Selective flexographic printing with movable anilox roll

Details Selective flexographic printing with movable anilox roll Selective flexographic printing with movable anilox roll

B - Operations, Transporting

41

F

B41F 31/30 (2006.01) B41F 31/06 (2006.01)

Patent

CA 2294784

A printing apparatus includes an inker roll (16), a plate cylinder (18) and an impression cylinder (20) mounted for rotation about parallel axes. The inker roll is selectively displaced into engagement and disengagement with the plate cylinder to transfer ink to the plate cylinder and to a substrate (12) about the impression cylinder. The inker roll is moved to transfer ink only during printing cycles and is out of engagement with the plate cylinder during non- printing cycles. A doctor blade (30) engages the inker roll along a diameter thereof passing through the pivotal axis (B) of the inker roll and its axis of rotation (A) and on the side of the axis of rotation remote from its pivotal axis.

L'invention concerne un appareil d'impression qui comprend un rouleau encreur (16), un cylindre de plaque (18) et un cylindre d'impression (20) montés pour tourner autour d'axes parallèles. Le rouleau encreur est déplacé de manière sélective pour s'accrocher au cylindre de plaque ou se détacher de lui et pour transférer de l'encre sur le cylindre de plaque et sur un substrat (12) autour du cylindre d'impression. Le rouleau encreur est déplacé pour transférer de l'encre uniquement pendant les cycles d'impression ; il se détache du cylindre de plaque pendant les cycles de non-impression. Un racleur (30) entre en contact avec le rouleau encreur sur toute sa longueur, le long du diamètre de ce dernier qui passe par l'axe de pivot (B) du rouleau encreur et par son axe de rotation (A), du côté de l'axe de rotation et à distance de son axe de pivot.

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