Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6057869 | Image forming apparatus for fixing a toner image at a first speed or at a second speed | Yasunori Kawaishi, Kenichi Mizuma, Yoshihiro Sakai, Leo Munakata, Hideki Kamiyama +1 more | 2000-05-02 |
| 5926670 | Image forming apparatus cleaning an intermediate transfer member carrying a concurrently existing plurality of toner image pages | Reo Munakata, Yoshihiro Sakai | 1999-07-20 |
| 5825398 | Image forming apparatus using a synchronized transfer medium driver | Yoshihiro Sakai, Kazushige Taguchi, Mitsuru Mamizuka | 1998-10-20 |
| 5631691 | Image forming apparatus | Yoshihiro Sakai, Kazushige Taguchi, Mitsuru Mamizuka | 1997-05-20 |
| 5321475 | Color image forming apparatus which accelerates or decelerates the developing sleeves at a constant rate | Yoshimine Horiuchi, Yoshihiro Sakai | 1994-06-14 |
| 5164783 | Image forming apparatus for the synchronizing of laser writer with photosensitive body to prevent time lag | Kazushige Taguchi | 1992-11-17 |
| 5160969 | Image forming apparatus having a separate black developer stored for a color image | Kenichi Mizuma, Nobuo Kasahara, Noriyuki Kimura, Shinju Nagatsuna, Mitsuru Mamizuka +6 more | 1992-11-03 |
| 5121170 | Device for transporting sheet members using an alternating voltage | Kazunori Bannai, Noriyuki Kimura, Kenichi Mizuma, Katsuo Sakai, Kazusige Taguchi +2 more | 1992-06-09 |
| 5083141 | Image forming apparatus | Kazushige Taguchi | 1992-01-21 |
| 4933727 | Color recording apparatus | Kenichi Mizuma, Yutaka Koizumi, Mitsuru Mamizuka, Katsuo Sakai, Yoshihiro Sakai +3 more | 1990-06-12 |
| 4796050 | Mechanism for driving photosensitive drums | Yoshihiro Sakai, Mitsuru Mamizuka, Fumitaka Fujieda | 1989-01-03 |
| 4746950 | Color copier | Mitsuru Mamizuka, Yutaka Koizumi, Yoshihiro Sakai | 1988-05-24 |
| 4742371 | Optical system for color copier | Yutaka Koizumi, Kazusige Taguchi, Yoshihiro Sakai | 1988-05-03 |
| 4690541 | Color electrophotographic copying process | Yoshihiro Sakai, Ituso Ikeda, Katsuo Sakai, Tsukasa Adachi, Satoshi Shinguryo | 1987-09-01 |
| 4690542 | Color copying apparatus | Yutaka Koizumi, Mitsuru Mamizuka, Yoshihiro Sakai | 1987-09-01 |
| 4664501 | Method of and apparatus for producing duplicates in color | Yutaka Koizumi, Yoshihiro Sakai, Mitsuru Mamizuka, Tsukasa Adachi, Itsuo Ikeda +1 more | 1987-05-12 |
| 4662739 | Method of controlling copying machine operation | Yoshihiro Sakai, Yutaka Koizumi, Mitsuru Mamizuka | 1987-05-05 |
| 4655579 | Multicolored image forming apparatus | Tsukasa Adachi, Satoshi Shinguryo, Yoshihiro Sakai, Itsuo Ikeda, Katsuo Sakai | 1987-04-07 |
| 4615607 | Dual-color copier | Nobuyuki Yanagawa, Tadao Koike, Toyoji Ishikawa, Katsuo Sakai | 1986-10-07 |