, Masayuki Yamane, Masaki Takahashi, Toshiki Hayashi | 2014-10-07 |
| 8816310 | Semiconductor relay | Narutoshi Hoshino, Takashi Shibano, Shinsuke Taka | 2014-08-26 |
| 8750752 | Development device including a removable seal to seal a supplied-developer and/or a collected-developer communicating area | Yasuo Miyoshi, Norio Kudo, Tsukuru Kai, Hiroshi Hosokawa, Hiroaki Okamoto | 2014-06-10 |
| 8649714 | Development device, process cartridge, and image forming apparatus including same | Norio Kudo, Yasuo Miyoshi, Hiroshi Hosokawa, Hiroaki Okamoto | 2014-02-11 |
| 8571449 | Development device, process cartridge, and image forming apparatus | Yasuo Miyoshi, Norio Kudo, Tsukuru Kai, Hiroshi Hosokawa, Hiroaki Okamoto | 2013-10-29 |
| 8457516 | Image forming apparatus and method using an environment detector which changes a test toner image based on a detection result | — | 2013-06-04 |
| 8433224 | Development device, process cartridge including same, and image forming apparatus including same | Yasuo Miyoshi, Hiroshi Hosokawa, Norio Kudo, Hiroaki Okamoto | 2013-04-30 |
| 8326180 | Development device, process cartridge, and image forming apparatus | Yasuo Miyoshi, Takuya Seshita, Norio Kudo | 2012-12-04 |
| 8326184 | Development device and image forming apparatus | Norio Kudo, Yasuo Miyoshi, Hiroshi Hosokawa, Hiroaki Okamoto | 2012-12-04 |