Patent ID: 8499918

Claim:
A paper sheet processing apparatus comprising: an insertion slot into which a paper sheet is inserted; a conveyance mechanism which is capable of conveying the paper sheet having been inserted from the insertion slot; a reading device which reads the paper sheet being conveyed by the conveyance mechanism; and a converter which converts an image having been read by the reading device into data including color information having brightness for each pixel of a unit of a predetermined size; an authenticity judging unit which determines an authenticity of the paper sheet based on a density value for each pixel having been converted by the converter and a density value for each pixel of a reference paper sheet; a damage determination unit which determines presence or absence of a damage of the paper sheet based on a density value for each pixel in a portion having been read and a density value for each pixel as a reference of a corresponding portion to the portion having been read before the reading device completes reading of the paper sheet; and a control unit which controls conveyance of the paper sheet by the conveyance mechanism based on a determination result by the damage determination unit.