| 摘要 |
Sheets being advanced on a driven conveyor with one sheet at least partially overlapped by another are separated in the transport path, so that only one sheet is fed at a time, by the action of a friction member such as a roller which is mounted for swinging movement relative to a line of contact with the sheets for pressing the sheets against the conveyor and is biased by a spring and/or its own weight in the direction opposite to the transport direction. The axis of swinging movement is parallel to the line of contact and so located that a plane through the swing axis and the plane of the transport path at that line, as viewed in the transport direction, forms an angle of between about 70 DEG and 90 DEG . The friction member preferably is a roller which is rotated at a relatively low speed so as to move its peripheral surface in the direction opposite to the transport direction. Sheet separations can be effected reliably over long periods of service of the apparatus, with little dependence of the effective frictional forces on the coefficient of friction between the friction member and the sheets.
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