| 摘要 |
A document is cupped at a first time to stiffen and straighten the document before the document is stacked in the interior chamber of a document stacker. The cupped document is cupped at a second time which is different from the first time to maintain the document stiff and straight as the document is being stacked in the interior chamber of the document stacker so as to reduce the chance of a stacking defect from occurring when a succeeding document is subsequently stacked on top of the document. A trailing edge of the document is engaged to urge the trailing edge of the document in a direction away from direction of movement of the document into the interior chamber of the document stacker so as to prevent a succeeding document which is to be subsequently stack on top of the document from stacking out of sequence relative to the document. The document is frictionally engaged as the document is being stacked in the interior chamber of the document stacker to prevent the document from moving too far into the interior chamber so as to allow the trailing edge of the document to be engaged and urged in the direction away from direction of movement of the document into the interior chamber of the document stacker.
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