Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10437184 | Image forming apparatus | — | 2019-10-08 |
| 9207556 | Image formation apparatus having cleaning mode to clean charging device configured to charge image carrier | Tsutomu Kosasa | 2015-12-08 |
| 9134648 | Image forming unit and image forming apparatus | — | 2015-09-15 |
| 8903281 | Image forming apparatus including an image forming unit with white developer | — | 2014-12-02 |
| 8447222 | Image forming unit with developer collector contacting image carrier at predetermined contact pressure, and image forming device | — | 2013-05-21 |
| 8401453 | Cleaning device and image forming apparatus | — | 2013-03-19 |
| 8285162 | Image forming apparatus that includes a first developing device that holds a black developer and a second developing device that holds a gray developer | — | 2012-10-09 |
| 8182972 | Developer, developer storage unit, developing device, and image forming apparatus | — | 2012-05-22 |
| 8086125 | Image forming apparatus that includes a first developing device that holds a black developer and a second developing device that holds a gray developer | — | 2011-12-27 |
| 7745086 | Developer material, developer material cartridge, image forming device, and image forming apparatus | — | 2010-06-29 |
| 7286781 | Developer, image forming method and image forming apparatus | — | 2007-10-23 |
| 7282315 | Developer, developer cartridge, and image forming apparatus | Toru Ishihara | 2007-10-16 |
| 7090954 | Developer, developer cartridge, and image forming apparatus | Toru Ishihara | 2006-08-15 |
| 6661988 | Image-forming apparatus having a silicone roller to prevent filming effect | Toru Ishihara | 2003-12-09 |