TRANSPORT ROLLER UNIT, PAPER TRANSPORT DEVICE, DEVICE WITH PRINTING FUNCTION, AND PAPER TRANSPORT METHOD

摘要

PROBLEM TO BE SOLVED: To suppress the inclination of a transport target paper caused by reciprocal transport with a simple configuration.SOLUTION: A transport roller unit 1 includes: a first roller 2; and a second roller 3. A pressing force is applied to an outer circumferential surface 2a of the first roller 2 from outside. The second roller 3 has a diameter Rlarger than a diameter Rof the first roller 2. The first roller 2 and the second roller 3 are arranged to be distanced in a state in which rotational center axes Oand Oare aligned. The first roller 2 and the second roller 3 are coupled to and contact each other and integrally rotate about the rotational center axes Oand O.