Abstract: Card transfer system in which a card is transferred may include transfer roller which touches and transfers the card, and rotary shaft on which transfer roller is fixed, and rotating member rotatably supported on rotary shaft, and drive mechanism coupled to rotating member to rotate rotating member, and clutch mechanism which interrupts the power transmission between rotary shaft and rotating member. Rotating member is rotatably supported on rotary shaft by antifriction bearings. Rotary shaft is rotatably supported by multiple bearings and, at the same time, at least bearing arranged closest to rotating member is a plain bearing or sliding bearing.

Abstract: A carrying roller for a card reader including: a rubber outer peripheral member, which is roughly cylindrical, and forms the outer peripheral side of the carrying roller; and a retention member, which has an outer peripheral surface that abuts the inner peripheral surface of the outer peripheral member and retains the outer peripheral member on the inner peripheral side of the outer peripheral member. The inner peripheral surface of the outer peripheral member has a plurality of protuberances that protrude inward in the radial direction. The outer peripheral surface of the retaining member has a plurality of grooves recessed in the radial direction and engaging with the projections. The height of the projections in the radial direction is no more than 1/3.5 of the radial thickness of the outer peripheral member in sections without projections.

Abstract: A carrying roller for a card reader including: a rubber outer peripheral member, which is roughly cylindrical, and forms the outer peripheral side of the carrying roller; and a retention member, which has an outer peripheral surface that abuts the inner peripheral surface of the outer peripheral member and retains the outer peripheral member on the inner peripheral side of the outer peripheral member. The inner peripheral surface of the outer peripheral member has a plurality of protuberances that protrude inward in the radial direction. The outer peripheral surface of the retaining member has a plurality of grooves recessed in the radial direction and engaging with the projections. The height of the projections in the radial direction is no more than 1/3.5 of the radial thickness of the outer peripheral member in sections without projections.

Abstract: Card transfer system in which a card is transferred may include transfer roller which touches and transfers the card, and rotary shaft on which transfer roller is fixed, and rotating member rotatably supported on rotary shaft, and drive mechanism coupled to rotating member to rotate rotating member, and clutch mechanism which interrupts the power transmission between rotary shaft and rotating member. Rotating member is rotatably supported on rotary shaft by antifriction bearings.