重铬酸铵基聚合光敏胶已使用了多年,对光致不可溶性作用的根据也有了相当好的了解。近来,在制备彩色显象管的三色荧光屏时,这类材料已为人们广泛采用,通常地,荧光粉是用某种部分水解的聚乙烯醇(PVA—以下同)粘合剂粘附而用重铬酸铵(ADC—以下同)敏化的。可否用这类系统作为印刷彩色CRT像点的黑周边(所谓抑制法—rejection method)时的光敏胶也是近来探讨过的问题。除了工艺流程的重要性而外,对于用这种系统成像的根据还知道得很少。本文报导的是用三种熟知 Ammonium dichromate-based polymeric photosensitizers have been used for many years and also have a good understanding of the basis for photo-insolubility. Recently, such materials have been widely used in the preparation of three-color screens for color picture tubes. Conventionally, phosphors are adhered with a partially hydrolyzed polyvinyl alcohol (PVA-hereinafter) binder Sensitized with ammonium dichromate (ADC - the same below). The possibility of using such a system as a photosensitive gel in the printing of a black periphery of a color CRT (so-called rejection method) is also a recently-discussed problem. In addition to the importance of the process flow, little is known about the basis for imaging with such a system. This article reports three well-known