Patent ID: 8687229

Claim:
An image scanning apparatus which scans an image of a document, the image scanning apparatus comprising: a light source including at least three light emitting elements of red, green, and blue, which are sequentially lit up at intervals of a first time; a light emitting time control unit to control a light emitting time of the at least three light emitting elements such that the first time is shorter than a second time by a predetermined value, the second time being a value obtained by dividing, by 3, a predetermined time that is required to scan an image of a line of the document; a light intensity control unit to control a light intensity of the at least three light emitting elements such that an intensity of light irradiated from the at least three light emitting elements is increased according to the predetermined value; a sensor array to transform an image formed by light reflected from the document into an electric signal according to results of control of the light emitting time and the light intensity; and an output unit to output image data corresponding to the electric signal.