Image forming apparatus and image forming method
US7417660B2 · kind B2 · utility
0Cited by
2References
10Claims
0Family size
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Key dates
| Filing date | Aug 17, 2005 |
| Grant date | Aug 26, 2008 |
| Priority date | — |
| Expiry date | Jan 6, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/40037
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image forming apparatus generates a PWM signal corresponding to input image data and controls a timing of a light source to emit a light beam based on the PWM signal in order to perform tone reproduction. The image forming apparatus includes a data processing unit configured to generate the PWM signal for one pixel based on image data for continuous two pixels in the image data. The data processing unit selects an origin of pulse growth in generation of the PWM signal for one pixel in accordance with the image data for the two pixels to generate the PWM signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.