Issued Patents All Time
Showing 1–25 of 105 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12405554 | Developing device and image forming apparatus | Kenichi Tamaki, Hiroshi Yamazaki, Junichi Nakagawa, Takuji Watanabe | 2025-09-02 |
| 12346061 | Developing device provided with a toner trapping mechanism | Hiroshi Yamazaki, Kenichi Tamaki, Junichi Nakagawa, Takuji Watanabe | 2025-07-01 |
| 12092993 | Image forming apparatus | Kenichi Tamaki, Hiroshi Yamazaki, Junichi Nakagawa, Takuji Watanabe | 2024-09-17 |
| 12078958 | Image forming apparatus | Hiroshi Yamazaki, Junichi Nakagawa, Kenichi Tamaki, Takuji Watanabe | 2024-09-03 |
| 12055873 | Image forming apparatus and image formation method | Masashi Fujishima, Asami Sasaki, Eriko TAKEUCHI | 2024-08-06 |
| 12038710 | Image forming apparatus capable of accurately acquiring electrical resistance value of transfer member, electrical resistance value acquisition method | Ryota Okui, Yoshihiro Yamagishi, Kazuhiro Nakachi, Kazunori Tanaka | 2024-07-16 |
| 12007712 | Image forming apparatus | Junichi Nakagawa, Hiroshi Yamazaki, Kenichi Tamaki, Takuji Watanabe | 2024-06-11 |
| 11982965 | Image forming apparatus capable of acquiring potential value of exposed area on image-carrying member, potential value acquisition method | Kazunori Tanaka, Yoshihiro Yamagishi, Kazuhiro Nakachi, Ryota Okui | 2024-05-14 |
| 11977351 | Image forming apparatus | Takuji Watanabe, Junichi Nakagawa, Kenichi Tamaki, Hiroshi Yamazaki | 2024-05-07 |
| 11977350 | Image forming apparatus | Junichi Nakagawa, Hiroshi Yamazaki, Kenichi Tamaki, Takuji Watanabe | 2024-05-07 |
| 11914312 | Developing device and image forming apparatus including the same | Yuji Toyota, Yasuhiro Tauchi | 2024-02-27 |
| 11874615 | Developing device including developer carrying member and containing two-component developer and image forming apparatus including the developing device | Akihiro Watanabe, Ryo Yamada, Uto Syu, Yuji Toyota, Yasuhiro Tauchi | 2024-01-16 |
| 11782357 | Developing device and image forming apparatus including the same | Yuji Toyota, Yasuhiro Tauchi | 2023-10-10 |
| 11747747 | Image forming apparatus and control method of image forming apparatus | Yoshihiro Yamagishi, Kazunori Tanaka | 2023-09-05 |
| 11693350 | Image forming apparatus | Kazunori Tanaka, Yasuhiro Tauchi | 2023-07-04 |
| 11630400 | Image forming apparatus | Yoshihiro Yamagishi, Kazunori Tanaka | 2023-04-18 |
| 11592760 | Image forming apparatus that detects surface potential of image carrier with high accuracy | Kazunori Tanaka, Yoshihiro Yamagishi | 2023-02-28 |
| 11573501 | Image forming apparatus capable of calculating surface potential of image carrier based on development current | Yoshihiro Yamagishi, Kazunori Tanaka | 2023-02-07 |
| 11556074 | Image forming apparatus comprising image bearing member surface potential calculating section | Kazunori Tanaka, Yoshihiro Yamagishi | 2023-01-17 |
| 11487218 | Image forming apparatus that calculates surface potential of image carrier according to developing current | Yoshihiro Yamagishi, Kazunori Tanaka | 2022-11-01 |
| 11435677 | Image forming apparatus including a fogging toner amount estimation section | Kazunori Tanaka, Yoshihiro Yamagishi | 2022-09-06 |
| 11314183 | Developing device and image forming apparatus therewith | Masashi Fujishima, Norio Kubo, Asami Sasaki, Yasuhiro Tauchi, Akira Matayoshi +3 more | 2022-04-26 |
| 11307512 | Image forming apparatus determining toner replacement timing | Kazunori Tanaka, Kanako Morimoto, Kenichi Tamaki | 2022-04-19 |
| 11249415 | Image forming apparatus using two-component developer including toner and carrier that determines toner charge amount based on a developing current | Takahiro Okubo, Yohei Wakasa, Kazuhiro Nakachi | 2022-02-15 |
| 11209752 | Developing device and image forming apparatus therewith | Asami Sasaki, Akira Matayoshi, Norio Kubo, Koji Suenami, Yuji Toyota +2 more | 2021-12-28 |