Non-leaking printing ink trough

Claim 1

Non-leaking printing ink trough construction having an elongated cross element (2); an ink duct roller (1) extending parallel to the cross element and having an end face at each end; a doctor blade (11) extending parallel to the ink duct roller; a side wall positioned perpendicularly to the cross element, closing off the cross element laterally, and forming therewith an ink trough construction in engagement with the end faces of the duct rather, said side wall including a fixed wall portion (3) and an elastically movable wall portion (4) in engagement with a duct roller end face (1), the doctor blade (11) being longer than the duct roller (1) to form lateral projecting portions; a resilient force means (18), coupled to the elastically movable wall portion (4) to press said elastically movable wall portion against the top face of the doctor blade (11); and spring means (15) bearing on the elastically movable wall portion (4) of the side wall for pressing said elastically movable wall portion into engagement with an end face (A) of the duct roller (1), said movable portion thus sealing (a) against the end face (A) of the duct roller (1) and (b) against the top face of the doctor blade (11) to form a non-leaking end seal; and a sealing element (7) which, in plan view, is essentially T-shaped, having a cross portion and a leg portion, said cross portion forming a seal between the fixed and the elastically movable wall portions of the side wall and the blade (11), and the leg portion extending between and sealingly connecting said fixed portion and said elastically movable wall portion, while permitting movement of the elastically movable wall portion (4) with respect to the fixed portion (3) and movement of the elastically movable wall portion (4) in the direction of the leg portion of the sealing element (7).