Optical scanner and image forming apparatus
US7515170B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2006 |
| Grant date | Apr 7, 2009 |
| Priority date | — |
| Expiry date | Mar 15, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/04758
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical scanner includes a light source unit configured to emit light; an optical system configured to cause the light emitted from the light source unit to scan an object so as to form an image on the object; and a control unit configured to control the light source unit. The light source unit includes a plurality of light emitting units arranged in a sub scanning direction, and the control unit controls the light source unit to emit light at different positions on the object by using either n (n: positive integer) light emitting units or n+1 light emitting units selected from among the plurality of light emitting units, according to a positional shift amount of the image in the sub scanning direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.