Issued Patents All Time
Showing 26–50 of 65 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8929759 | Image forming apparatus and density change suppressing method | Muneaki Iwata, Kazuhiro Akatsu, Masaaki Ishida, Hayato Fujita | 2015-01-06 |
| 8928715 | Light source driver, light source-driving method, image-forming apparatus, light source-driving circuit, and optical scanner | Masaaki Ishida, Muneaki Iwata, Hayato Fujita | 2015-01-06 |
| 8896648 | Laser driving unit and image forming apparatus | Masaaki Ishida | 2014-11-25 |
| 8811441 | Laser driving device, optical scanning device, image forming apparatus, and laser driving method | Masaaki Ishida | 2014-08-19 |
| 8687036 | Light source driver, light source device, light scanning device and image forming apparatus | Masaaki Ishida, Jun Tanabe | 2014-04-01 |
| 8648892 | Image forming apparatus to detect and correct density variations in a developed image | Seizo Suzuki, Masaaki Ishida, Kazuhiro Akatsu, Muneaki Iwata, Hayato Fujita | 2014-02-11 |
| 8610971 | Image forming apparatus | Masaaki Ishida, Yasuhiro Nihei, Muneaki Iwata | 2013-12-17 |
| 8446444 | Optical scanning device and image forming apparatus | Masaaki Ishida, Yasuhiro Nihei, Dan Ozasa, Jun Tanabe | 2013-05-21 |
| 8310516 | Light scanning apparatus, light scanning method, image forming apparatus, color image forming apparatus, and recording medium having program | Jun Tanabe, Masaaki Ishida, Yasuhiro Nihei | 2012-11-13 |
| 8310513 | Light-source driving device, optical scanning device, and image forming apparatus | Yasuhiro Nihei, Masaaki Ishida | 2012-11-13 |
| 8300075 | Laser driving device, optical scanning device, and image forming apparatus | Masaaki Ishida | 2012-10-30 |
| 8270026 | Light source driving device with relationship-based drive signal generating circuit, optical scanning device, and image forming apparatus | Yasuhiro Nihei, Masaaki Ishida, Dan Ozasa, Jun Tanabe | 2012-09-18 |
| 8253768 | Optical scanner and image forming apparatus | Masaaki Ishida, Yasuhiro Nihei, Jun Tanabe | 2012-08-28 |
| 8237760 | Light-source driving device, optical scanning device, and counting method | Yasuhiro Nihei, Dan Ozasa, Jun Tanabe, Masaaki Ishida | 2012-08-07 |
| 8207996 | Light source device, optical scanning device, and image forming apparatus | Shinsuke Miyake | 2012-06-26 |
| 8089665 | Optical scanning device moving gravity center of pixel in sub-scanning direction, image forming apparatus having light sources, and method | Masaaki Ishida, Yasuhiro Nihei, Jun Tanabe | 2012-01-03 |
| 8072667 | Optical scanning device and image forming apparatus | Mitsuo Suzuki | 2011-12-06 |
| 8005321 | Pixel clock generator, optical scanner, and image forming apparatus | Masaaki Ishida, Yasuhiro Nihei, Dan Ozasa | 2011-08-23 |
| 7995251 | Optical scanning device, optical scanning method, and image forming apparatus | Jun Tanabe, Masaaki Ishida, Yasuhiro Nihei | 2011-08-09 |
| 7973817 | Pixel clock and pulse-modulation-signal generating device, optical scanner, and image forming apparatus | Yasuhiro Nihei, Masaaki Ishida, Dan Ozasa | 2011-07-05 |
| 7936367 | Image forming apparatus controlling the output level of the light source | Masaaki Ishida, Yasuhiro Nihei, Dan Ozasa, Jun Tanabe | 2011-05-03 |
| 7936493 | Dot position correcting apparatus, optical scanning apparatus, imaging apparatus, and color imaging apparatus | Masaaki Ishida, Yasuhiro Nihei, Dan Ozasa | 2011-05-03 |
| 7920305 | Optical scanning device, optical scanning method, computer program product for executing optical scanning method, recording medium with computer program recorded thereon, image forming apparatus, and color image forming apparatus using the same | Masaaki Ishida, Yasuhiro Nihei, Jun Tanabe | 2011-04-05 |
| 7834902 | Pixel clock creation method, pixel clock creation device, optical scanning device, and image forming apparatus | Yasuhiro Nihei, Masaaki Ishida, Dan Ozasa | 2010-11-16 |
| 7826110 | Light scanning apparatus, light scanning method, image forming apparatus, and color image forming apparatus | Jun Tanabe, Masaaki Ishida, Yasuhiro Nihei | 2010-11-02 |