Abstract
A serial printer using a synchronous belt in the print-head carriage system sometimes generates a vertical striped pattern in the printing image. This is known as jitter and caused by vibration of the print-head carriage system. In this paper, the relation between the jitter and the carriage's vibration is analyzed experimentally. It is found the jitter does not depend on the carriage's vibration only, but also on the density of printing image. A method with which the jitter level can be estimated is proposed. The jitter level is defined with density fluctuation ratio and a commercial image scanner is used to measure the density of printing image.
