| 摘要 |
An embodiment of the present invention comprises a means for holding the stack in a tilted position, the means comprising a tilted base; a sliding retainer positioned to support a side of the stack that is tilted toward the sliding retainer by the means for holding the stack in a tilted position; a first input area positioned above retainer element; a second input area positioned below the retainer element and above the means for holding the stack in a tilted position; a second input area positioned below the retainer element and above the means for holding the stack in a tilted position; and a translating carriage means attached to the means for holding the stack in a tilted position, the translating carriage means movable in an about vertical direction in response to a control signal indicating the direction of about vertical movement; whereby the apparatus is configured to selectably add mailpieces to the top of the vertical stack via the first input area or the bottom of the vertical stack via the second input area.
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