OPTICAL PRINTER HEAD AND METHOD OF LIGHTING UP OPTICAL PRINTER HEAD

摘要

An optical printer head having a structure of increasing an exposure, and forming pixels by exposing a photosensitive drum to light, comprising a ligh t emitting device array having at least two light emitting spot rows, and a ro d lens array for forming light spot rows by projecting light beam from the lig ht emitting device array onto the photosensitive drum, wherein the at least two light emitting spot rows have the same pitch in the main scanning direction parallel to the rotation direction of the drum, and light emitting spots in each light emitting spot row are arranged to align in the sub-scanning direction perpendicular to the rotation direction of the drum.