Inking method and device for printing machine
OwnerGeorges Mourrelloneinventor
Life of this patent
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Abstract
Method for applying a thin film of a high viscosity liquid to a moving surface by means of an inking roller having a flexible outer cover and that is in contact with other rollers. A layer of predetermined thickness of the liquid is deposited on a supply roller having a tangential speed relatively slower than that of the inking roller. The supply roller supplies liquid over a contact area of the contacting rollers and the liquid product is transferred and spread into a thinner layer on the inking roller, either directly or indirectly.
Claims11
Apparatus for applying a thin film of a high viscosity ink to a rotatable printing plate, said apparatus comprising:
- (a) a cylindrical inking roller having a flexible cover adapted to contact a printing plate;
- (b) a cylindrical supply roller having a rigid outer surface;
- (c) means for causing said supply roller to contact under pressure, said flexible cover of the inking roller along a contact zone;
- (d) means for rotating said inking roller in an opposite direction and at the same peripheral velocity as the printing plate and for rotating said supply roller at a peripheral velocity lower than the peripheral velocity of the inking roller;
- (e) means for providing on said supply roller and ahead of said contact zone a film of ink having a predetermined thickness from a mass of ink in contact with the surface of the supply roller and not in contact with the inking roller;
- and
- (f) means positioned ahead of said contact zone for removing from the periphery of the inking roller ink that remains on the inking roller after it has contacted the printing plate.
Dependencies are inferred from the claim text.