Abstract
Paper wrinkle or crease is generated in the process fixing the toner to the paper. Especially, paper crease is a big trouble of printing process. This paper deals with this paper wrinkle and crease. In the first approach, a experimental apparatus is made and experiments for confirming paper crease are carried out with changing forms of roller. In the second approach, simulation model is composed of a driven rubber roller divided solid elements, a rigid cylindrical shaft and a paper divided shell elements. The simulation is conducted using explicit method by FEM software. Simulation and experiment results are compared and the relationship between roller form and paper wrinkle is discussed. Finally, conditional equation related to paper wrinkle is derived adapting buckling theory of thin plate and the mechanism of paper crease is explained by strain, contact pressure and friction on the contact area of roller and paper.
