Simulation of Stick-slip Motion of Serial Printer Caused Surface Roughness

다국어 초록 (Multilingual Abstract)

A serial printer sometimes generates a vertical striped pattern in the printing image. This is known as jitter and can be considered to be caused by vibration of the print-head carriage system. The vibration of carriage is due to a lot of factors, step driving of the stepping motor, meshing between the belt and the pulley, meshing of the reduction gears, and friction between the linear sliding bearing and the sliding shaft. In this paper, the motion of the carriage is examined concerned with the influence of the carriage is examined concerned with the influence of the friction. Frictional models based on roughness theory, adhesion theory and combined both are considered. 3-D surface data generated numerically are used for calculation of friction. Simulations of carriage motion are carried out with a numerical integration method. In this simulation, N.G.(no good) shaft and normal shaft are examined for the carriage motion. It is shown that the influence of the surface waviness of sliding shaft is larger than the surface roughness.