Inking unit in a printing machine
AssigneeHeidelberger Druckmaschinen AG
InventorsFelix Dorenkamp, Jens Knepper
Life of this patent
Estimating the term…
Abstract
An inking unit in a printing machine includes a throw-off device for throwing an ink applicator roller group off a printing form cylinder, the throw-off device including a rotatable roller throw-off cam contoured so that, in a first rotational position of the cam, all the ink applicator rollers are in contact with the form cylinder and, in a second rotational position of the cam, the ink applicator roller group is thrown off the form cylinder and at least one ink applicator roller is in contact with the form cylinder; and a printing machine, especially an offset printing machine, having at least one inking unit with the foregoing features.
Claims9
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.
A printing machine, comprising:
- a printing form cylinder;
- and
- an inking unit, said inking unit including:
- 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.
Dependencies are inferred from the claim text.