Scanning optical device, image forming device and jitter correction method
US8310738B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 8, 2008 |
| Grant date | Nov 13, 2012 |
| Priority date | — |
| Expiry date | Sep 14, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/0477
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A scanning optical device includes a rotating polygonal mirror having a plurality of reflecting faces. A first light source emits a first light beam from one section obtained by sectioning the scanning optical device with a plane passing through the rotation axis of the rotating polygonal mirror. A second light source emits a second light beam from the other section. The first calculation unit calculates scan time of the first light source. The second calculation unit calculates scan time of the second light source. The jitter correction unit corrects jitter by controlling a pixel clock supplied to the first light source according to the scan time of the second light source. The jitter correction unit also corrects jitter by controlling a pixel clock supplied to the second light source according to the scan time of the first light source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.