Web

Web offset is a form of printing in which a continuous roll of paper is fed through the printing press. Pages are separated and cut to size after they have been printed. Web offset printing is used for high-volume publications such as mass-market books, magazines, newspapers, catalogues and brochures.

There are two methods of web offset printing, known as heatset and coldset. In the heatset process, the ink is dried rapidly by forced-air heating. In the  coldset process, the ink dries more slowly by ordinary evaporation and absorption. As a rule of thumb, coldest is used chiefly in the manufacture of newspapers and the like and is generally of a cruder quality, whereas heatset is used in magazine and glossy catalogue production.

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