Issued Patents All Time
Showing 1–25 of 49 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12346050 | Image forming apparatus | Masataka Okada, Masaki Kadota | 2025-07-01 |
| 11150578 | Developing device having air discharge duct and image forming apparatus including the developing device | Minoru Wada, Ikuo Makie, Yu Sasaki, Yukari Ota, Ryo Yamada | 2021-10-19 |
| 11112730 | Developing device allowing selection of a stirring/conveying member to be used from a plurality of types of stirring/conveying members with rotary shafts with different shaft-diameters and image forming apparatus therewith | Ryo Yamada, Yu Sasaki, Ikuo Makie | 2021-09-07 |
| 10642196 | Cleaning device and image forming apparatus therewith | Yoji Ueda | 2020-05-05 |
| 10042283 | Developing device that removes toner accumulated on top surface of regulating blade with simple configuration, and image forming apparatus including the same | — | 2018-08-07 |
| 9304445 | Developing roller, developing device, image forming apparatus, and manufacturing method of developing roller | Masashi Fujishima, Tamotsu Shimizu, Shizuka Okada, Sakae Saito, Yasuhiro Oishi | 2016-04-05 |
| 9274453 | Developing roller, developing device, and image forming apparatus including developing device | Yasuhiro Oishi, Akihiro Watanabe, Tamotsu Shimizu, Yoshinobu Yoneima, Shizuka Okada +1 more | 2016-03-01 |
| 9207623 | Image forming apparatus including a neutralizing unit for neutralizing electric charge on an image supporting body | — | 2015-12-08 |
| 9201349 | Developing device, image forming apparatus | Tamotsu Shimizu, Shizuka Okada, Sakae Saito, Yasuhiro Oishi, Masashi Fujishima +1 more | 2015-12-01 |
| 9195159 | Image forming apparatus | — | 2015-11-24 |
| 9122193 | Developing roller, developing device, and image forming apparatus including developing device | Yoshinobu Yoneima, Akihiro Watanabe, Tamotsu Shimizu, Shizuka Okada, Sakae Saito +6 more | 2015-09-01 |
| 9122194 | Developing roller, developing device, and image forming apparatus including developing device | Tamotsu Shimizu, Akihiro Watanabe, Yoshinobu Yoneima, Shizuka Okada, Sakae Saito +1 more | 2015-09-01 |
| 8824909 | Image forming apparatus using two-component developer and having controlled timing of application of voltage to magnetic roller | — | 2014-09-02 |
| 6829448 | Image forming apparatus and image forming method | Yoshio Ozawa, Shoichi Sakata, Toshinori Nishimura | 2004-12-07 |
| 6616257 | Printing head, printing method and apparatus using same, and apparatus and method for correcting said printing head | Yoshiyuki Imanaka, Masami Ikeda, Masaaki Izumida | 2003-09-09 |
| 6562537 | Electrostatic latent image developer | Hisashi Mukataka, Noriaki Sakamoto, Yoshio Ozawa | 2003-05-13 |
| 6490792 | Ink tank cartridge, a manufacturing method thereof and a packaging structure of the ink tank cartridge | Hiroyuki Ishinaga, Kazuaki Masuda, Hajime Kaneko | 2002-12-10 |
| 6478416 | Sealing method for ink cartridge | Hiroyuki Ishinaga, Kazuaki Masuda, Hajime Kaneko, Masahiko Higuma, Yoichi Taneya | 2002-11-12 |
| 6471339 | Substrate for thermal recording head, ink jet recording head using the substrate, recording apparatus with the recording head, and method of driving recording head | Fumio Murooka, Tatsuo Furukawa, Shuichi Katao, Yoshiyuki Imanaka, Hiroyuki Maru +1 more | 2002-10-29 |
| 6439690 | Element substrate having connecting wiring between heat generating resistor elements and ink jet recording apparatus | Hiroyuki Ishinaga, Kazuaki Masuda, Junji Shimoda, Masami Kasamoto, Fumio Murooka +6 more | 2002-08-27 |
| 6428154 | Ink cartridge and a method for sealing an aperture provided for such cartridge | Kazuaki Masuda, Hajime Kaneko, Hiroaki Tanaka, Hiroyuki Ishinaga | 2002-08-06 |
| 6409300 | Printing head, printing method and apparatus using same, and apparatus and method for correcting said printing head | Yoshiyuki Imanaka, Masaki Inaba, Masami Ikeda, Yutaka Koizumi, Tsuyoshi Orikasa +13 more | 2002-06-25 |
| 6382772 | Ink jet head, apparatus and method having individually-drivable heat generating resistors variably spaced from an ejection outlet | Hiroyuki Ishinaga, Yoshiyuki Imanaka, Masaaki Izumida | 2002-05-07 |
| 6381437 | Image formation method and apparatus using electrophotography | Yoshio Ozawa, Hisashi Mukataka, Yojiro Sato, Motoki Moriguchi | 2002-04-30 |
| 6336719 | Ink tank cartridge, a manufacturing method thereof and a packaging structure of the ink tank cartridge | Hiroyuki Ishinaga, Kazuaki Masuda, Hajime Kaneko | 2002-01-08 |