Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6078759 | Image forming system including means for inhibiting or releasing one of a plurality of image forming apparatuses | Takeshi Satake, Naoki Ohashi, Yoshikazu Watanabe | 2000-06-20 |
| 6041214 | Image forming apparatus capable of improving ease of use in mail bin mode | Teruhiko Fujikura, Makoto Fujii, Kenji Matsuhara, Munehiro Natsume | 2000-03-21 |
| 5724627 | Image forming apparatus which calculates toner consumption in accordance with tone correction | Yukihiko Okuno, Masaki Tanaka | 1998-03-03 |
| 5708918 | Image formation apparatus that can maintain appropriately toner density in developing device | Yukihiko Okuno, Masaki Tanaka, Atsushi Kawai, Toshifumi Watanabe | 1998-01-13 |
| 5619308 | Electrophotographic image forming apparatus adjusting image forming means based on surface voltage of photoconductor | Takeru Kinoshita, Hideaki Kodama | 1997-04-08 |
| 5539500 | Image forming apparatus with humidity controlling device | Suguru Hamamichi, Takeru Kinoshita, Takanobu Yamada, Hideo Kitakubo | 1996-07-23 |
| 5530530 | Apparatus for measuring developer density | Masaki Tanaka, Atsushi Kawai, Tetsuya Sakai, Yukihiko Okuno | 1996-06-25 |
| 5523832 | Electrophotographic image forming apparatus with controlled mixing of developer | Suguru Hamamichi, Naotoshi Kawai, Yoshihito Aoki | 1996-06-04 |
| 5383007 | Apparatus for measuring developer density by reflected light from the developer illuminated through a detection window | Kouichi Etou | 1995-01-17 |
| 5276481 | Method and apparatus for optically measuring toner density | Kouichi Etou | 1994-01-04 |
| 5253031 | Method of forming a reference pattern for adjusting image density in copying machines | Keiji Kusumoto, Katsuhiko Takeda, Hiroyuki Ideyama, Shizuo Yuge | 1993-10-12 |
| 5216256 | Belt position detecting device using timing measurement | Keiji Kusumoto, Takahisa Nakanishi | 1993-06-01 |
| 5182599 | Multi-color image forming apparatus and method of setting image data for same | — | 1993-01-26 |
| 5138392 | Image forming apparatus with a fixing device capable of fixing a transparent member | Keiji Kusumoto, Hiroyuki Ideyama | 1992-08-11 |
| 5117259 | Apparatus for measuring developer density | Kouichi Etou, Hideo Kitakubo | 1992-05-26 |
| 5063410 | Image forming apparatus having a plurality of removable developing devices | Keiji Kusumoto | 1991-11-05 |
| 4955317 | Image forming apparatus having a plurality of developing units each containing two-component developer | Yoshihiko Hatta | 1990-09-11 |
| 4928136 | Image forming apparatus | Keiji Kusumoto | 1990-05-22 |
| 4912507 | Electrophotographic copying apparatus for forming an image without any unnecessary shadow region | — | 1990-03-27 |
| 4896192 | Image forming apparatus | — | 1990-01-23 |
| 4890138 | Image forming apparatus having a plurality of developing devices | Hirohisa Miyamoto | 1989-12-26 |
| 4866474 | Copying apparatus capable of forming a composite image of an outline image and a normal image | Toshikazu Higashi, Yasuyuki Matsuuchi, Yoshihiko Hatta, Masazumi Ito | 1989-09-12 |
| 4772914 | Electrophotographic copying apparatus | Kaoru Hashimoto | 1988-09-20 |