DEVICE FOR LASER SCANNING USING PLURAL LASER BEAM MODULES AND LASER BEAM PRINTER CONTAINING LASER SCANNING DEVICE

摘要

PURPOSE: A laser scanning device using plural laser beam modules is provided to improve a resolution and an output speed of a laser beam printer. CONSTITUTION: A laser scanning device comprises:a laser beam generating instrument inputting bit data of plural lines fed from a graphic engine for modulating to each laser beam; a polygonal mirror deflecting the plural outputted laser beams to an angle corresponding to a rotary speed and direction for outputting; and an image forming lens scanning to a photo sensitive drum for forming an image on a certain location of the photo sensitive drum.