Paper feeding apparatus
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United States of America Patent
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-
Jun 5, 1990
Grant Date -
N/A
app pub date -
Feb 10, 1989
filing date -
Feb 18, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A paper feeding apparatus is provided wherein a paper supply shelf with a stack of paper sheets, from which the uppermost paper sheet of the stack is picked up, is guided for vertical movement and urged upwardly by the resilient force of a spring, and the upward movement of the paper supply shelf is limited by the engagement of the uppermost sheet of the stack with a stopper. The shelf is intermittently pushed down for a predetermined constant stroke by a click and ratchet arrangement. The picking up operation of the uppermost paper sheet of the stack is interlocked with the intermittently pushing down operation of the paper supply shelf, so that when the uppermost paper sheet of the stack is picked up, the paper supply shelf is synchronously lowered for a constant stroke.
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