Photoengraving machine and procedure.

摘要

Photoengraving machine and procedure. The invention consists of a photoengraving machine and procedure that comprises a receptacle containing an immersed heat exchanger and automatic temperature regulator with a resistance. The chemical process consists of immersing zinc or magnesium plates using two plate-holders with swinging arms which are given a certain rotation by means of an asynchronous motor, possessing an adjustable agitator for creating an even etch. The process is directed or controlled by means of an automatic temperature control button and a thermometer. The photoengraving process is based on the chemical reaction between acid and previously treated and partially protected sheet metal. <IMAGE>