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12 February 1992
8.
ORIGINAL MISFEED DETECTION
The main system's CPU lights the original misfeed indicator if the previous
original remains on the exposure glass after manual copying and DF feed is
attempted. When the DF is lifted and the previous original is removed, DF
copying is permitted.
The registration sensor and the feed-out sensor are used for misfeed checks.
The functions of the two sensors are as follows:
8.1 ONE-SIDED ORIGINAL
Registration Sensor
ON check (540 ms)
Feed-out Sensor
Belt Drive Motor
Feed-out Motor
If the registration sensor is not actuated within 540 milliseconds after the belt
drive motor starts turning, the Original Misfeed indicator lights (ON check).
If the registration sensor does not turn off within 780 milliseconds, the CPU
determines that there has been an original misfeed (OFF check). The
Original Misfeed indicator also lights if the feed-out sensor is not actuated
within 780 milliseconds after the belt drive motor starts turning forward (ON
check), or if the feed-out sensor does not turn off within 780 milliseconds
after the feed-out sensor turns on (OFF check).
OFF check (780 ms)
17
ORIGINAL MISFEED SENSING
ON check (780 ms)
OFF check (780 ms)
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