| 摘要 |
<p>Sheet counting apparatus comprises a set of rotatably mounted suction spindles (2-6) mounted for movement past a stack of sheets (26) to be counted. A vacuum (19) is connected to the spindles whereby as a suction spindle passes the stack, the vacuum is supplied to the spindle so that the topmost sheet is deflected from its initial position. A monitor (22, 23) monitors the number of deflected sheets by monitoring the degree of vacuum within the suction spindle passing the stack. The monitor increments a count on each occasion when the monitored vacuum exceeds a predetermined level threshold for a predetermined time.</p> |
