| 摘要 |
In the case of a suction holder for removing the top sheet in each case from a pile of sheets, having a clock-controlled lifting sucker and a likewise clock-controlled press foot, which has for determining its position with respect to the pile of sheets a tongue which is assigned two fixed signal transmitters, arranged at a distance, the signal transmitter lying further away from the pile of sheets is assigned a timing element which, if a predetermined time during which the tongue is in the sensing range of this signal transmitter is exceeded, emits a signal to a servo motor, which adjusts the suction holder away from the pile of sheets by a predetermined displacement. <IMAGE>
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