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The detection of an out-of-paper condition causes the paper supply tray to be automatically lowered, in preparation for the resupplying of paper by the operator.
English (United States)
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Paper Table Control
The detection of an out-of-paper condition causes the paper supply tray to be
automatically lowered, in preparation for the resupplying of paper by the
Xerographic copiers which use cut-sheet plain paper have a paper supply
tray which holds a stack of as many as 2,500 sheets of paper. As copies are
made, the tray is gradually moved upward by an elevator motor, to maintain the
top of the stack at the location of a single-sheet paper feeder. When from 1 to
100 sheets remain in the tray, an "add paper" message blinks. Since paper
cannot be added with the tray in its upper position, the operator is provided with a
manual switch which operates the elevator motor, lowering the tray, to allow
paper to be resupplied to the stack.
When the stack of paper is exhausted, a detector senses that paper no
longer resides on the tray. The copier then produces a constant "add paper"
message to the operator. The detector also controls the elevator motor, causing
this motor to lower the tray. The operator may now arrive at the copier, holding a
replacement stack of paper, since the tray is waiting in a position to receive the