Gravüürtrükivärvid

Gravüürtrükivärvid, also known as intaglio printing inks, are a specialized type of ink formulated for the intaglio printing process. In intaglio printing, the image to be printed is etched or engraved into a metal plate, creating recessed areas. The ink is then applied to the plate, filling these recessed areas. Excess ink is wiped from the surface, leaving only the ink within the engraved lines and cavities.

When paper is pressed against the inked plate, the recessed ink is transferred to the paper under pressure, resulting in a raised, tactile print. Gravüürtrükivärvid are designed to have specific viscosity and flow properties to effectively fill these recessed areas and achieve a clean transfer. They typically contain pigments for color, binders to adhere the pigment to the substrate and the plate, and solvents or oils to control viscosity and drying.

The composition of gravüürtrükivärvid can vary significantly depending on the printing substrate, the desired print quality, and the specific intaglio method used, such as copperplate engraving, etching, or photogravure. These inks are known for their ability to produce sharp lines, deep blacks, and rich colors, making them suitable for high-quality applications like currency printing, security documents, fine art prints, and packaging. The precise formulation ensures that the ink adheres well to the metal plate during the wiping process and transfers cleanly to the paper during impression.