Binding Apparatus Projections for Sheet Stack Pressure
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Solution Overview
Problem
Existing binding processing technologies face challenges in efficiently binding multiple types of sheet stacks with varying numbers of sheets using a single pressure-applying member pair, often requiring complex switching of components and additional pairs for different sheet counts.
Innovation Solution
A binding processing apparatus featuring a pressure-applying member pair with projections of specific pitch and height, and an advancing-and-retracting mechanism that applies pressure to sheet stacks without staples, allowing for efficient binding of sheets by switching between two pressure-applying member pairs based on sheet count, ensuring consistent binding strength across different sheet stacks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple pressure-applying member pairs are used to bind different sheet stack sizes, then binding reliability is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple pressure-applying members with different projection configurations into a single integrated pressure-applying member pair. The member includes multiple sets of projections with different pitches and heights, allowing it to handle various sheet stack sizes without requiring separate pressure-applying members for each size category.
Solution Approach 2:
The pressure-applying member is designed with multi-functionality to handle different sheet stack sizes (e.g., small, medium, large) using a single component. By incorporating multiple projection patterns that can be selectively engaged, the member serves universal binding purposes across various document sizes, eliminating the need for multiple specialized members.
2Strength
If pressure-applying members with different configurations are used for different sheet counts, then binding strength is improved, but the number of components increases
Solution Approach 1:
Multiple projection configurations with different pitches and heights are merged into a single pressure-applying member structure. This integration reduces the total number of components while maintaining the ability to provide appropriate binding strength for different sheet counts through selective engagement of different projection sets.
Solution Approach 2:
The pressure-applying member is segmented into multiple projection groups, each optimized for specific sheet count ranges. These segmented projections can be independently engaged or disengaged based on the sheet stack size, allowing the single component to deliver customized binding strength without requiring multiple separate members.
3Device complexity
If a single pressure-applying member pair is used for all sheet stacks, then device complexity is reduced, but binding consistency deteriorates
Solution Approach 1:
The pressure-applying member incorporates local quality variations through multiple projection sets with different pitches and heights distributed across its surface. Each local region has projections optimized for specific sheet thicknesses, ensuring consistent binding quality across various sheet stack sizes while maintaining a simple single-member structure.
Solution Approach 2:
The pressure-applying member includes movable or selectively engageable projection sets that can be dynamically adjusted based on sheet stack characteristics. This dynamic capability allows the single member to adapt its pressure distribution to maintain consistent binding quality across different sheet counts without increasing overall device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables simplified and efficient binding of sheet stacks with varying numbers of sheets using a single pressure-applying member pair, reducing component complexity and ensuring strong binding without unbinding, as demonstrated by experimental results within specified pitch, height, and load ranges.
Implementation Method 1
a pressure-applying member pair that has multiple projections arranged side-by-side and applies pressure to a sheet stack by pressing the projections against the sheet stack
Data Source
AI summary
A binding processing apparatus includes: a pressure-applying member pair that has multiple projections arranged side-by-side and applies pressure to a sheet stack by pressing the projections against the sheet stack; and an advancing-and-retracting part that causes at least one of the pressure-applying members in the pressure-applying member pair to move toward or away from the other pressure-applying member. A pitch of the projections in each pressure-applying member is from 1.2 mm to 1.5 mm, and a height of the projections is from 0.55 mm to 0.75 mm, and a load per unit area applied from each pressure-applying member to the sheet stack when the pressure-applying member applies pressure to the sheet stack is from 42 N/mm2 to 94 N/mm2.