Method and apparatus for use in offset printing

B - Operations – Transporting – 41 – N

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B41N 3/03 (2006.01) B41C 1/05 (2006.01) B41C 1/10 (2006.01)

Patent

CA 2228523

A method used in offset printing utilizes an electrically encoded image, stored in an electronic memory (34) to be transferred to a printing substrate (58) during a coating application in an offset printing process. An offset printing blanket (18) is attached under tension to a blanket cylinder (12) of an offset printing machine. After attachment of the blanket (18) to the cylinder, the blanket is automatically cut in accordance with the electrically encoded image. Subsequently, sections of the blanket (18) are removed along cut lines made in the outer layer (16) during the cutting thereof.

Selon un procédé utilisé en impression offset, on fait appel à une image codée électriquement et mémorisée dans une mémoire électronique (34), qui doit être transférée à un substrat d'impression (58) au cours de l'application d'une matière d'enduction. Un blanchet d'impression offset (18) est fixé sous tension à un cylindre porte-blanchet (12) d'une machine à impression offset. Une fois le blanchet (18) fixé audit cylindre, il est automatiquement coupé en conformité avec l'image codée électriquement. Des sections du blanchet (18) sont ultérieurement enlevées le long de lignes de coupe pratiquées dans la couche externe (16) lorsque le blanchet est coupé.

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