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Offset Printing

Offset printing is a widely used printing technique where the inked image is transferred (or "offset") from a plate first to a rubber blanket, then to the printing surface. When used in combination with the lithographic process, which is based on the repulsion of oil and water, the offset technique employs a flat (planographic) image carrier on which the image to be printed obtains ink from ink rollers, while the non-printing area attracts a film of water, keeping the nonprinting areas ink-free.

Advantages of offset printing compared to other printing methods include:

Consistent high image quality. Offset printing produces sharper and cleaner images and type than letterpress printing because the rubber blanket conforms to the texture of the printing surface.
Usability on a wide range of printing surfaces (including wood, cloth, metal, leather, rough paper and plastic) in addition to smooth paper.
Quick and easy production of printing plates
Longer printing plate life than on direct litho presses because there is no direct contact between the plate and the printing surface.