Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5724641 | Image forming apparatus comprising a stapler relatively movable in the positions of the original discharge tray and the sheet discharge trays | Yoshihiro Shojo, Keichi Kinoshita, Yoshio Sakagawa | 1998-03-03 |
| 5466938 | Corona discharge device | Yasunori Nakayama, Noboru Yonekawa, Kouji Matsushita, Yasuhiro Nakagami | 1995-11-14 |
| 5253031 | Method of forming a reference pattern for adjusting image density in copying machines | Naoyoshi Kinoshita, Keiji Kusumoto, Katsuhiko Takeda, Hiroyuki Ideyama | 1993-10-12 |
| 5189478 | Image forming method and image forming apparatus, including means for controlling the charge on a transfer medium | Yoshinobu Hara, Kazuyoshi Hara | 1993-02-23 |
| 5182598 | Control means for a transfer charger in an image forming apparatus | Yoshinobu Hara, Kazuyoshi Hara | 1993-01-26 |
| 5138363 | Transfer device for duplex copier using a single charger and transfer belt | — | 1992-08-11 |
| 5044313 | Electrostatic latent image developing apparatus | Kouji Matsushita, Hidetoshi Kawabata | 1991-09-03 |
| 4984022 | Image forming apparatus having means for attenuating bias voltage of the developing sleeve | Kouji Matsushita | 1991-01-08 |
| 4887130 | Electrostatic latent image developing apparatus | Kouji Matsushita, Hidetoshi Kawabata | 1989-12-12 |
| 4878082 | Automatic image density control apparatus | Kouji Matsushita, Keigo Tange | 1989-10-31 |
| 4800144 | Laminated type photosensitive member for electrophotography comprising a substrate of aluminate | Hideaki Ueda, Katsutoshi Konishi | 1989-01-24 |
| 4676192 | Dry process developing apparatus | Susumu Sakakibara | 1987-06-30 |
| 4572102 | Method of controlling replenishment of toners | Tateki Oka, Susumu Sakakibara, Naoki Toyoshi | 1986-02-25 |
| 4447517 | Method of developing electrostatic latent images | Susumu Sakakibara, Takuma Ishikawa, Nobuo Kito, Toshio Yamamoto | 1984-05-08 |
| 4376813 | Reversal development method of electrostatic latent image by the use of high-resistivity magnetic toner | Toshio Yamamoto, Susumu Sakakibara | 1983-03-15 |
| 4373802 | Pre-operative time display system for copying machines | Nobuo Kitou, Toshio Yamamoto, Michiru Kanesaka | 1983-02-15 |
| 4287850 | Magnetic brush developing apparatus | Toshio Yamamoto | 1981-09-08 |