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BOTTOM STACKER Disclosure Number: IPCOM000024952D
Original Publication Date: 1983-Feb-28
Included in the Prior Art Database: 2004-Apr-04

Publishing Venue

Xerox Disclosure Journal


In a copying sequence where page 1 of a set is fed first and face up toward a collection tray, one way of preserving set order is to turn the sheets over and then collect them. However, this presents a problem if one wishes to staple the collected set because the mechanism to do the stapling will be buried under the turn that inverts the sheets into the collection tray. A bottom stacker is proposed €or avoiding this problem. In this stacker, an entry roll set A is used to ailn the sheet at a small angle to an enclosed collection plane. The rolls corrugate the sheet and the angle is small enough to project the sheet inward a maximum distance without stubbing on the preceding sheet or losing beam strength. Means for incorporating sheets into the stacker include: (1) a movable baffle top guide cover, (2) a bottom guide plate, (3) a foam wheel C to augment transport to a registration stop 3a, and (4) air floatation in the bottom guide plate for large stacks. The trail edge of each entering sheet is lifted to its final position by the foam wheels B incorporated with the input rolls, thus providing space for succeeding sheets in the stream.