| 摘要 |
A sheet pick-up device of an automatic document feeder is used for feeding a sheet into a sheet feeding path. The sheet pick-up device includes a sheet pick-up module and a sustaining element. The sheet pick-up module includes a driving shaft and a sheet pick-up arm coupled to the driving shaft. The sheet pick-up arm is driven by the driving shaft to be rotated to either a standby position or a sheet feeding position. The sustaining element is pivotally coupled to the sheet pick-up arm. When a distal end of the sustaining element is rotated to be in contact with the sheet feeding path, the sheet pick-up arm stays in the standby position.
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