Patent ID: 8474817

Claim:
A processing apparatus of a paper sheet, comprising: an insertion slot through which the paper sheet is inserted; a conveying device comprising a stepping motor driven with a pulse signal and configured to convey the paper sheet inserted through the insertion slot; a reading device configured to read an information from the paper sheet conveyed by the conveying device; a judging device configured to judge an authenticity of the paper sheet based on the information read by the judging device; a controller configured to control a conveyance speed of the conveying device; a housing device configured to stack and house the paper sheet; a discharge detecting sensor configure to detect a discharge of the paper sheet to the housing device; and a conveying member configured to contact and guide the paper sheet inserted through a receiving port of the housing device, wherein the controller, after the information from the paper sheet is read by the reading device, increases the conveyance speed of the conveying device by changing pulse period of the pulse signal provided to the stepping motor based on judge result of the judging device and, after a back end of the paper sheet passing through is detected by the discharge detecting sensor, controls the stepping motor to rotate for a predetermined amount to convey the paper sheet until the paper sheet contacts the conveying member.