Banding reduction in electrophotographic processes using a piezoelectric actuated laser beam deflection device

摘要

This article presents an experimental study on the application of a piezoelectric laser beam deflection device to reduce banding in electrophotographic processes. Using an offline print-and-scan measurement method, the static characteristic of the deflection device is obtained. Using online measurements of the laser beam position with an optical sensor, the dynamic behavior of the device is identified. Using the identified model, a scan line spacing compensation strategy is proposed and implemented. Experimental results showed significant visual and measured improvements in test patterns and halftoned images. [References: 32]