Patent ID: 6799508
Filing Date: 2004-10-05
Classification: B41F

Abstract:
Inking device having a rotary drum (2), called anilox roll, of a flexographic printing machine, of the kind of a device called doctor blade chambers comprisinga closed box (4,6) extending longitudinally and supported by a frame (8) by the intermediary of a moving means (10), for the application of the moving means (10) against the anilox roll (2) in the kind of enveloping in a sealing way one part of the rotation surface of the anilox roll (2), called inking zone, wherein the said box (4,6) defines and delimits an interior space, called principal chamber, intended to be the place of a circulation of the ink and being furnished for this purpose with a feeding conduit (12) for the ink and with a discharge conduit (14) for the ink, as well as a pair of longitudinal blades, called positive blade (16) for that blade intended to be located upstream of the inking zone and, respectively, negative blade (18) for that blade located downstream of the inking zone, characterized in that the principal chamber is furnished with means (32, 34) for providing the place of an ink circulation at atmospheric pressure and is divided into two superposed chambers (20, 22) communicating between themselves by ink circulation channels (24) by simple gravity, from the upper chamber (20), called supply chamber, relative to the lower chamber (22), called or discharge chamber, wherein the two said chambers (20, 22) are separated one from the other by a blade (26), called retaining blade, for furnishing an ink reservoir (28) between the two chambers (20, 22) and upstream of the negative blade (18), of such kind that the ink can circulate by simple gravity in the interior of the box (2,4) and that a reservoir of the ink (28) is furnished for the inking of the anilox roll (2).