Issued Patents All Time
Showing 26–50 of 52 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7873291 | Image forming apparatus and process cartridge including charging bias adjustment control | Takaya Muraishi, Takeshi Shintani, Yasushi Akiba, Satoshi Hatori, Kaoru Yoshino | 2011-01-18 |
| 7835683 | Cleaning unit, image carrying unit and image forming apparatus using the same | Takaya Muraishi, Takeshi Shintani, Yasushi Akiba, Satoshi Hatori, Kaoru Yoshino | 2010-11-16 |
| 7778560 | Image forming apparatus and method of adjusting charge bias | Hitoshi Ishibashi, Kohta Fujimori, Shin Hasegawa, Yushi Hirayama, Nobutaka Takeuchi +5 more | 2010-08-17 |
| 7756439 | Image forming apparatus and process cartridge used therein | Takaya Muraishi, Takeshi Shintani, Yasushi Akiba, Satoshi Hatori, Kaoru Yoshino | 2010-07-13 |
| 7756447 | Image forming apparatus and method of preparing toner for use in image forming apparatus | — | 2010-07-13 |
| 7702257 | Image forming apparatus with image bearing member having a lubricant | — | 2010-04-20 |
| 7680446 | Cleaning device, process cartridge and image forming apparatus | Takeshi Shintani, Kaoru Yoshino, Satoshi Hatori, Hiroshi Ono, Takaya Muraishi | 2010-03-16 |
| 7603063 | Method and apparatus for electro photographic image forming capable of effectively performing an evenly charging operation | Hiroshi Ono, Kaoru Yoshino | 2009-10-13 |
| 7596344 | Charging unit and image forming apparatus incorporating the unit | — | 2009-09-29 |
| 7551879 | Charging device, process unit, image forming apparatus, and method for producing rotating member | — | 2009-06-23 |
| 7340200 | Charging unit and image forming apparatus incorporating the unit | — | 2008-03-04 |
| 7302197 | Image forming apparatus having a detachable process cartridge and a lubricant | — | 2007-11-27 |
| 7289748 | Apparatus and method for replenishing a developing device with toner while suppressing toner remaining | Takaaki Yanagisawa, Masumi Sato, Kazuhiko Yuuki, Yoshinori Ozawa, Yoshi Hattori +4 more | 2007-10-30 |
| 7218880 | Apparatus and method for replenishing a developing device with toner while suppressing toner remaining | Takaaki Yanagisawa, Masumi Sato, Kazuhiko Yuuki, Yoshinori Ozawa, Yoshi Hattori +4 more | 2007-05-15 |
| 7155146 | Method and apparatus for electro photographic image forming capable of effectively performing an evenly charging operation | Hiroshi Ono, Kaoru Yoshino | 2006-12-26 |
| 7113727 | Charging device using a charge roller and image forming apparatus including the same | Toshio Koike, Yutaka Narita | 2006-09-26 |
| 6990305 | Charging device using a charge roller and image forming apparatus including the same | Toshio Koike, Yutaka Narita | 2006-01-24 |
| 6961529 | Charging device using a charge roller and image forming apparatus including the same | — | 2005-11-01 |
| 6775511 | Image forming apparatus capable of adjusting an amount of lubricant to be applied onto an image carrier | — | 2004-08-10 |
| 6768879 | Image forming apparatus that applies lubricant to a surface of image carrier | — | 2004-07-27 |
| 6748190 | Apparatus and method for replenishing a developing device with toner while suppressing toner remaining | Takaaki Yanagisawa, Masumi Sato, Kazuhiko Yuuki, Yoshinori Ozawa, Yoshi Hattori +4 more | 2004-06-08 |
| 6576388 | Multilayer electrophotographic photoreceptor, and image forming method, image forming apparatus and process cartridge using the photoreceptor | Yohta Sakon, Tatsuya Niimi, Narihito Kojima | 2003-06-10 |
| 6567637 | Apparatus and method for replenishing a developing device with toner while suppressing toner remaining | Takaaki Yanagisawa, Masumi Sato, Kazuhiko Yuuki, Yoshinori Ozawa, Yoshi Hattori +4 more | 2003-05-20 |
| 6560438 | Method for removing deposit from image substrate and image formation apparatus using the method | — | 2003-05-06 |
| 6505022 | Image forming apparatus having protective layer on the surface of image bearing member to avoid adhesion of film of additives to image bearing member | Masumi Sato, Hitoshi Ishibashi, Hiroshi Yoshinaga, Yukiko Iwasaki | 2003-01-07 |