Study on the Influence of Back Exposure on the Quality of Flexographic Platemaking

摘要

With the increasing demand for green printing and environmental protection, the application of flexographic printing is ever-growing. The purpose of this paper is to study the possibility of the standardization for the quality of flexographic platemaking, and provide basic data and reference for the platemaking process control related standard. Experiments on back exposure control and analysis of printing forme quality through four mainly used brand plates with two different thickness were conducted, the relationships between the relief height and the back exposure time, and the related imaging quality of flexographic printing forme, including small dots, fine lines, small characters, tone reproduction were studied. The results show that it is possible to specify a set of standardized imaging quality indexes for flexographic printing forme to control platemaking process which are suitable for diverse platemaking technology and plates.