谈谈胶印印刷用的润版液

胶版印刷，即平面印刷，其印版上需印刷的图文部分和空白部分都处于印版的同一平面上，利用水、墨平衡的原理实施印刷作业。实际印刷时，印版上不但要不断地沾补新的印墨，而且要不断注补新的润版液，在印版的空白部分保持良好的亲水性，防止油墨向空白部分扩散，保证印刷时印版上的水、墨平衡，达到良好的印刷质量。本文系统地介绍此印版润版液的作用、成分、功能、特性和实际应用时的注意事项，并列举市场上常见的润版液产品的品牌和性能特点。

On the Printing Plate Wetter Used in Offset Printing

In the offset printing,i.e.planographic printing,all details of the printed picture are located on a plane of the printing plate,the working mechanism of printing operation is based on the water-ink equilibrium over the surface of the printing plate.During practical printing,it is necessary to refill continuously the printing ink and also the wetter on the surface of the printing plate to ensure an adequate hydrophilic surface on the void area thus preventing the diffusion of the ink and keeping an adequate water-ink equilibrium.This paper presents a comprehensive elucidation on this printing wetter:its behavior,composition,functions,characteristics and directions for its practical use.Attached is a list of common wetter products available in the market,their assortment and properties.