| 主权项 |
1. An apparatus for flexographic printing of a web of packaging material with printing ink, the apparatus comprising:
an ink pan or chamber and an anilox roll rotary partly inside the ink chamber for picking up and transferring printing ink from the ink chamber to an impression cylinder which is rotary in transfer contact with the anilox roll, as well an additional counter pressure cylinder which is rotary adjacent the impression cylinder and which, together with the impression cylinder, forms a nip through which the web of packaging material is intended to be led for transferring printing ink from the impression cylinder to the web, the ink chamber being elongate and extending axially along the anilox roll and having an upper axial doctor blade in contact with the circumferential surface of the anilox roll, for scraping off excess ink, and a lower similarly axial doctor blade in contact with the circumferential surface of the anilox roll for scraping off residual printing ink after the transfer to the impression cylinder, and said ink chamber having a first end wall its one axial end and a second end wall at its other axial end, in at least one spray- or shower device provided with a nozzle, which has its nozzle directed towards peripheral edge regions of the circumferential surface of the anilox roll for supplying cleaning fluid, for the printing ink to these regions. |
