Development of paper feed system focusing on dynamic characteristics

Abstract

FRR (Feed & Reverse Roller) paper separation mechanism has been commonly used in MFP (Multi-Function-product). The FRR mechanism has been designed using a paper feed operation diagram obtained by static force balance. MRR (Motored Reverse Roller) mechanism has been proposed in order to meet the demand for high productivity and low maintenance costs. In the MRR mechanism, the reverse roller is driven by a DC motor with a constant torque. However, The MRR mechanism designed by the conventional method has a problem that the desired separation performance cannot be satisfied in a high velocity and a space-saving layout. Therefore, it is necessary to consider not only static force balance but also dynamic characteristics. In this paper, with the aim of proposing design methods for the FRR and MRR, we propose a new evaluation index derived by a mathematical model that considers dynamic characteristics, and report the results of confirming the effectiveness of the evaluation index by experiments.