| 摘要 |
In a sorting apparatus which is mechanically coupled to, but electrically independently operated from a copying machine, the sorting operation is realized. A copy delivery time interval between a front end of a first copy and a front end of a second copy is measured and stored with an addition of a tolerance time in a memory. Such a measurement is repeated for the succeeding copies. During the measurement if the time interval exceeds a predetermined basic time longer than the time interval, the sorting apparatus recognizes that the original document was substituted by new one. Then the storing way in the sorting apparatus is changed to receive copies of the new original document.
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