CPC B41J 31/16 (2013.01) [B05C 1/083 (2013.01); B41J 31/00 (2013.01); B41J 2/325 (2013.01); B41J 31/05 (2013.01); B41J 33/26 (2013.01); B41J 33/36 (2013.01)] | 15 Claims |
1. A coating module for variable speed ribbon coating, said coating module comprising:
a ribbon comprising an inner face and an outer face, said outer face being designed to retain ink on its surface;
a conveyor system comprising a support element holding and transporting the ribbon on its inner face;
a squeeze ink roller arranged in contact with the outer face of the ribbon, said squeeze ink roller comprising an outer layer made of elastic material;
a reservoir assembly designed to hold ink thereon and to feed the squeeze ink roller with said ink, and
a pressure controller comprising an active element for pressing the ribbon between the squeeze ink roller and the support element along a coating zone,
wherein an elasticity of the outer layer of a surface of squeeze ink roller and a surface of the support element are designed in such a way that stress applied to the ink along the coating zone in a plane perpendicular to a longitudinal axis of the squeeze ink roller is monotonic on both sides of a global maximum.
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