Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12181804 | Cleanerless image forming apparatus with toner containing 1.8% by mass or less an external additive having a diameter of 5-50 nanometers | Shogo Kezuka, Yasuhide Matsuno, Yutaro Kaku | 2024-12-31 |
| 12032323 | Image forming apparatus and process cartridge | Keisuke Kusano, Wataru Yamada, Masahiro Iwasaki, Yuki OYAMADA | 2024-07-09 |
| 11921453 | Image forming apparatus | Shintaro Yamada, Hiroaki Katoh | 2024-03-05 |
| 11796928 | Electrophotographic photosensitive member, process cartridge, and image forming apparatus | Kenta Shingu, Yoshiteru Yamada, Keisuke Kusano, Kohei Hashimoto, Yuto Okazaki +3 more | 2023-10-24 |
| 10372049 | Electrophotographic photoreceptor, process cartridge, and image-forming apparatus | Hirofumi Nakamura, Yohei Saito, Keisuke Kusano | 2019-08-06 |
| 10101678 | Electrophotographic photoreceptor, process cartridge, and image-forming apparatus | — | 2018-10-16 |
| 10073405 | Image forming apparatus | Hirofumi Nakamura | 2018-09-11 |
| 8956793 | Electrophotographic photoreceptor, process cartridge, and image forming apparatus | Kenta IDE, Kosuke Narita, Satoya Sugiura, Akihiro Nonaka, Hirofumi Nakamura +2 more | 2015-02-17 |
| 8877412 | Image forming apparatus and process cartridge | Kenta IDE, Kosuke Narita, Hirofumi Nakamura, Kazuhiro Koseki, Shigeto Hashiba +1 more | 2014-11-04 |
| 8808953 | Electrophotographic photoreceptor, process cartridge, and image forming apparatus | Satoya Sugiura, Shigeto Hashiba, Kazuhiro Koseki, Hirofumi Nakamura, Kenta IDE +2 more | 2014-08-19 |
| 8802337 | Electrophotographic photoreceptor, image forming apparatus, and process cartridge | Shigeto Hashiba, Hirofumi Nakamura, Hidemi Nukada, Satoya Sugiura | 2014-08-12 |
| 8041241 | Image forming apparatus and image forming method which controls the exposing of an image carrier to change the exposure time period in the main scanning direction | Yoshiko Ogawa, Rumi Konishi | 2011-10-18 |
| 7885566 | Toner consumption-calculating apparatus, image forming apparatus, and toner consumption calculating method | Rumi Konishi, Kenichi Ono, Yoshiko Ogawa, Atsushi Takehara | 2011-02-08 |
| 7791635 | Image forming apparatus and image forming method | Yoshiko Ogawa | 2010-09-07 |
| 7734235 | Image forming apparatus including a metallic driving roller | Atsushi Takehara, Yoshie Iwakura, Tomoya Adachi, Takafumi Miyazaki | 2010-06-08 |
| 7636539 | Tandem intermediate-transfer type image forming apparatus | Atsushi Takehara, Yoshie Iwakura, Takafumi Miyazaki, Tomoya Adachi | 2009-12-22 |
| 7428400 | Primary transfer unit of image forming apparatus | Yoshie Iwakura, Atsushi Takehara, Takafumi Miyazaki, Tomoya Adachi | 2008-09-23 |
| 6708016 | Developing device comprising a regulation member having at least one bent part | Yoshihiro Fukuhata, Hiroaki Umemoto, Koji Uno, Eiji Gyotoku | 2004-03-16 |
| 6343201 | Developing apparatus comprising developing roller that is rotated upward from below in developing area and image forming apparatus using the same | Minoru Wada, Tetsumaru Fujita, Ichiro Demizu, Eiji Gyotoku, Yoichi Fujieda +1 more | 2002-01-29 |
| 6278849 | Developing apparatus for developing an electrostatic latent image on an image carrying member | — | 2001-08-21 |
| 6029033 | Clearless color image forming apparatus | — | 2000-02-22 |
| 5995791 | Developing apparatus having a regulating member | — | 1999-11-30 |
| 5864736 | Image forming apparatus with developing recovery device | Hirokatsu Shimada, Tamotsu Sakuraba | 1999-01-26 |
| 5832336 | Image forming apparatus | Koji Uno, Tamotsu Sakuraba, Hiroyuki Maeda | 1998-11-03 |
| 5708921 | Developing device in an image forming apparatus for removing particulate material from the developer | Masataka Yagi, Tamotsu Sakuraba | 1998-01-13 |