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US 6,554,269 B1Granted
Airknife and vacuum control changes to improve sheet acquisition for a vacuum corrugated feed supply
AssigneeHeidelberger Druckmashinen AG
InventorsMichael T. Dobbertin, Thomas K. Sciurba
Life of this patent
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Abstract
A method of operating a vacuum corrugated belt feeder, which may or may not have a positive air pressure separator, during non-feed cycle time. “The result being” to separate a sheet from a sheet supply stack, which method comprises agitating the top sheets in the stack by actuating the vacuum and/or the positive air pressure separator during non-feed cycle time.
Claims7
An improved method of operating a feeder of sheets that comprises the steps;
- moving a sheet from a sheet supply stack to a first position;
- moving the sheet to a second position;
- the improvement comprising:
- moving the sheet at least partially from the sheet supply stack;
- replacing the sheet on the sheet supply stack, wherein the improved steps are carried out for the purpose of loosening the sheet from the sheet supply stack to insure that only one sheet is moved to the second position, and are carried out at a time when the known steps are not in process.
2 more elements
Dependencies are inferred from the claim text.