APPARATUS FOR IMAGE CORRECTION OF A LASER PRINTER AND METHOD FOR THE SAME

An apparatus for image correction of a laser printer and its method. The apparatus and method are applied to a laser printer using laser or light-emitting diode (LED) beam-scanning technology for performing a printing procedure thereof. The method disposes a sensing unit inside the laser printer, uses multiple sensors of the sensing unit to receive optical signals of the scanning beam emitted from a light-emitting unit and convert the optical signals into multiple photoelectric signals, uses an image-processing unit to receive and process the photoelectric signals, converts the photoelectric signals into multiple signal stripe lines and shows the signal stripe lines on an image-displaying unit, and determines whether the light-emitting unit has disposition deviation according to the status of the signal stripe lines and adjusts the light-emitting unit's position to remove the disposition deviation.