Patent ID: 8279503
Filing Date: 2012-10-02
Classification: B65H,G06K,H04N

Abstract:
1. A sheet media reading control method comprising: conveying a sheet medium on which magnetic ink characters are printed through a transportation path; reading the magnetic ink characters and an image of the sheet medium using a magnetic head and an image sensor head located along the transportation path; extracting partial scanned image data containing at least an outside edge part of the sheet medium from the scanned image data captured by the image sensor head; executing a skew evaluation based on the partial scanned image data to detect if the sheet medium is conveyed skewed at a skew angle exceeding an allowable skew angle; and invalidating at least the magnetic ink character data captured by the magnetic head from sheet media that are determined by the skew evaluation to be skewed at a skew angle exceeding the allowable skew angle; wherein rectangular sheet media are conveyed standing through the transportation path; and a portion of the scanned image data that contains at least an image of the bottom edge of the sheet medium when the sheet medium is conveyed normally is used as the partial scanned image data; and further comprising: determining if the sheet medium is skewed based on pixel position information and pixel brightness information in the bottom edge image of the sheet medium.