| 摘要 |
Apparatus is disclosed for transporting and cutting film in a computer output microfilmer which includes mechanisms for transporting and cutting the film respectively, and circuitry responsive to successive sequences of pulses for controlling such mechanisms. The transport mechanism includes a pair of stepping motors having phase windings responsive to current pulses which drive the film in mutually perpendicular directions respectively. Motor control circuits responsive to the pulses are operative to switch current through these phase windings so that successive columns, each containing a plurality of frames in which images may be recorded, are disposed successively at a film gate. The shaft of the motor which transports the film in the columnar direction has an optical sensor which produces output signals corresponding to the location of the film at a reference position. These output signals are applied to the source which provides the control pulses and may be used to provide synchronism between the control pulses and the position of the film. The cutter is triggered to operate by control pulses which cause a capacitor to be discharged through a cutter operating solenoid. A timing circuit responsive to the voltage across the capacitor inhibits the recharging of the capacitor to avoid unwanted cutter energization. The transport mechanism then moves the exposed and cut film to a processor.
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