An improved electrocoagulation printing method comprises the steps of a) providing a positive electrode having a passivated surface moving at substantially constant speed along a predetermined path; b) coating the positive electrode surface with a coating agent containing silicon oxide and an oily substance to form on the surface micro-droplets of the coating agent; c) forming on the positive electrode surface having micro-droplets thereon a plurality of dots of coagulated ink representative of a desired image, by electrocoagulation of an electrolytically coagulable printing ink comprising an electrolytically coagulable polymer, a liquid medium, a soluble electrolyte and a coloring agent; and d-1) bringing a substrate into contact with the positive electrode surface to cause transfer of the dots of coagulated ink from the positive electrode surface onto the substrate and thereby imprint the substrate with the image.
The method prevents anode abrasion and pitting during electrocoagulation printing.
一种改进的电凝固印刷方法包括以下步骤:a) 提供一个具有钝化表面的正电极,以基本恒定的速度沿预定路径移动;b) 在正电极表面涂上含有氧化
硅和油性物质的涂层剂,以便在表面上形成涂层剂的微滴;c) 通过电凝固可电解凝固印刷油墨(包括可电解凝固聚合物、液体介质、可溶性电解质和
着色剂),在具有微滴的正极表面上形成代表所需图像的多个凝固油墨点;以及 d-1) 将基板与正极表面接触,使凝固油墨点从正极表面转移到基板上,从而在基板上印上图像。
该方法可防止电凝印刷过程中阳极磨损和点蚀。