Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8406645 | Image forming apparatus and image forming method for adjusting developing bias | Yuusuke Okuno, Kanji Nakayama, Tomo Kitada, Toru Hayase | 2013-03-26 |
| 7853161 | Image forming apparatus with toner discharge method | Toru Hayase, Kuniya Matsuura, Yuusuke Okuno, Hiromasa Ueno, Hideaki Hayashi | 2010-12-14 |
| 7324776 | Image forming apparatus, charge controlling apparatus, and image forming method | Akira Hirota, Hiroaki Umemoto, Noritoshi Hagimoto, Kuniya Matsuura, Naotoshi Kawai | 2008-01-29 |
| 7251055 | Image forming apparatus having a function for correcting color deviation and the like | Keisuke Hashimoto, Junji Nishigaki, Yoshihiko Hirota, Tomoji Tanaka, Kenichi Sawada | 2007-07-31 |
| 7197264 | Image forming apparatus | Hiroaki Umemoto, Noritoshi Hagimoto, Kuniya Matsuura, Akira Hirota, Naotoshi Kawai | 2007-03-27 |
| 7136599 | Developing apparatus, image forming apparatus, and developing method | Masahiko Matsuura | 2006-11-14 |
| 7092649 | Charging device and image forming apparatus provided therewith | Akira Hirota, Masahiko Matsuura | 2006-08-15 |
| 6982813 | Light quantity correction method for exposing device, and image forming device | Katsuyuki Hirata, Tetsuya Sakai, Tomoki Wada | 2006-01-03 |
| 6462838 | Method of and apparatus for forming an image | Katsuyuki Hirata | 2002-10-08 |
| 6388768 | Image forming apparatus which excels in reproducibility of colors, fine lines and gradations even in a copy made from a copied image | Yoshinobu Hada, Yukihiko Okuno, Masahiro Kouzaki, Katsuyuki Hirata | 2002-05-14 |
| 6285800 | Apparatus and method for processing image | Tsutomu Yamazaki, Naoki Toyoshi, Shinichi Takemoto | 2001-09-04 |
| 6094502 | Image formation apparatus that allows correction of .gamma. correction data and adjustment method thereof | Katsuyuki Hirata, Masaki Tanaka | 2000-07-25 |
| 6028957 | Image forming apparatus having a noise removing unit | Yoshinobu Hada, Masahiro Kouzaki, Yukihiko Okuno, Katsuyuki Hirata | 2000-02-22 |
| 5999279 | Image forming apparatus having an MTF correction unit | Masahiro Kouzaki, Yoshinobu Hada, Yukihiko Okuno, Katsuyuki Hirata | 1999-12-07 |
| 5966222 | Image forming apparatus having a saturation correction unit | Katsuyuki Hirata, Yoshinobu Hada, Yukihiko Okuno, Masahiro Kouzaki | 1999-10-12 |
| 5963766 | Developing device | Yukihiko Okuno, Suguru Hamamichi, Shinichi Yoshimoto, Mineyuki Sako, Yoshihiro Shojo | 1999-10-05 |
| 5949963 | Image formation apparatus exposing photoconductor according to image density data to form image thereon | Katsuyuki Hirata, Yoshinobu Hada, Hironobu Nakata, Yoshihiko Hirota | 1999-09-07 |
| 5950056 | Developing device provided with three developer transport members | Suguru Hamamichi, Mineyuki Sako, Shinichi Yoshimoto | 1999-09-07 |
| 5933255 | Digital image forming apparatus | Katsuyuki Hirata, Yoshinobu Hada, Masahiro Kouzaki | 1999-08-03 |
| 5822079 | Digital image forming apparatus with test image optimization | Yukihiko Okuno, Toshifumi Watanabe | 1998-10-13 |
| 5754920 | Image forming apparatus and image forming method | Masaki Tanaka, Atsushi Kawai, Hironobu Nakata | 1998-05-19 |
| 5715067 | Digital image forming apparatus and method with variable duty ratio | Masahiro Kouzaki, Yoshinobu Hada, Yukihiko Okuno, Katsuyuki Hirata | 1998-02-03 |
| 5694223 | Digital image forming apparatus which specifies a sensitivity characteristic of a photoconductor | Toshifumi Watanabe, Yukihiko Okuno, Masaki Tanaka, Hironobu Nakata, Katsuyuki Hirata | 1997-12-02 |