Issued Patents All Time
Showing 1–25 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9785098 | Image forming apparatus with common power source for primary transfer and secondary transfer | Tohru Nakaegawa | 2017-10-10 |
| 9715193 | Image forming apparatus with constant voltage element for secondary transfer of toner image | Tohru Nakaegawa | 2017-07-25 |
| 9671724 | Image forming apparatus | Tohru Nakaegawa | 2017-06-06 |
| 9329532 | Image forming apparatus that controls potential of electrostatic image forming portion depending on ambient condition | Tohru Nakaegawa | 2016-05-03 |
| 9274477 | Image forming apparatus | Tohru Nakaegawa | 2016-03-01 |
| 9256166 | Image forming apparatus | Tohru Nakaegawa | 2016-02-09 |
| 9250574 | Image forming apparatus with intermediate transfer member having constant voltage element | Tohru Nakaegawa | 2016-02-02 |
| 9217974 | Image forming apparatus | — | 2015-12-22 |
| 8774689 | Electrophotographic image forming apparatus | — | 2014-07-08 |
| 8565655 | Image forming apparatus with belt member push-up feature | — | 2013-10-22 |
| 8532514 | Image forming apparatus | — | 2013-09-10 |
| 8311442 | Image forming apparatus | — | 2012-11-13 |
| 7899349 | Image forming apparatus with controller for setting transfer member bias | — | 2011-03-01 |
| 7890034 | Image forming apparatus | Tatsuomi Murayama | 2011-02-15 |
| 7824018 | Image forming apparatus, market support system, control method and program | — | 2010-11-02 |
| 7769328 | Image forming apparatus including one or more transfer members for transferring color toner and transparent toner images | Tatsuomi Murayama | 2010-08-03 |
| 7437088 | Image forming apparatus including first and second cleaning members with applied voltages based on recording material type | — | 2008-10-14 |
| 7403729 | Image forming apparatus featuring first and second cleaning members wherein a voltage applied to the second cleaning member is changeable | — | 2008-07-22 |
| 7313335 | Image forming apparatus with variably controlled bias condition | — | 2007-12-25 |
| 7215920 | Imaging forming apparatus | — | 2007-05-08 |
| 6473584 | Developing apparatus having carrying capability of screw lowered on developing sleeve side | Masaru Hibino | 2002-10-29 |
| 6449442 | Developing apparatus employing permeability sensor to detect polymer toner density | Yoshiaki Kobayashi, Masaru Hibino, Ichiro Ozawa | 2002-09-10 |
| 6389245 | Developing device and image forming apparatus | Yoshiaki Kobayashi, Masaru Hibino, Ichiro Ozawa | 2002-05-14 |
| 6345162 | Image forming apparatus | Ichiro Ozawa, Yoshiaki Kobayashi, Masaru Hibino | 2002-02-05 |
| 6332063 | Image forming apparatus with residual toner detection and collection features | Ichiro Ozawa, Masaru Hibino | 2001-12-18 |