Issued Patents All Time
Showing 101–125 of 150 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7158736 | Process cartridge having first and second rotatably coupled frames and electrophotographic image forming apparatus mounting such process cartridge | Masaaki Sato, Atsushi Numagami, Shinjiro Toba | 2007-01-02 |
| 7155141 | Electrophotographic image forming apparatus | Masaaki Sato, Hideki Kotsuka | 2006-12-26 |
| 7149457 | Process cartridge and electrophotographic image forming apparatus | Shinjiro Toba, Masaaki Sato | 2006-12-12 |
| 7136604 | Process cartridge having electrical contact connectable to electrical contact in electrophotographic image forming apparatus | Kazuo Chadani, Toshiyuki Karakama, Yoshiyuki Batori, Koji Yamaguchi | 2006-11-14 |
| 6934485 | Process cartridge, electrophotographic image forming apparatus and fixing method of electrical contact part | Hiroomi Matsuzaki, Akira Suzuki, Kazuo Chadani, Daisuke Abe | 2005-08-23 |
| 6931226 | Process cartridge remanufacturing method | Kazuo Chadani, Hiroomi Matsuzaki, Akira Suzuki | 2005-08-16 |
| 6836629 | Developing blade, process cartridge, and electrophotographic image forming apparatus | Shinjiro Toba | 2004-12-28 |
| 6795666 | Remanufacturing method for process cartridge | Hiroomi Matsuzaki, Akira Suzuki, Kazuo Chadani | 2004-09-21 |
| 6708010 | Developing apparatus having magnetic seal | Shinjiro Toba | 2004-03-16 |
| 6678488 | Image forming apparatus to which a process cartridge is detachably mountable and process cartridge comprising a rotation fulcrum portion | Shinjiro Toba | 2004-01-13 |
| 6671473 | Developing apparatus provided with seal functions on both sides of developing roller | — | 2003-12-30 |
| 6603939 | Developing apparatus, process cartridge, connecting method between developing frame and developer frame, and flexible seal | Shinjiro Toba, Tadayuki Tsuda, Hiroaki Sakai | 2003-08-05 |
| 6549736 | Process cartridge, engaging member therefor and method for mounting developing roller and magnet | Hiroomi Matsuzaki, Akira Suzuki, Shinjiro Toba | 2003-04-15 |
| 6542706 | Process cartridge and electrophotographic image forming apparatus | Shinjiro Toba, Tadayuki Tsuda, Shinichi Sasaki | 2003-04-01 |
| 6519431 | Process cartridge, assembling method therefor and electrophotographic image forming apparatus | Shinjiro Toba, Tadayuki Tsuda | 2003-02-11 |
| 6473578 | Developing apparatus | Tadayuki Tsuda, Shinjiro Toba | 2002-10-29 |
| 6438347 | DEVELOPING DEVICE FEATURING A CONTROL MEMBER HAVING A CENTER PORTION WIDTH WIDER THAN END PORTIONS WIDTH IN A LONGITUDINAL DIRECTION THEREOF FOR CONTROLLING DEVELOPER THICKNESS AND METHOD FOR USING SAME | Susumu Nittani, Kanji Yokomori, Tachio Kawai | 2002-08-20 |
| 6415121 | Connecting method of resin material molded product, process cartridge and assembling method of process cartridge | Akira Suzuki, Kenshiro Abe, Tadayuki Tsuda, Shinichi Sasaki, Kouichi Hiratsuka | 2002-07-02 |
| 6351620 | Process cartridge having guide projections and image forming apparatus using same | Kouji Miura, Takeshi Arimitsu | 2002-02-26 |
| 6343192 | Developing device frame, process cartridge, and electrophotographic image forming apparatus | Yoshiya Nomura, Kanji Yokomori | 2002-01-29 |
| 6336017 | Mounting member for mounting a flange to an end of a cylindrical member of an electrophotographic photosensitive drum of a process cartridge, such a flange, such a drum, and such a process cartridge | Jun Miyamoto, Takeshi Arimitsu | 2002-01-01 |
| 6317572 | Electrophotographic image forming apparatus and process cartridge detachably mountable thereto comprising a positioning portion for engagement with a positioning member of a main assembly of the image forming apparatus | Kouji Miura | 2001-11-13 |
| 6282395 | Developing device and process cartridge | Susumu Nittani, Kanji Yokomori, Tachio Kawai | 2001-08-28 |
| 6282390 | Process cartridge and electrophotographic image forming apparatus | Jun Miyamoto, Takeshi Arimitsu | 2001-08-28 |
| 6226476 | Developing device holder having antenna contact mounting unit | Yoshiya Nomura, Kanji Yokomori | 2001-05-01 |