Sheet processing apparatus and image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorsNaoto Tokuma, Rikiya Takemasa, Hideki Kushida
Life of this patent
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Abstract
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.
Claims18
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.
A sheet processing apparatus, comprising:
- a first stacking portion on which sheets to be processed are sequentially stacked;
- a stapler that staples a sheet bundle composed of a plurality of sheets stacked on the first stacking portion;
- a second stacking portion, having an inclined stacking surface, to which the sheet bundle stapled by the stapler is discharged;
- an aligning wall against which an end in a moving direction of a sheet bundle moving along an inclination of the stacking surface abuts;
- a projection forming unit including a punch and a die capable of forming a projection projecting to one side from a surface of a sheet;
- and
- a control portion that drives the projection forming unit to form the projection by the punch and die at least on a sheet located at a top surface of the sheet bundle in discharging the sheet bundle to the second stacking portion at position where at least a part of the projection is located on an upstream side in the moving direction of a position stapled by the stapler.
Dependencies are inferred from the claim text.