System and method for feeding and transporting documents including document trailing edge detection by sensing an air flow disruption while the document is still being fed from the document stack
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United States of America Patent
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Jul 4, 2006
Grant Date -
N/A
app pub date -
Dec 26, 2002
filing date -
Dec 26, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A system and method for feeding and transporting documents are provided. The method includes directing airflow to a fixed location upstream of a feeder at a stack of documents such that a document trailing edge passing the fixed location causes a disruption in the airflow. The method further comprises sensing the airflow disruption to indicate detection of the document trailing edge at the fixed location. Various techniques may be utilized for sensing the airflow disruption including detecting air pressure variations, accelerations, and/or deflections that result from the disruption and airflow.
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