Patent application number | Description | Published |
20120105570 | LIGHT SCANNING UNIT AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS USING THE SAME - A light scanning unit includes a light source unit to emit a plurality of light beams, a light deflector to deflect the plurality of light beams emitted from the light source unit in a sub-scanning direction, an incident optical system to allow the plurality of light beams emitted from the light source unit to be incident on different reflection surfaces of the light deflector, and an imaging optical system that allows a plurality of light beams that are deflected by the light deflector, to be imaged on different scanning surfaces, wherein the incident optical system includes at least one incident light path changing member that folds light paths of the plurality of light beams between the light source unit and the light deflector. | 05-03-2012 |
20130141509 | LASER SCANNING UNIT AND COLOR IMAGE FORMING APPARATUS INCLUDING THE SAME - A laser scanning unit and a color image forming apparatus using the laser scanning unit. The laser scanning unit includes a deflector that is rotatable to deflect a plurality of light beams that are incident on the deflector from a plurality of light sources at an angle with respect to a sub-scanning direction; at least one optical path changing member to change an optical path of each of the light beams deflected by the deflector; and a first f-θ lens to focus the light beam that passes through the optical path changing member onto a corresponding scanning target surface. | 06-06-2013 |
20140132695 | LIGHT SCANNING UNIT AND ELECTRO-PHOTOGRAPHIC IMAGE FORMING APPARATUS EMPLOYING THE SAME - A light scanning unit and an electro-photographic image forming apparatus employing the same are provided. A light scanning unit for scanning a beam onto a scanned surface includes a light source for emitting a beam according to an image signal; an optical deflector for deflecting and scanning the beam emitted from the light source, in a main scanning direction; and a imaging optical system for imaging the beam deflected and scanned by the optical deflector, on the scanned surface, wherein, if a main scanning direction width of the beam emitted from the light source is defined as a, a sub-scanning direction width of the beam is defined as b, a main scanning incident angle of the beam incident on the scanned surface with respect to a main scanning section is defined as Φ, and a sub-scanning incident angle of the beam incident on the scanned surface with respect to a sub-scanning section is defined as β, a maximum main scanning incident angle Φ | 05-15-2014 |