Sheet Processing Device Dual Binding Mechanism
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Solution Overview
Problem
Existing sheet processing devices cannot simultaneously perform saddle stitching using metallic staples for high-speed binding and staple-less binding methods, leading to increased size and complexity, and restrict the ability to open saddle-stitched booklets at the folding center, affecting print range and user experience.
Innovation Solution
A sheet processing device with a stacker section, stopper, first binding section for metallic staples, folding section, and second binding section for paper-made staples, allowing selective binding methods and compact design, enabling both metallic staple and staple-less binding, and folding at the center of the paper sheet bundle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a sheet processing device is provided with both a binding mechanism for metallic staples and a binding mechanism for staple-less binding, then both high-speed binding and environmentally friendly binding can be performed, but the device size and complexity increase
Solution Approach 1:
The patent combines both the metallic staple binding mechanism and the staple-less binding mechanism (using crimping teeth) into a single sheet processing device. The binding mechanism includes both upper and lower crimping teeth that can perform staple-less binding, while also accommodating metallic staples for high-speed binding operations, allowing both binding methods to coexist in one integrated device
Solution Approach 2:
The binding mechanism is designed with dual functionality: it can perform both metallic staple binding and staple-less binding using crimping teeth. The upper and lower crimping teeth are configured to work together for staple-less binding, while the same mechanism can accommodate metallic staples when needed, making the device versatile for different binding requirements
2Ease of operation
If the binding position is set at the center of the paper sheet bundle, then booklet opening is facilitated and print range is improved, but the folding mechanism becomes more complex
Solution Approach 1:
The device performs binding at the center of the paper sheet bundle before folding. The binding mechanism (both metallic staple and crimping teeth) is positioned to bind the bundle at its center, and then the folding mechanism folds the bound bundle. This preliminary binding action at the center facilitates easier booklet opening while the folding mechanism is designed to accommodate this sequence
3Productivity
If metallic staples are used for binding, then high-speed binding is achieved, but recyclability and safety are reduced
Solution Approach 1:
The patent promotes the use of paper-made staples and staple-less binding methods as alternatives to metallic staples. The crimping teeth mechanism enables binding without metallic staples, using instead paper-based or biodegradable binding materials that improve recyclability and safety while maintaining binding functionality
Solution Approach 2:
The binding mechanism can switch between different binding methods including metallic staples for high-speed binding and staple-less binding using crimping teeth for environmentally friendly binding. The upper and lower crimping teeth are configured to cause local deformation in the thickness direction of the paper sheet bundle, enabling effective binding without metallic staples
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 selective high-speed saddle stitching with metallic staples and environmentally friendly staple-less binding, reducing device size and improving user experience by allowing binding at the center, facilitating easier booklet opening and reduced material usage.
Implementation Method 1
a folding blade and a folding roller apply folding to a paper sheet bundle stacked on a stacker
Implementation Method 2
upper and lower concavo-convex teeth crimping teeth are meshed with each other to cause local deformation in the thickness direction of the paper sheet bundle to make the paper sheets to be engaged with each other
Implementation Method 3
The cutter mechanism makes a cut in the paper sheet bundle for deformation of the cut part so as to bind the paper sheet bundle
Data Source
AI summary
A sheet processing device performs saddle stitching binding a bundle of stacked paper sheets, and includes a stacker section temporarily stacking conveyed paper sheets substantially vertically; a stopper regulating the paper sheets stacked in the stacker section; a first binding section provided in the stacker and saddle-stitching a paper sheet bundle regulated by the stopper at a binding position around a center of the paper sheet bundle in a sheet conveying direction; a folding section folding in half the paper sheet bundle regulated by the stopper; and a conveying section conveying the paper sheet bundle that has been folded in half by the folding section with a back side of the folded paper sheet bundle as a leading end in the conveying direction. The conveying section includes a second binding section binding the folded paper sheet bundle at the back side thereof.