Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12210302 | Image forming apparatus | Hokuto Hatano, Kazuhiro Saito | 2025-01-28 |
| 10635024 | Developing device and image forming apparatus, wherein the developing roller includes a magnetic pole forming part to be formed with a plurality of magnetic poles along a circumference direction of the developing roller | Kazuteru Ishizuka, Hiroyuki Saito, Kei Okamura, Aiko Kubota | 2020-04-28 |
| 10558141 | Image forming apparatus, developing device, and developer liquid-level detection program | Aiko Kubota, Hiroyuki Saito, Kazuteru Ishizuka, Kei Okamura | 2020-02-11 |
| 10437173 | Developing device and image forming device that mixes developing agent | Kazuteru Ishizuka, Hideaki Tanaka, Shota Sakurai, Kei Okamura, Kei Yuasa | 2019-10-08 |
| 10338494 | Developing apparatus and image forming apparatus having developer movement apparatus | Hideaki Tanaka, Kazuteru Ishizuka, Shota Sakurai, Kei Okamura, Kei Yuasa | 2019-07-02 |
| 10289046 | Image forming apparatus with periodic non-uniformity correction and computer-readable recording medium storing program | Makoto Ikeda | 2019-05-14 |
| 10241444 | Developing device and image forming apparatus for efficient equalization of developer along a developing device | Kei Okamura, Hideaki Tanaka, Kazuteru Ishizuka, Shota Sakurai, Kei Yuasa | 2019-03-26 |
| 10203630 | Developing apparatus and image forming apparatus | Kei Yuasa, Hideaki Tanaka, Kazuteru Ishizuka, Shota Sakurai, Kei Okamura | 2019-02-12 |
| 10139755 | Developing device with side by side developing sections, and image forming apparatus with same | Shota Sakurai, Kei Okamura, Hideaki Tanaka, Kazuteru Ishizuka, Kei Yuasa | 2018-11-27 |
| 9927756 | Image forming apparatus, image formation system, density-unevenness correction method and recording medium | Makoto Ikeda | 2018-03-27 |
| 9915905 | Image forming apparatus | Hiroshi Morimoto, Wataru Watanabe, Kei Okamura | 2018-03-13 |
| 9857746 | Image forming apparatus | Kei Okamura, Hiroshi Morimoto, Wataru Watanabe | 2018-01-02 |
| 9606489 | Image forming apparatus, image forming system, and density unevenness correction method | Hiroshi Morimoto, Wataru Watanabe, Kei Okamura | 2017-03-28 |
| 9423723 | Image forming apparatus and image forming device with toner layer forming unit | Hiroyuki Saito | 2016-08-23 |
| 9310749 | Image forming apparatus and image forming method | Hiroyuki Saito | 2016-04-12 |
| 8818245 | Developing device and image forming apparatus | Osamu Maeda | 2014-08-26 |
| 8712308 | Lubricant coating device and image forming apparatus | Ryoei Ikari, Seiko Itagaki, Kazutoshi Kobayashi, Tatsuya Furuta | 2014-04-29 |
| 8620189 | Developing device and image forming device avoiding excessive discharge of developer | Toshikazu Suzaki | 2013-12-31 |
| 8611797 | Developing device and image forming apparatus including passing developer amount changing mechanism | Osamu Maeda | 2013-12-17 |
| 8090289 | Charging device and an image forming apparatus provided with the charging device | Osamu Maeda | 2012-01-03 |
| 7917052 | Charging device and an image forming apparatus provided with the charging device | Osamu Maeda | 2011-03-29 |