Patent ID: 8502849
Filing Date: 2013-08-06
Classification: B41J,G03G,H04N

Abstract:
1. A light-emitting device comprising: a plurality of light-emitting elements arrayed in line; and a light-up signal wiring including block wirings that connect the plurality of light-emitting elements divided into a plurality of blocks being units for controlling turning on and off of the light-emitting elements, and that supply electric power for light emission to the light-emitting elements belonging to each of the blocks, and a main wiring that extends from a feeding point and to which the block wirings are connected; a resistance distribution in the light-up signal wiring being set so that a difference between a first difference and a second difference is small, the first difference being a difference between a largest value and a smallest value of currents flowing to the light-emitting elements being lighted up when all the light-emitting elements belonging to one of the blocks are lighted up, the second difference being a difference between a largest value and a smallest value of currents flowing to the light-emitting elements being lighted up when the light-emitting elements included from any one of both ends to a center of the one of the blocks are lighted up.