Issued Patents All Time
Showing 1–25 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9309650 | Working machine and method of measuring work amount of working machine | Atsushi Nagato, Hiromi Tokura | 2016-04-12 |
| 8535116 | Magnetic particle carrying device, and developing unit, process cartridge, and image forming apparatus using the same, and surface treatment method of the same | Hiroya Abe, Kyohta Koetsuka, Tadaaki Hattori, Yoshiyuki Takano, Noriyuki Kamiya +3 more | 2013-09-17 |
| 8500615 | Magnetic roller and manufacturing method thereof, developer carrier, development device, processing cartridge, and image forming apparatus | Yoshiyuki Takano, Kyohta Koetsuka, Tadaaki Hattori, Noriyuki Kamiya, Hiroya Abe +3 more | 2013-08-06 |
| 8175501 | Development roller including a development sleeve, surface treatment device that treats an outer surface of the development sleeve and wire member that roughens the outer surface of the development sleeve | Noriyuki Kamiya, Sumio Kamoi, Kyohta Koetsuka, Yoshiyuki Takano, Mieko Terashima +4 more | 2012-05-08 |
| 8023867 | Magnet roller and method for the same, magnetic particle-support member, development device, process cartridge, and image forming apparatus | Yoshiyuki Takano, Kyohta Koetsuka, Noriyuki Kamiya, Masayuki Ohsawa, Hiroya Abe +3 more | 2011-09-20 |
| 7899374 | Magnetic particle carrying device, and developing unit, process cartridge, and image forming apparatus using the same, and surface treatment method of the same | Hiroya Abe, Kyohta Koetsuka, Tadaaki Hattori, Yoshiyuki Takano, Noriyuki Kamiya +3 more | 2011-03-01 |
| 7891094 | Method of manufacturing a hollow body used in an image forming apparatus | Kyohta Koetsuka, Yoshiyuki Takano, Masayuki Ohsawa, Hiroya Abe, Mieko Terashima +3 more | 2011-02-22 |
| 7664441 | Developer holding member, development device, process cartridge, image forming apparatus and method of manufacturing hollow body | Kyohta Koetsuka, Yoshiyuki Takano, Masayuki Ohsawa, Hiroya Abe, Mieko Terashima +3 more | 2010-02-16 |
| 7572388 | Magnet compound material to be compression molded, a molded elongate magnetic, a magnet roller, a developing agent-carrying body, a developing apparatus and an image-forming apparatus | Satoshi Terashima, Sumio Kamoi, Yoshiyuki Takano, Kyohta Koetsuka, Noriyuki Kamiya +1 more | 2009-08-11 |
| 7366454 | Long magnet, production method thereof, magnet roller and image forming device | Makoto Nakamura, Mieko Kakegawa, Sumio Kamoi, Kyohta Koetsuka, Noriyuki Kamiya | 2008-04-29 |
| 7356295 | Developer-carrying member having improved transportability, a developing unit, a process cartridge and an image forming apparatus | — | 2008-04-08 |
| 7352983 | Development magnet roller, development device, process cartridge and image forming apparatus | Noriyuki Kamiya, Takahiro Yasunaga, Sumio Kamoi, Kyohta Koetsuka, Mieko Kakegawa | 2008-04-01 |
| 7272342 | Image forming apparatus having a detachable cartridge including a photoconductive drum with axis shaft having a minimal rotational eccentricity, and a method of assembling the image forming apparatus | Hiroyuki Nagashima, Kazuyuki Sugihara, Katsumi Masuda, Hideki Kimura, Kiyotaka Sakai +1 more | 2007-09-18 |
| 7228093 | Method and apparatus for image forming capable of performing a stable image development | Kiyotaka Sakai, Hideo Yoshizawa, Katsumi Masuda, Hideki Kimura | 2007-06-05 |
| 7212773 | Image forming apparatus | Kazuhisa Sudo, Kazuyuki Sugihara, Hideo Yoshizawa, Katsumi Masuda, Hideki Kimura +1 more | 2007-05-01 |
| 7203450 | Developing roller, developing apparatus, process cartridge, and image formation apparatus | Mieko Kakegawa, Sumio Kamoi, Kyohta Koetsuka, Noriyuki Kamiya | 2007-04-10 |
| 7189338 | Image forming apparatus and developing device therefor | Sumio Kamoi, Mieko Kakegawa, Noriyuki Kamiya, Kyohta Koetsuka, Masayuki Takeshita | 2007-03-13 |
| 7127199 | Developing device and process cartridge with predetermined magnetic force for an image forming apparatus | Sumio Kamio, Kyohta Koetsuka, Noriyuki Kamiya, Mieko Kakegawa | 2006-10-24 |
| 7027761 | Developing device and an image forming apparatus including the same | Kyohta Koetsuka, Sumio Kamoi, Noriyuki Kamiya, Kenji Narita, Kenzo Tatsumi +1 more | 2006-04-11 |
| 6697593 | Developing device using a developing roller and image forming apparatus including the same | Sumio Kamoi, Kyota Koetsuka, Noriyuki Kamiya, Mieko Kakegawa, Toshihiro Atsumi | 2004-02-24 |
| 6522855 | Image forming apparatus and developing apparatus preventing uneven image density | Shunji Katoh, Hideo Yoshizawa, Shinji Tamaki, Junichi Terai, Kiyonori Tsuda +3 more | 2003-02-18 |
| 6337957 | Image forming apparatus and developing device with improved self toner density control | Shinji Tamaki, Hideo Yoshizawa, Junichi Terai, Masayuki Yamane, Kiyonori Tsuda +5 more | 2002-01-08 |
| 6330415 | Developing device and magnet roller for developing device | Kyohta Koetsuka, Kenichi Ishiguro | 2001-12-11 |
| 6198895 | Developing device with improved developer circulation and toner density control | Kiyonori Tsuda, Shunji Katoh, Hideo Yoshizawa, Shinji Tamaki, Masayuki Yamane | 2001-03-06 |
| 6112042 | Developing device and developing roller therefor | Makoto Nakamura, Kyota Koetuka, Kenji Narita, Kenichi Ishiguro | 2000-08-29 |