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plate

printing
Also known as: printing plate

Quick Summary

A printing plate is a surface used in printing to transfer ink to paper or another material. In letterpress printing, the plate has a raised surface that receives ink and presses it onto the paper. For offset printing, the plate is flat, with areas treated to either attract or repel ink based on their chemical properties, typically utilizing the principle that water and grease do not mix.123

Plates can be made from various materials, including metal (like zinc, aluminum, copper, magnesium, or steel) and plastic. The preparation methods vary, involving techniques like stereotyping, electrotyping, photoengraving, and direct imaging processes. These processes create the specific surface characteristics needed to hold and transfer ink accurately for printing texts and illustrations.4231

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