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AssigneeHeidelberger Druckmaschinen AG
InventorsDavid Charles Burke, Matthew Todd Boyer, Clifford Allen Zabkar
Estimating the term…
A device for providing cleaning or other solution in a printing press including a spraying device, the spraying device having a liquid exit disposed along a width of the spraying device for delivering a liquid to a press component and a spray shield selectively covering at least one part of the liquid exit so as to block delivery of the liquid through the at least one part to the press component. Also disclosed is a method for providing cleaning or other fluid to a printing press component comprising the steps of spraying a fluid over a fixed width of a press component, and blocking part of the fluid over a part of the fixed width so that the part of the fluid does not reach the press component.
A device for providing cleaning or other solution in a printing press comprising:
A device for providing cleaning or other solution in a printing press comprising:
Dependencies are inferred from the claim text.
From the US filing history. Foreign family members aren’t listed.
Cleaning arrangements or devices
Characterised by the methods or devices: spraying devices
Printing machines or presses
Indexing scheme relating to printing, lining machines, typewriters, and to stamps
Term ended 29 Nov 2020 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
1. Field of the Invention
The present invention relates generally to printing presses and more particularly to a device and method for providing a liquid to a cylinder of a printing press.
2. Background Information
Preferred embodiments of the present invention are described below by reference the following drawings, in which:
FIG. 1 shows a side view of a lithographic offset print unit having a blanket cleaning device according to the present invention;
FIG. 2 shows a first embodiment of the device according to the present invention;
FIG. 1 shows a preferred embodiment of the present invention used in an offset lithographic print unit 3. A web 1 passes through blanket cylinders 10, 20, which may have flat or tubular blankets fastened thereon. The blankets are contacted by plates on plate cylinders 12 and 22, respectively. Each plate cylinder is dampened with a dampening unit 14, 24.
During a printing operation, ink and dampening solution are applied to the plate cylinder 12, so that an image from the plate cylinder 12 is transferred to a blanket on blanket cylinder 10 and then to the web 1.
When a blanket on the blanket cylinder needs to be cleaned, cleaning devices 16 and 26 are moved into an engaged position with their respective blanket cylinders 10, 20. In the engaged position, brushes 19, 29 extending over the width of the blanket cylinders 10, 20, respectively, are engaged with the blankets. Brushes 19, 29 can rotate during a cleaning operation to clean the blankets.