Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11073773 | Image forming apparatus and control method thereof | Mitsutoshi Watanabe | 2021-07-27 |
| 10126687 | Image forming apparatus | Sunao Takenaka | 2018-11-13 |
| 8121526 | Image forming device and image forming device control method | Koichiro Sato | 2012-02-21 |
| 7962074 | Developing unit, image forming apparatus, and floating developer collecting method for developing unit | Satoshi Itaya | 2011-06-14 |
| 7885589 | Image forming device and image forming device control method | Koichiro Sato | 2011-02-08 |
| 7570908 | Image forming device and image forming device control method | Koichiro Sato | 2009-08-04 |
| 6744995 | Electrophotographic image forming apparatus | Koichiro Sato | 2004-06-01 |
| 6470164 | Image forming apparatus provided with a development device having a discharge port for a developing solution | — | 2002-10-22 |
| 5692232 | Electrophotographic apparatus that prevents toner from attaching to a contact member of a transfer device | Yoshiaki Okano, Hiroshi Hashizume, Kouichirou Satou, Tetsuya Nakamura, Satoshi Katagata +4 more | 1997-11-25 |
| 5655178 | Electrophotographic apparatus having cleaning device and developing device configured to prevent toner leakage | Masaaki Ishikawa, Michihisa Iguchi, Hiroshi Hashizume, Tetsuya Nakamura, Kouichirou Satou +6 more | 1997-08-05 |
| 5600417 | Developing device for electrophotographic apparatus | Michihisa Iguchi, Hiroshi Hashizume, Seiji Arai, Yoshiaki Okano, Chinobu Sakai +4 more | 1997-02-04 |
| 5557379 | Image forming apparatus having a toner conveyance regulator | Tetsuya Nakamura | 1996-09-17 |
| 5537192 | Transfer roller and toner for electrophotographic apparatus | Michihisa Iguchi, Hiroshi Hashizume, Seiji Arai, Yoshiaki Okano, Chinobu Sakai +4 more | 1996-07-16 |
| 5488462 | Electrophotographic apparatus having developing device with seals for preventing toner leakage | Masaaki Ishikawa, Michihisa Iguchi, Hiroshi Hashizume, Tetsuya Nakamura, Kouichirou Satou +6 more | 1996-01-30 |
| 5412364 | Toner pack and development device for use in electrophotographic apparatus | Michihisa Iguchi, Hiroshi Hashizume, Seiji Arai, Yoshiaki Okano, Chinobu Sakai +4 more | 1995-05-02 |
| 5278581 | Printer for printing and image formed of 2-dimensionally arranged pixels, and method of printing the same | Tetsuya Nakamura, Haruki Kinoshita, Masayoshi Aihara, Katsumi Murano, Masanori Terasaki +1 more | 1994-01-11 |
| 5188057 | Developing apparatus | Masaaki Ishikawa, Michihisa Iguchi, Hiroshi Hashizume, Yasuo Fujii, Tetsuya Nakamura +7 more | 1993-02-23 |