Automatic device to prevent overpainting in graphic arts work, consisting essentially of a carrier support of a vertical and horizontally adjustable arm, whose arm has at its end a spray gun type spray gun, in whose sprayer a liquid carrier conduit coincides, solution or emulsion that in pulverized form has to avoid overcoating, and another air duct under pressure, having an automatic air control valve that, activated by the printing machine, controls the passage of air under pressure to the sprayer, causing stopping the spraying projected onto the printed or inked sheet. (Machine-translation by Google Translate, not legally binding)
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