A method and a pumping unit for supplying printing ink and...

B - Operations – Transporting – 41 – F

Patent

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B41F 35/00 (2006.01) B41F 31/08 (2006.01)

Patent

CA 2284508

A pumping unit (1) for supplying printing ink to a printing unit (2) is described. In order to achieve as effective a utilisation of the printing unit (2) as possible and the shortest possible time for exchanging different printing ink colours, the described pumping unit (1) is arranged with a printing ink tank (27) and a cleaning liquid tank (28). The pipe (33, 34) for sucking up or return pumping of the cleaning liquid/printing ink may be slided from a position in one or the other tank (27, 28). Process steps of inking as well as of cleaning are controlled by a central control unit (44) so that the only intervention of the operator that is necessary, is exchange of the printing ink tank (22) when a new printing ink colour is to be applied in the printing unit (2).

L'invention concerne une unité de pompage (1), destinée à fournir de l'encre d'impression à une imprimante (2). Afin d'utiliser l'imprimante (2) aussi efficacement que possible et faire en sorte que les temps de changement des différentes couleurs d'encres d'impression soient les plus courts possibles, on a monté sur l'unité de pompage (1) un réservoir (27) à encre d'impression, ainsi qu'un réservoir (28) à liquide de nettoyage. Le tuyau (33, 34) servant à aspirer ou à renvoyer par pompage le liquide de nettoyage/encre d'impression peut être coulissé d'une position où il communique avec l'un ou l'autre réservoir (27, 28). Des étapes des processus d'encrage et de nettoyage sont commandées par une unité de commande centrale (44) de façon que la seule intervention de l'opérateur consiste en un changement du réservoir à encre d'impression (22), lors de l'utilisation d'une nouvelle couleur d'encre d'impression dans l'imprimante (2).

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