Basic study of sheet attitude during accelerated delivery of the nip transport mechanism

Abstract

This paper describes basic study of sheet attitude during accelerated delivery of the nip transport mechanism. The nip transport mechanism with a pair of rollers is widely used in many devices, such as automated teller machines (ATMs), printing machines, etc. In these machines, a sheet is sometimes nipped by two pairs of rollers rotating unequal speed. There are two kinds of the conveyance between rollers with unequal speed, namely, accelerated delivery and decelerated delivery. The sheet attitude during the accelerated delivery and the decelerated delivery can be changed. In this paper, we presumed the parameters that affect the sheet attitude during accelerated delivery. Furthermore, we clarified the influence by observing the sheet attitude in actual transport. As a result, we have found a method to stabilize the sheet attitude during accelerated delivery.