An optical scanning apparatus includes M number of light sources that includes M number of semiconductor lasers and M number of coupling lenses, where M is a positive integer, a deflecting scanning unit that deflects laser beams from the light sources to a surface to be scanned, and a transmission-type...http://www.google.es/patents/US7450274?utm_source=gb-gplus-sharePatente US7450274 - Optical scanning apparatus, image forming apparatus, and beam positioning method
Optical scanning apparatus, image forming apparatus, and beam positioning method
