Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7602998 | Image signal processing apparatus | Shinichi Sato, Hideyuki Shirai | 2009-10-13 |
| 6771832 | Image processor for processing an image with an error diffusion process and image processing method for processing an image with an error diffusion process | Shinichi Sato, Fumiko Koshimizu | 2004-08-03 |
| 6661991 | Induction heating and fixing device for fixing toner on a recording medium in an image forming apparatus | Akira Takasu, Takahiro Tsujimoto, Kiyohito Tsujihara | 2003-12-09 |
| 6487377 | Recycle information system and image forming apparatus for recycling | Takahiro Tsujimoto, Hiroyuki Yoshikawa, Akinori Kimata, Katsuhide Sakai, Shigeo Ogino | 2002-11-26 |
| 6002811 | Image scaling processing device and image scaling processing method | Fumiko Koshimizu, Shinichi Sato | 1999-12-14 |
| 5546404 | Input/output port fault diagnosing device | Kenichi Takahashi | 1996-08-13 |
| 5495340 | Image reading apparatus having color correction according to tempeature change improved | Shigeru Moriya, Takayoshi Hayashi | 1996-02-27 |
| 5453773 | Electrophotographic image forming apparatus comprising means for automatically adjusting image reproduction density | Yoshihiro Hattori, Kazuyuki Fukui, Takanobu Yamada | 1995-09-26 |
| 5305057 | Image forming apparatus having correction means for modifying image density signals according to a gradation correction table | Yoshihiro Hattori, Suguru Hamamichi, Hideaki Kodama, Takeru Kinoshita | 1994-04-19 |
| 5296895 | Image forming apparatus with toner detection | — | 1994-03-22 |
| 5212560 | Electrophotographic image forming apparatus comprising means for automatically adjusting image reproduction density | Yoshihiro Hattori, Kazuyuki Fukui, Takanobu Yamada | 1993-05-18 |
| 5124750 | Toner density detecting method, and image forming method and apparatus employing the toner density detecting method | — | 1992-06-23 |
| 5081527 | Digital image forming apparatus | — | 1992-01-14 |
| 4982232 | Exposure control system of image forming apparatus | — | 1991-01-01 |
| 4879576 | Exposure control device and method | — | 1989-11-07 |
| 4821107 | Multi-functional imaging apparatus | Keiji Nakatani, Kanji Wada | 1989-04-11 |
| 4433318 | Deflection yoke for a picture tube of a projection color television receiver set | Nobutaka Okuyama, Toshiharu Shimizu | 1984-02-21 |
| 4420734 | Deflecting yoke for use in picture tube of projection color television receiver set | Toshiharu Shimizu, Nobutaka Okuyama, Syuzo Matsumoto | 1983-12-13 |