Device for two-sided printing
AssigneeHeidelberger Druckamschinen AG
InventorTHOMAS SCHMIDT
Life of this patent
Estimating the term…
Abstract
A device for two-sided printing of sheet-shaped printing substrates includes an impression cylinder on which the printing substrate is guided through more than 360°. As a result of being guided through more than 360°, the second side of the sheet is moved into an effective region of an ink application unit that has already printed a first side of the printing substrate as it was guided on an upstream impression cylinder.
Claims11
A device for two-sided printing of sheet-shaped printing substrates, the device comprising:
- an upstream impression cylinder;
- an ink application unit having an effective region, said ink application unit initially printing a first side of the printing substrate on said upstream impression cylinder in said effective region;
- and
- an impression cylinder guiding the printing substrate thereon through more than 360° and moving a second side of the printing substrate once again into said effective region of said ink application unit.
A method for two-sided printing of sheet-shaped printing substrates, the method comprising the following steps:
- providing an upstream impression cylinder, a downstream impression cylinder and an ink application unit having an effective region;
- initially printing a first side of the printing substrate on said upstream impression cylinder in said effective region of said ink application unit;
- then guiding the printing substrate on said downstream impression cylinder through more than 360° and moving a second side of the printing substrate once again into said effective region of said ink application unit;
- and
- then printing the second side of the printing substrate on said downstream impression cylinder in said effective region of said ink application unit.
Dependencies are inferred from the claim text.