| 摘要 |
<p>In an automatic sheet-feeding device having utility in a copying machine, there are provided a cutter for cutting a sheet from a web (e.g. a strip of a recording medium) in accordance with the size of another sheet (e.g. an original sheet to be copied), a switch for detecting the trailing end of a moving original sheet, and a plurality of signal switches adapted to be actuated in succession by a signal-transmitting element incident to advance of the original sheet along a defined path past the detecting switch. The positions of the signal switches represent progressively increasing predetermined sheet lengths. Actuation of the detecting switch renders the signal switches effective to actuate the cutter, so that the first signal switch to be actuated by the transmitting element after the trailing end of the original sheet passes the detecting switch produces a signal that actuates the cutter.</p> |
