| 摘要 |
A document transport for a document scanning device has an elevator for locating a stack of documents to be fed automatically into position to be scanned. The top document is removed from the stack by a feed roller. Other documents which may become entrained with the top document are returned to the stack by separation rollers. The top document is driven into the scanning device against an alignment gate and this action eliminates any skew in the position of the document. At a read or scan station beyond the gate, which is reached by the document once the alignment gate has been withdrawn, the data on the document is scanned as the document is moved by read rollers in a controlled fashion. As the document leaves the read station it is trapped between the two single opposing belts in a buffer unit, which move the document at the spped of the scanning rollers. When the end of the document leaves the read station the buffer unit changes speed and the document is accelerated to a higher eject speed by the opposing belts. Upon leaving the buffer the document enters an ejector assembly consisting of a plurality of longitudinally aligned pairs of single opposing belts leading to an accept document stacker, where the scanned documents are stored. In the event a document cannot be properly scanned by the scanning device, a reject gate moves into the eject path and diverts the document to a reject stacker via an additional pair of single opposing belts.
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