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US 5,626,077 AGranted
Method for controlling sheet feed
AssigneeMAN Roland Druckmaschinen AG
InventorJoachim Muller
Life of this patent
Estimating the term…
Abstract
A method for controlling the sheet feed in an offset printing machine. A controller, in conjunction with various sensing devices, is utilized to determine the presence of double or misfed sheets as the sheets are removed from a sheet stack in a feeder unit of the printing machine. The controller then, through various actuating devices, shuts down various printing machine functions in order to complete the printing of the sheets ahead of the double or misfed sheets.
Claims3
A process for controlling the sheet feed in an offset printing machine comprising:
- transporting sheets from a feeder stack of a feeding unit over a predetermined conveyance stretch to the offset printing machine;
- detecting the presence of double or misfed sheets within the predetermined conveyance stretch;
- terminating the transporting of sheets from the feeder stack to the offset printing machine upon the detection of double or misfed sheets;
- conveying the sheets preceding the detected double or misfed sheets into the offset printing machine;
- terminating the ink feed in the offset printing machine prior to the conveyance of a last sheet preceding the double or misfed sheets into the offset printing machine;
- and
- stopping the conveying of the sheets into the offset printing machine when the double or misfed sheets reach the printing machine.
4 more elements
Dependencies are inferred from the claim text.