Binding Unit Shift Control for Sheet Damage Prevention
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Solution Overview
Problem
Existing post-processing apparatuses for binding sheets suffer from increased size and cost due to separate binding processing sections, and manual shifting of a common binding unit is burdensome and prone to sheet damage or apparatus failure, especially when handling thick or curled sheets.
Innovation Solution
A post-processing apparatus with a controller that prevents the binding processing unit from shifting to a second position if sheets are present on the second sheet mount section, using an identification device to determine sheet presence and prohibiting the shift, thereby avoiding contact and potential damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a common binding processing unit is automatically shifted between first and second positions, then productivity and ease of operation are improved, but sheets may be damaged or apparatus failure may occur when sheets are present in the destination area
Solution Approach 1:
The patent employs a sheet detection sensor that monitors whether sheets are present in the destination area (second sheet mount section) before the binding processing unit shifts position. This feedback mechanism prevents the unit from shifting when sheets are present, avoiding sheet damage while maintaining automated operation for improved productivity.
Solution Approach 2:
The system performs preliminary detection of sheet presence in the destination area before the binding processing unit begins its position shift. This preliminary action ensures that the unit only moves when safe to do so, preventing damage to sheets that might be in the way.
2Adaptability or versatility
If separate binding processing sections are provided for automatic and manual binding, then adaptability is improved, but device complexity and cost increase
Solution Approach 1:
The patent makes a single binding processing unit capable of performing both automatic binding (at first position) and manual binding (at second position) functions. This multi-functionality provides the adaptability of having separate sections while avoiding the complexity and cost of maintaining two independent binding units.
Solution Approach 2:
The patent combines the automatic and manual binding functions into a single integrated binding processing unit that can operate in both modes. This merging reduces device complexity while maintaining the versatility needed for different binding requirements.
3Ease of operation
If the binding processing unit shifts to the second position for manual binding, then ease of operation is improved, but sheet damage or apparatus failure may occur due to contact with sheets in the shift trajectory
Solution Approach 1:
A sheet detection sensor provides real-time feedback about sheet presence in the second sheet mount section. This feedback controls the shifting operation, preventing the binding unit from moving when sheets are present in the trajectory, thus eliminating sheet damage while preserving the ease of manual binding operation.
Solution Approach 2:
The sheet detection sensor acts as an intermediary between the control system and the binding processing unit's shifting mechanism. It mediates the shifting action by providing information about sheet presence, allowing the system to make safe decisions about when to shift.
Data Source
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AI summary
A post-processing apparatus includes a first sheet mount section to place sheets in the shape of a bunch, a second sheet mount section to place sheets in the shape of a bunch, a binding processing unit disposed to be able to shift to a first position to bind sheets placed in the first sheet mount section and a second position to bind sheets placed in the second sheet mount section, and a regulation device that does not position the sheets in the shape of a bunch in an area of the binding processing unit when the binding processing unit is not positioned in the second position.