Issued Patents All Time
Showing 1–25 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12055873 | Image forming apparatus and image formation method | Tamotsu Shimizu, Asami Sasaki, Eriko TAKEUCHI | 2024-08-06 |
| 12044995 | Image forming apparatus capable of determining failure timing of a gear used therein, and determining method of the failure timing | Koji Suenami, Norio Kubo | 2024-07-23 |
| 11714366 | Image forming apparatus | Norio Kubo | 2023-08-01 |
| 11314183 | Developing device and image forming apparatus therewith | Norio Kubo, Asami Sasaki, Yasuhiro Tauchi, Tamotsu Shimizu, Akira Matayoshi +3 more | 2022-04-26 |
| 11209752 | Developing device and image forming apparatus therewith | Asami Sasaki, Akira Matayoshi, Norio Kubo, Koji Suenami, Yuji Toyota +2 more | 2021-12-28 |
| 11112732 | Image forming device | Tamotsu Shimizu, Yasuhiro Tauchi, Akira Matayoshi | 2021-09-07 |
| 11048192 | Image forming apparatus capable of suppressing occurrence of image defects in response to difference in carrier resistance and obtaining high image quality | Yuji Toyota, Yasuhiro Tauchi, Norio Kubo, Akira Matayoshi | 2021-06-29 |
| 10345741 | Developing device and image forming apparatus including same | Norio Kubo, Junichi Nakagawa, Asami Sasaki | 2019-07-09 |
| 9535356 | Image forming apparatus having a function to apply charge removal light to photosensitive member | Shinji Otani, Norio Kubo, Koji Suenami, Yoshimi Shimizu, Kenichi Tamaki | 2017-01-03 |
| 9304445 | Developing roller, developing device, image forming apparatus, and manufacturing method of developing roller | Yuji Kamiyama, Tamotsu Shimizu, Shizuka Okada, Sakae Saito, Yasuhiro Oishi | 2016-04-05 |
| 9298126 | Developing device and image forming apparatus including the same | Tamotsu Shimizu, Akihiro Watanabe, Chikara Ishihara, Yasuhiro Tauchi, Yu Sasaki +3 more | 2016-03-29 |
| 9285713 | Developing device, and image forming apparatus provided with the same | Sakae Saito, Hiroaki Sakai, Yukimasa Watanabe, Yasuhiro Oishi, Chikara Ishihara +1 more | 2016-03-15 |
| 9217951 | Image forming apparatus with leakage detecting unit for detecting leakage | Yoshinobu Yoneima, Tamotsu Shimizu | 2015-12-22 |
| 9201349 | Developing device, image forming apparatus | Tamotsu Shimizu, Shizuka Okada, Yuji Kamiyama, Sakae Saito, Yasuhiro Oishi +1 more | 2015-12-01 |
| 9158227 | Developing roller and developing apparatus and image forming apparatus using the same | Yukimasa Watanabe, Sakae Saito, Hiroaki Sakai, Yasuhiro Oishi, Chikara Ishihara +1 more | 2015-10-13 |
| 9122193 | Developing roller, developing device, and image forming apparatus including developing device | Yoshinobu Yoneima, Yuji Kamiyama, Akihiro Watanabe, Tamotsu Shimizu, Shizuka Okada +6 more | 2015-09-01 |
| 8824906 | Image forming apparatus capable of printing long sheets | Chikara Ishihara | 2014-09-02 |
| 8774660 | Image forming apparatus capable of printing long sheets | — | 2014-07-08 |
| 8682228 | Developer apparatus and image forming apparatus comprising the same | Hisashi Mukataka, Yukihiro Mori | 2014-03-25 |
| 8249489 | Developing unit and image forming device | Hiroyuki Hamakawa, Akihiro Watanabe, Hiroshi Yamazaki, Asami Kotera, Sayo Uemura | 2012-08-21 |
| 8112020 | Developing device and image-forming apparatus | Sayo Mabuchi, Hiroyuki Hamakawa, Akihiro Watanabe, Hiroshi Yamazaki, Asami Kotera | 2012-02-07 |
| 8014690 | Developing unit and image forming apparatus | Shoichi Sakata, Takahisa Nakaue, Toyotsune Inoue, Akihiro Watanabe, Yukihiro Mori | 2011-09-06 |
| 8010025 | Developing unit and image forming device | Hiroyuki Hamakawa, Akihiro Watanabe, Hiroshi Yamazaki, Asami Kotera, Sayo Uemura | 2011-08-30 |
| 7937008 | Image forming apparatus and image forming method | Akihiro Watanabe, Sayo Uemura, Yukihiro Mori | 2011-05-03 |
| 7848686 | Developing device and image forming apparatus | Toyotsune Inoue, Takahisa Nakaue, Akihiro Watanabe, Shoichi Sakata, Yukihiro Mori | 2010-12-07 |