Patent ID: 7387199
Filing Date: 2008-06-17
Classification: B65H

Abstract:
1. A passbook conveyance roller device comprising a conveyance roller and a pinch roller, which are arranged to be opposed to each other and are arranged to convey a printed paper containing article, and wherein the conveyance roller comprises an inner ring member connected to a drive shaft, a metallic outer ring member arranged on an outer peripheral side of the inner ring member, and torque limiter means comprising at least one elastic member fixed to one of an outer peripheral surface of the inner ring member and an inner peripheral surface of the outer ring member to give elastic forces to the other of the outer peripheral surface of the inner ring member and the inner peripheral surface of the outer ring member in a plurality of positions, which are spaced circumferentially at predetermined intervals from one another and arranged in point symmetry, the torque limiter means rotating both the inner ring member and the outer ring member through the elastic member when a load torque on the outer ring member is less than a set torque set by the elastic forces of the elastic member, and generating an idle condition between the elastic member and the other of the outer peripheral surface of the inner ring member and the inner peripheral surface of the outer ring member to prevent damage to the printed paper article when a load torque on the outer ring member is equal to or larger than the set torque at a time of occurrence of a jam.