Patent ID: 9104131
Filing Date: 2015-08-11
Classification: G03G

Abstract:
1. An optical scanning head comprising: a plurality of light-emitting element arrays that are arranged along a scanning direction, each of which includes a plurality of light-emitting elements; a light-emitting control unit that outputs a light-emitting timing signal generated based on image information to each light-emitting element of the plurality of light-emitting element arrays to control light emission of the light-emitting element, the light-emitting timing signal including a light-emitting start signal and a light-emitting end signal of the light-emitting element; a storage unit that is common to the plurality of light-emitting element arrays and stores a correction value of a light intensity variation due to an arrival time difference between the light-emitting timing signals to the plurality of light-emitting elements; and a correction unit that corrects the light-emitting timing signal based on the correction value and executes a correction for making earlier, to match the light-emitting element having the maximum light intensity in the plurality of light-emitting element arrays, an output timing of the light-emitting start signals of other light-emitting elements.