Optical scanning device and image forming apparatus
US8446444B2 · kind B2 · utility
1Cited by
17References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 23, 2009 |
| Grant date | May 21, 2013 |
| Priority date | — |
| Expiry date | Dec 21, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/127
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A deflector deflects a light beam emitted from a light source including a plurality of light-emitting units. A scanning optical system focuses the light beam deflected by the deflector on a scanning target surface. A monitoring photoreceiver receives a part of a light beam deflected by the deflector and directed toward an area within a scanning area outside an image area. A detecting unit individually detects emission powers of at least two light-emitting units based on an output signal of the monitoring photoreceiver in a single sweep of scanning.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.