Patent ID: 7508403
Filing Date: 2009-03-24
Classification: B41J

Abstract:
1. An image forming apparatus utilizing a light-emitting diode (LED), comprising: an LED head including an LED array that has a plurality of dots, in which a resolution a (dpi) of the LED array and a resolution b (dpi) in a main scanning direction at an image data exposure satisfy a relation: a>b (a being an integral multiple of b); a lighting control unit that performs a lighting control for the LED head such that main dots used for an exposure are turned on in every {(a/b)−1} dots; and a pattern recognition unit that performs a pattern recognition with respect to a pattern in a matrix of c×d pixels (c and d being arbitrary natural numbers) around a target pixel in the image data; wherein the lighting control unit controls the lighting of the main dots and the lighting of auxiliary dots based on the pattern recognition.