| 摘要 |
The invention relates to a device for the reading of flat material, comprising an endless perforated belt (1), guided over two rollers (2, 3), of which one is driven. The material is brought from a feeder device (10, 11, 12) to an inlet and the belt (1) transports said material to an outlet, whereby the material is retained against the belt by a vacuum acting on the perforations (20) of the belt (1) and at least one reading device (15) is provided, for reading the markings from the material being transported on the belt (1). In conventional devices of this type only markings may be read which lie on the upper surface of the sheet. The aim of the invention is to provide an embodiment of the device with which markings may also be read which lie on the under surface of the sheet. Said aim is achieved, whereby an inlet (13 or 14) is arranged on both sides of the rollers (2 or 3), said device is adjustable relative to the feed unit (10, 11, 12) and, in the one position, the one inlet (13 or 14), is at the level of the feed unit (10, 11, 12) and, in the other position, the other inlet (14 or 13) is at the level of the feed unit (10, 11, 12). On an adjustment from the one position to the other, a reversal in the direction of rotation of the driven roller (2 or 3) occurs and the at least one reading device (15) faces that side (4 or 6) of the belt (1), the inlet (13 or 14) of which is at the level of the feed unit (10, 11, 12).
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