A procedure for transforming the principle and mode of...

B - Operations – Transporting – 41 – F

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B41F 7/26 (2006.01)

Patent

CA 2151843

The invention described herein transforms the conventional alternating feed dampening units of offset printing presses into micro-controlled continuous film dampening units incorporating the principal components and mechanisms of the original dampening units in order to preserve, among other things, perfect geometry with respect to the other parts of the press. The water take-up roller, the dampening distributor roller and the dampening form roller retain their positions with modified original mechanisms and functions. The removable module is located by using the locating devices of the original water duct roller. Its regulator roller links the water take-up roller with the transfer roller pressing against the dampening distributor roller. Its liaison roller establishes continuity on demand, between the dampening unit and the inking unit.

La présente invention permet de transformer les unités de mouillage traditionnelles à alimentation alternée des presses d'imprimerie offset en unités de mouillage à film continu micro-contrôlé incorporant les principaux composants et mécanismes des unités de mouillage d'origine, de manière à préserver, entre autres, une géométrie parfaite par rapport aux autres pièces de la presse. Le rouleau de réception (4A) d'eau, le rouleau de distribution (8A) et le rouleau de mouillage (9A) conservent leurs positions avec des mécanismes et des fonctions d'origine modifiés. Le module amovible (55) est positionné en utilisant les dispositifs de positionnement du rouleau collecteur d'eau d'origine. Son rouleau régulateur (66) relie le rouleau de réception d'eau (4A) avec le rouleau de transfert (63) pressant contre le rouleau de distribution (8A). Son rouleau de liaison (82) établit la continuité sur demande entre l'unité de mouillage et l'unité d'encrage.

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