PROCESSING SOLUTION FOR PHOTOSENSITIVE LAMINATE HAVING ALCOHOLLSOLUBLE POLYAMIDE LAYER

摘要

PURPOSE:To enhance the safety of a processing soln. capable of performing development and etching by one-stage processing by adding a neutral salt of an aromatic sulfonic acid or a carboxylic acid to the soln to lower the alkalinity. CONSTITUTION:An alcohol-soluble polyamide layer and a photosensitive resin layer contg. photosoluble o-benzoquinone azide as a photosensitive material are formed in this order to manufacture a photosensitive laminate. A neutral salt such as Na salt of an aromatic sulfonic acid such as toluenesulfonic acid or a carboxylic acid such as salicylic acid is added to an alkaline aqueous alcohol soln. which develops the resin layer and etches the polyamide layer by the one-stage processing of the laminate. Thus, the alkalinity of the processing soln. is lowered to enhance the safety, and a higher developing speed and enhanced resolving power are attained.