Engraving of Rotogravure Cylinders

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The term gravure refers to a printing process. It is an intaglio printing process where the image is engraved onto the surface of an image carrier below its nominal surface. When the process is carried out on a continuous web or substrate, we need to use a rotary cylindrical printing plate or roller that is called a printing cylinder. This process is termed rotogravure when it uses such a cylinder for continuous roll-to-roll printing. It is sometimes referred to as photogravure because it uses a photochromatic principle for engraving the cylinder but this term has now come to represent only the original process of etching a flat copper plate that was developed to produce artistic prints (the precursor to the rotogravure process). ...cont´d

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