Method and apparatus for image forming with multiple laser beams
US6603116B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 7, 2002 |
| Grant date | Aug 5, 2003 |
| Priority date | — |
| Expiry date | Mar 7, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/04784
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image forming apparatus includes a light source, a light beam controlling mechanism, a sensor, and a signal controller. The light source emits parallel light beams with an angle smaller than 90° relative to a sub-scanning direction. The light beam controlling mechanism controls a scanning of the light beams. The sensor detects one of the light beams and generates a line synchronous signal. The signal controller delays the data streams and generates PLL clock signals divided into different clock signals having a same frequency and having phases sequentially varied. The signal controller selects one of the different clock signals and drives the light source with the selected clock signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.