Patent ID: 7158165
Filing Date: 2007-01-02
Classification: H04N

Abstract:
1. A laser beam scanner that scans a plurality of laser beams in a main scanning direction, comprising: a plurality of light sources, each light source emitting a laser beam of the plurality of laser beams; a first converging unit converging the emitted plurality of laser beams in a sub-scanning direction; a deflector that deflects the plurality of laser beams in a scanning direction; a second converging unit that converges the plurality of laser beams in the scanning direction and the sub-scanning direction; a photosensitive member onto which the plurality of laser beams are converged by the second converging unit; a detector that receives the deflected plurality of laser beams converged at least in the scanning direction by the second converging unit; and a third converging unit that converges the plurality of laser beams at least in the sub-scanning direction, wherein a width of the converged plurality of laser beams in the sub-scanning direction on the detector is less than a width of the plurality of laser beams in the sub-scanning direction on the photosensitive member.