Issued Patents All Time
Showing 1–25 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE38235 | Scanning recording type printing method and apparatus for increasing image quality by controlling tone dot locations within image pixels | Shinya Kobayashi | 2003-08-26 |
| 6330414 | Developing system having a plurality of developing rollers with opposing magnets of same polarity | Yasuo Takuma, Yoshitaka Fujinuma, Tomonari Hokkyou, Koji Kato | 2001-12-11 |
| 6157798 | Electrostatic recording apparatus | Tsuneaki Kawanishi, Tomonari Hokkyo, Katsuya Kawai, Koji Kato | 2000-12-05 |
| 6047147 | Electrostatic image forming apparatus | Koji Kato, Hisayoshi Kato | 2000-04-04 |
| 6032015 | Apparatus for printing on both sides of an image printing medium by one process | Takao Umeda, Ryoji Kojima, Michio Yokosuka, Katsuhiko Suzuki, Tadahiro Kaneko | 2000-02-29 |
| 5923933 | Electrophotographic apparatus | Tsuneaki Kawanishi, Yoshitaka Fujinuma, Hiroyoshi Matsumoto, Yasuo Takuma, Hisao Okada +7 more | 1999-07-13 |
| 5907755 | Developing device | Yasuo Takuma, Yoshitaka Fujinuma, Hisao Okada | 1999-05-25 |
| 5869214 | Color image forming apparatus and color image forming method thereof | Yoshihiro Gunji, Kozi Kato, Shin-ichi Nishino, Nobuyoshi Hoshi, Teruaki Mitsuya | 1999-02-09 |
| 5848323 | Apparatus for printing images on both sides of an image printing medium by one process | Takao Umeda, Ryoji Kojima, Michio Yokosuka, Katsuhiko Suzuki, Tadahiro Kaneko | 1998-12-08 |
| 5832350 | Developing apparatus and color electrophotographic apparatus using the same | Takao Kumasaka, Kunio Fukuchi, Tatsuo Igawa | 1998-11-03 |
| 5832347 | Toner for recording electrostatic image and electrostatic recording method and apparatus using the same | Katsuya Kawai, Tsuneaki Kawanishi | 1998-11-03 |
| 5701560 | Image forming apparatus having a photosensitive body formed of a base material consisting of As.sub.2 Se.sub.3 or a-Si and a method | Akio Tsujita, Tsuneaki Kawanishi | 1997-12-23 |
| 5659841 | Electrostatic recording control method and electrostatic recording apparatus | Takao Umeda, Hiroyuki Mabuchi, Shinji Asai, Kozi Kato, Yoshihiro Gunji | 1997-08-19 |
| 5630201 | Development apparatus having a plurality of rolls rotated at particular speeds | Katsuhiko Suzuki, Takao Umeda | 1997-05-13 |
| 5600405 | Bias cleaning system and electrostatic printing apparatus therewith and operating method thereof | Takao Umeda, Katsuya Kawai, Yosuke Saito, Hiroyuki Mabuchi, Masato Miwa +3 more | 1997-02-04 |
| 5579096 | Imaging apparatus and method for cleaning transfer/conveyer means | Yousuke Saito, Takao Umeda, Hiroyuki Mabuchi, Yasuo Kikuchi, Masato Miwa +1 more | 1996-11-26 |
| 5481351 | Electrophotographic recording apparatus having improved residual toner cleaning function | Katsuya Kawai, Toshimitsu Harada, Shinichi Nishino | 1996-01-02 |
| 5473422 | Color image forming device | — | 1995-12-05 |
| 5453822 | Optional side multi-toner image forming apparatus using intermediate transfer member | Yasuo Kikuchi | 1995-09-26 |
| 5422219 | Method and apparatus for forming toner image | Yosuke Saito, Shinichi Nishino | 1995-06-06 |
| 5416571 | Developing device for electrophotograph-type printer | Koutaro Yamada, Yasuyuki Tsuji, Youji Hirose, Yukio Otome, Koji Doi +4 more | 1995-05-16 |
| 5237377 | Cleaning device for dry electrophotographic device | Toshimitsu Harada, Sadaki Maeda, Shinichi Nishino, Toshitaka Ogawa | 1993-08-17 |
| 5223952 | Image recording device and a data processing apparatus | — | 1993-06-29 |
| 4926248 | Scanning recording type printing method and apparatus for increasing image quality by controlling tone dot locations within image pixels | Shin'ya Kobayashi | 1990-05-15 |
| 4822702 | Method for forming multi-color toner image | Nobuyoshi Hoshi, Isamu Komatsu, Susumu Akimaru | 1989-04-18 |