抄録
Paper feeding systems with rubber-covered roller drive are widely used in information processing devices such as copy machines, printers and ATM. It is important in their designs to control the paper velocity with precision. Accordingly, the experimental verification is carried out to estimate the effects of the normal load between two rollers, the back tension of a paper sheet and also the change of the frictional coefficient on the velocity ratios of the paper translation to the roller rotation. Next, the behaviors of a rubber-covered roller driving a loaded paper sheet together with a rigid roller are simulated in transition from the micro-slip contact to the rolling contact with non-linear finite element analyses. And furthermore, the variations of the shearing stress distributions and the deformations of the rubber as well as the local slippage in the various kinds of conditions are investigated by enforcing the rotating condition on the rubber-covered roller. As a result, the effects of the normal load, the tension force and the driving configuration on the velocity ratios are studied by using the presented mechanical model, which is based on the deformation mode and the micro-slip zone in the contact nip.
