Issued Patents All Time
Showing 1–25 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8666264 | Image forming apparatus and toner refilling method therefor | Tetsuya Abe, Hideki Ando, Hiroaki Ootsubo, Chihiro Toyama, Yuichiro Iegaki | 2014-03-04 |
| 8442420 | Intermediate transfer belt and electro-photographic image forming apparatus with intermediate transfer belt | — | 2013-05-14 |
| 7313338 | Image transfer device | Toshiki Takiguchi, Hiroyuki Murai, Yoko Sawa | 2007-12-25 |
| 7302217 | Image forming apparatus and transfer apparatus employing endless belt | Toshiki Takiguchi, Yoshiaki Masuda, Hiroyuki Murai, Hirokazu Yamauchi | 2007-11-27 |
| 7257351 | Detaching/attaching mechanism and image forming device | Hiroshi Tachiki, Masashi Hirai, Kohichi Yamauchi, Noritaka Okazaki | 2007-08-14 |
| 7162178 | Transfer device and image forming apparatus | Toshiki Takiguchi, Hiroshi Tachiki, Hirokazu Yamauchi, Hiroyuki Murai, Yoshiaki Masuda +1 more | 2007-01-09 |
| 6957022 | Image forming apparatus | Masashi Hirai, Kohichi Yamauchi, Hiroshi Tachiki, Yuji Nakagawa | 2005-10-18 |
| 6889027 | Multicolored image forming apparatus for forming multicolored and monochromatic images | Hiroshi Tachiki, Toshio Yamanaka, Masashi Hirai, Kouichi Yamauchi | 2005-05-03 |
| 6876820 | Image forming apparatus | Masashi Hirai, Kohichi Yamauchi, Hiroshi Tachiki, Yuji Nakagawa | 2005-04-05 |
| 6301023 | Image forming apparatus | Masashi Hirai, Hidekazu Sakagami, Syoichiro Yoshiura, Osamu Nakayama, Noritaka Okazaki | 2001-10-09 |
| 6259869 | Image forming apparatus | Takuya Abe, Kiyoshi Toizumi, Hiromu Yoshimoto, Kouichi Yamauchi, Hiroshi Tachiki +3 more | 2001-07-10 |
| 6233422 | Image forming apparatus having transfer drum with transfer paper charging member | Takuya Abe, Kiyoshi Toizumi, Hiromu Yoshimoto, Kouichi Yamauchi, Hiroshi Tachiki +3 more | 2001-05-15 |
| 6169862 | Image forming apparatus with nip time changing device | Takuya Abe, Kiyoshi Toizumi, Hiromu Yoshimoto, Kouichi Yamauchi, Hiroshi Tachiki +3 more | 2001-01-02 |
| 6160972 | Image forming apparatus | Katsuhiro Nagayama | 2000-12-12 |
| 6134415 | Roller/belt type multiple color image transfer apparatus including decreasing contact region widths between successive image support/transfer roller pairs and common power Supply for transfer means and charger means | Yoshie Iwakura | 2000-10-17 |
| 6118954 | Image forming apparatus having transfer roller with charge-removing and cleaning devices | Takuya Abe, Kiyoshi Toizumi, Hiromu Yoshimoto, Kouichi Yamauchi, Hiroshi Tachiki +3 more | 2000-09-12 |
| 6108514 | Sheet conveying system | Osamu Nakayama, Koichi Nakamura, Noritaka Okazaki, Masashi Hirai, Kiyoshi Toizumi | 2000-08-22 |
| 6097923 | Image forming method and apparatus | Yoshie Iwakura, Seiichi Yoshida, Hideki Ohnishi | 2000-08-01 |
| 6081686 | Image forming apparatus having transfer drum with specific construction | Takuya Abe, Kiyoshi Toizumi, Hiromu Yoshimoto, Kouichi Yamauchi, Hiroshi Tachiki +3 more | 2000-06-27 |
| 6081685 | Transfer apparatus having a transfer drum | Yoshinobu Umetani, Hideki Ohnishi, Yukikazu Kamei, Kiyoshi Toizumi, Kouichi Yamauchi | 2000-06-27 |
| 6078772 | Image-forming apparatus | Toshihiko Takaya, Seiichi Yoshida, Hideki Ohnishi, Tomohiro Oikawa, Yoshie Iwakura | 2000-06-20 |
| 6026256 | Image forming apparatus | Takuya Abe, Kiyoshi Toizumi, Hiromu Yoshimoto, Kouichi Yamauchi, Hiroshi Tachiki +3 more | 2000-02-15 |
| 6002904 | Image forming apparatus having light projecting unit for projecting light on image carrier prior to transfer of toner image | Seiichi Yoshida, Hideki Ohnishi | 1999-12-14 |
| 5812923 | Image forming apparatus equipped with register rollers for curling transfer paper | Kouichi Yamauchi, Hiroshi Tachiki, Hiromu Yoshimoto, Atsuyuki Katoh, Yuhi Akagawa +6 more | 1998-09-22 |
| 5799225 | Image forming apparatus having variable transfer and attraction voltage | Takuya Abe, Kiyoshi Toizumi, Hiromu Yoshimoto, Kouichi Yamauchi, Hiroshi Tachiki +3 more | 1998-08-25 |