| 摘要 |
The apparatus has a driven pair of feed rolls (10, 11) and a folding roll (23) which is urged against the lower feed roll (10). The roll pair (10, 11) transports the sheet into a guide element (35, 36) for guiding and arresting the front end of the sheet. The guide element (35, 36) can be another roll pair with a reversible drive (41). After the front end of the sheet has come to a stop, the sheet is transported into the feed nip (22) between the rolls (10, 23), then folded and discharged downwardly. For increasing the operating speed without damaging the sheets, the roll pair (10, 11) is initially accelerated after the sheet is captured, and subsequently decelerated before the front end of the sheet comes to a stop.
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