Printing photoengraving

Ultraviolet cross-linking of PVA with dichromates is the basis for its use in photoengraving, screen printing, printed circuit manufacture, and color-television tube manufacture. 

Lichtdruck, m. photomechanical printing photographic printing, -gelatine, /. photoengraving gelatin. 

USE Manuf liq soap mordant for wood absorbing CO mercerizing cotton paint and varnish removers electroplat -big, photoengraving and lithography printing inks in analytical chemistry and in organic syntheses. Pharmaceutic aid (alkalizer). 

Photoresists find applications in several of the printing processes. The major areas of interest include printing plates, photoengraving, silkscreen printing, printed circuits, collotype, and proofing systems. 

Ferric chloride solutions are used as etchants for copper, copper alloys, Ni/Fe alloys, and steel in PC applications, electronics, photoengraving arts, and metal finishing. Current use of ferric chloride etchant in printed wiring fabrication is extremely limited in the United States because of costly disposal of the copper-containing etchant, and the much better commercial support for ammoniacal and cupric chloride etchants. There is still considerable use for alloy etching and photochemical machining applications. 

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