Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6428143 | Ink jet image forming method and ink jet image forming device | Hiroyuki Sawai | 2002-08-06 |
| 6097410 | Method and apparatus for forming an image on a recording medium wherein ink emission is accurately controlled by varying the surface level of chargeable developer ink | Hideo Yamasa | 2000-08-01 |
| 6084614 | Method and apparatus for forming an image using flying developing particles | Hideo Yamasa | 2000-07-04 |
| 5903291 | Ink jet head utilizing electroviscous fluid for control of ink discharge | Hisashi Yoshimura, Kohji Tsurui, Hiroshi Kubota, Kazuya Koyama, Hajime Horinaka +1 more | 1999-05-11 |
| 5471283 | Device for preventing breakdown of contact charger for use in electrophotographic printing machine | Hideo Yamasa, Fumio Shimazu, Takasumi Wada | 1995-11-28 |
| 5430532 | Developing device with a tilt detecting function designed for a trickle system | Atsushi Ueda, Yasuhiro Takai, Hirokazu Tanaka, Hideo Yamasa | 1995-07-04 |
| 5398102 | Electrophotographic copier and charging means used therefor | Takasumi Wada, Kenji Tani, Takashi Hayakawa, Yukihito Nishio | 1995-03-14 |
| 5189471 | Image forming apparatus with slidably mounted developing unit and photoconductive unit | Yukinori Andou, Yuhi Yui | 1993-02-23 |
| 5032870 | Electrophotographic apparatus | Yuhi Yui, Yukinori Andou, Masatsugu Nakamura | 1991-07-16 |
| 5003350 | Image forming apparatus | Yuhi Yui, Yukinori Andou | 1991-03-26 |
| 4984018 | Process cartridge having an integrally molded shield casing for the corona charger | Yukinori Andou, Yuhi Yui | 1991-01-08 |