Patent ID: 6467766
Filing Date: 2002-10-22
Classification: B65H

Abstract:
A paper sheet feed mechanism feeding paper sheets inside a storage inside which the paper sheets are piled up one by one from the storage, said paper sheet feed mechanism comprising:a feed roller conveying an uppermost paper sheet piled among the paper sheets piled up inside the storage to a predetermined conveyance direction by being in contact with the uppermost paper sheet and rotating, a pick roller being positioned behind the feed roller in the conveyance direction and conveying the uppermost paper sheet with which the feed roller is in contact to the conveyance direction by being in contact with the uppermost paper sheet and rotating, and a conveyance mechanism conveying the paper sheet fed by the feed roller and the pick roller to the outside of the storage, wherein the feed roller is provided one or more of a predetermined number of each of high friction portion(s) having a relatively high coefficient of friction and low friction portion(s) having a relatively low coefficient of friction in the circumferential face of the feed roller alternately in the circumferential direction thereof, the pick roller is provided with one or more of a predetermined number of each of high friction portion(s) having a relatively high coefficient of friction and low friction portion(s) having a relatively low coefficient of friction in the circumferential face of the pick roller alternately in the circumferential direction thereof, the paper sheet feed mechanism comprises a drive mechanism driving the feed roller and the pick roller so that timing that the high friction portion of the feed roller comes in contact with the paper sheet and timing that the high friction portion of the pick roller comes in contact with the paper sheet are synchronized, and wherein a conveyance speed by the pick roller is faster than a conveyance speed by the feed roller.