Patent ID: 6568669
Filing Date: 2003-05-27
Classification: B27F,B65H

Abstract:
A sheet post-processing apparatus comprising:stacking means for stacking sheets discharged sequentially from an image forming apparatus; at least one leading edge restricting member movable between a restricting position to restrict a leading edge of a sheet discharged to the stacking means in a sheet discharge direction and a retracted position to retract from the restricting position; a head unit movably disposed in a direction traversing the sheet discharge direction to provide staples into a sheet bundle; an anvil unit arranged at a side to face the head unit and movably disposed in the direction traversing the sheet discharge direction to receive and bend staples driven from the head; a feed path disposed between the head unit and the anvil unit for allowing the sheet bundle to pass therethrough; feeding means for feeding the sheet bundles from the stacking means to the feed path, said head unit and said anvil unit stitching the sheet bundles fed for a specified distance into the feed path by the feeding means; and means for moving said at least one leading edge restricting member between said restricting position and said retracted position by moving at least one of said head unit and said anvil unit in a direction traversing said sheet discharge direction.