Sheet processing apparatus and image forming apparatus

摘要

A sheet processing apparatus includes a projection forming unit configured to form a projection on a sheet. The projection is formed in the vicinity of a binding portion of a sheet bundle. When a succeeding sheet bundle is discharged on the sheet bundle in which the projection has been formed on a top surface thereof, the succeeding sheet bundle is stacked by moving on the already stacked sheet bundle without being caught by the binding portion of the already stacked sheet bundle as an end of the succeeding sheet bundle is guided by the projection.

主权项

1. A sheet processing apparatus, comprising:
a first stacking portion on which sheets to be processed are sequentially stacked; a binding unit configured to implement a binding process to a sheet bundle composed of a plurality of sheets stacked on the first stacking portion; a sheet bundle moving portion configured to discharge the sheet bundle to which a binding process has been implemented by the binding unit out of the first stacking portion; a second stacking portion configured to stack the sheet bundle discharged out of the first stacking portion by the sheet bundle moving portion; a restricting member configured to abut against an end portion in a moving direction of the sheet bundle discharged and moving on the second stacking portion to align a position in the moving direction of the sheet bundle; and a projection forming unit configured to form a guide projection on a top surface of the sheet bundle such that the guide projection guides an end portion in the moving direction of a succeeding sheet bundle moving toward the restricting member above a binding portion of the sheet bundle on the second stacking portion.