Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7339697 | Apparatus for and method of recording image based on detected recording duty ratio | Takeshi Fujii, Youichi Hatano, Katsuto Sumi, Akiko Yamashita | 2008-03-04 |
| 7250961 | Light beam scanning method and apparatus compensating for defects | Katsuto Sumi | 2007-07-31 |
| 6898335 | Optical modulator, exposure head and image recording apparatus | Mitsuru Sawano | 2005-05-24 |
| 6717605 | Focal position adjusting apparatus, exposure head, and image recording apparatus | — | 2004-04-06 |
| 6664999 | Image-recording device and method | Masahiro Ohba, Ichirou Miyagawa | 2003-12-16 |