Patent ID: 7264237
Filing Date: 2007-09-04
Classification: B65H

Abstract:
1. A sheet stacking and aligning apparatus comprising: a stacker on which sheets or sheet bundles are stacked; a conveyor which conveys a sheet or a sheet bundle; and a sheet rear end aligning unit which has a press portion movable an aligning wall which rocks between an aligning position to align a rear end of the sheet or a rear end of the sheet bundle in a conveying direction by pressing the rear end of the sheet or the rear end of the sheet bundle and a retracted position inclined upstream positioned from the aligning position in the conveying direction, wherein after said conveyor conveys the sheet or the sheet bundle until the rear end of the sheet or the rear end of the sheet bundle reaches an upper end of the press portion aligning wall in the aligning position, the press portion moves aligning wall moves with a rocking motion to the retracted position, thereby the aligning wall receives the rear end of the sheet or the rear end of the sheet bundle conveyed by the conveyor, and the sheet or the sheet bundle is conveyed onto said stacker by moving the press portion rocking of the aligning wall to the aligning position again, the aligning wall thereby aligning the sheet or the sheet bundle.