| 摘要 |
A passive paper stacker is disclosed for stacking large quantities of paper in a correctly collated order without the need for an externally powered motor. The stacker does not require any outside power source beyond the force of gravity acting on the paper itself. The paper enters the stacker with printed side facing upwards, the paper is pulled by the force of gravity acting on it down a slide ramp and into a radiused ramp oriented to flip the paper such that it is now facing with the printed face down. The paper then passes under a plurality of fingers and enters a paper tray where it is stacked on top of previously printed sheets of paper. The invention thus yields a stack with the first printed sheet at the bottom, the last printed sheet at the top, and each sheet having the printed side face down. When it is flipped over, the resultant stack is oriented in proper collated order: the first printed sheet on top, the last printed sheet on the bottom, and each sheet having printed face up.
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