Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11822987 | Processing device, image forming apparatus, image forming operation setting method, and storage medium | Koji Washio | 2023-11-21 |
| 11167563 | Ink-jet recording apparatus, ink-jet recording method, and ink-jet recording program | — | 2021-11-09 |
| 9880487 | Image forming apparatus, method for controlling image forming apparatus, and program for controlling image forming apparatus | Munenori Nakano, Hironori Akashi, Kenji Tsuru, Yoshinori Tsutsumi | 2018-01-30 |
| 9846398 | Image forming apparatus | Hironori Akashi | 2017-12-19 |
| 8543022 | Image forming apparatus | Mitsuru Obara, Shigeki Naiki, Yusuke Mamiya | 2013-09-24 |
| 8422085 | Image reader and image forming apparatus | Tetsuya Sakai, Shigeki Naiki | 2013-04-16 |
| 8112007 | Image forming apparatus, tone correction method using tone patches and alignment markers, and computer-readable recording medium recorded with a tone correction program using tone patches and alignment markers | Tetsuya Sakai, Soh Hirota, Takashi Harashima, Kazuomi Sakatani | 2012-02-07 |
| 8090281 | Image forming apparatus and tone correction method | Soh Hirota, Tetsuya Sakai, Takashi Harashima, Kazuomi Sakatani | 2012-01-03 |
| 7983507 | Image fo ming device and image forming method | Tetsuya Sakai, Kazuomi Sakatani, Soh Hirota, Takashi Harashima | 2011-07-19 |
| 7676163 | Image forming apparatus and image forming method | Kazuomi Sakatani, Soh Hirota, Mitsuru Obara, Masaki Tanaka | 2010-03-09 |
| 7522864 | Image forming apparatus and image forming method | Kazuomi Sakatani, Soh Hirota, Mitsuru Obara, Masaki Tanaka | 2009-04-21 |
| 7248805 | Image forming apparatus and developing unit | Soh Hirota, Masaki Tanaka, Kazuomi Sakatani, Mitsuru Obara | 2007-07-24 |
| 7212752 | Image forming apparatus and a developing apparatus having a unit for determining a mixture ratio of two types of magnetic toner based on magnetic permeability and amount | Soh Hirota, Masaki Tanaka, Kazuomi Sakatani, Mitsuru Obara | 2007-05-01 |
| 6891641 | Method and apparatus for converting number of colors and processing image data | — | 2005-05-10 |
| 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, Kentaro Katori, Katsuyuki Hirata | 2002-05-14 |
| 6028957 | Image forming apparatus having a noise removing unit | Kentaro Katori, Yoshinobu Hada, Yukihiko Okuno, Katsuyuki Hirata | 2000-02-22 |
| 5999279 | Image forming apparatus having an MTF correction unit | Yoshinobu Hada, Yukihiko Okuno, Kentaro Katori, Katsuyuki Hirata | 1999-12-07 |
| 5995248 | Image forming device and method having MTF correction | Kentro Katori, Yoshinobu Hada, Yukihiko Okuno, Katsuyuki Hirata | 1999-11-30 |
| 5966222 | Image forming apparatus having a saturation correction unit | Katsuyuki Hirata, Yoshinobu Hada, Kentaro Katori, Yukihiko Okuno | 1999-10-12 |
| 5933255 | Digital image forming apparatus | Katsuyuki Hirata, Yoshinobu Hada, Kentaro Katori | 1999-08-03 |
| 5715067 | Digital image forming apparatus and method with variable duty ratio | Kentaro Katori, Yoshinobu Hada, Yukihiko Okuno, Katsuyuki Hirata | 1998-02-03 |
| 5633953 | Image processing apparatus having improved color-reproducibility of color image | — | 1997-05-27 |
| 5446476 | Color image forming apparatus | — | 1995-08-29 |