Patent ID: 7969626
Filing Date: 2011-06-28
Classification: H04N

Abstract:
1. A method of scanning an image on an original, comprising the steps of: using an optical sensor comprising three line arrays of sensor elements for each of three basic colors to generate pixel values of the scanned image, the three line arrays being arranged in parrallel at slightly different positions along a direction of relative movement of the original and the optical sensor, wherein each pixel value represents an optical density of a pixel of the image; scanning each pixel by using a corresponding one of the sensor elements of only one of the three line arrays without using the rest of the sensor elements; generating each pixel value mainly on the basis of a signal of the corresponding one of the sensor elements of the only one of the three line arrays; and using each of the sensor elements of each of the three line arrays for each of the basic colors to generate pixel values representing substantially different parts of the image.