Patent ID: 6425326
Filing Date: 2002-07-30
Classification: B41F

Abstract:
An inking unit in a printing machine having a printing form cylinder, the inking unit comprising:at least one ink applicator roller group having a plurality of ink applicator rollers; at least one other ink applicator roller separate from said at least one ink applicator roller group; a throw-off device for throwing said plurality of ink applicator rollers off the printing form cylinder; said throw-off device including a roller throw-off cam rotatably mounted and rotatable into a first rotational position of said roller throw-off cam and into a second rotational position of said roller throw-off cam, and said throw-off device including at least two operating cylinders driven by a pressurized fluid; said at least two operating cylinders disposed in one of tandem and series and connected to said roller throw-off cam for rotating said roller throw-off cam selectively into said first rotational position and into said second rotational position; and said roller throw-off cam being contoured for retaining both said plurality of ink applicator rollers and said at least one other ink applicator roller in contact with the printing form cylinder in said first rotational position, and for throwing said plurality of ink applicator rollers off the printing form cylinder and retaining said at least one other ink applicator roller in contact with the printing form cylinder in said second rotational position.