Image Forming System Spine Cover Width Determination
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Solution Overview
Problem
Existing image forming systems struggle to accurately determine the spine cover width and position the front and back cover images on a cover sheet when binding a stack of sheets, due to variations in sheet thickness and curling, leading to inaccuracies in book formation.
Innovation Solution
An image forming system that includes a measurement section to determine the spine cover width based on the thickness of the stack of sheets, an input section for user-defined spine cover width, and an image forming section that forms the front and back cover images with a spacing equal to the determined or input spine cover width, allowing for precise positioning and alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the spine cover width is calculated based on sheet thickness data and toner amount data, then the binding process can be automated, but the determination accuracy of spine cover width deteriorates due to variations in sheet thickness and curling
Solution Approach 1:
The patent applies preliminary action by measuring the actual thickness of the accumulated sheet stack before determining the spine cover width. This pre-measurement step captures the real physical state of the sheets including variations in thickness and curling, allowing the spine cover width to be determined based on actual measurements rather than calculated estimates, thereby resolving the accuracy issue while maintaining automation.
2Device complexity
If the spine cover width is determined without direct measurement, then the device complexity is reduced, but the positioning accuracy of cover images deteriorates
Solution Approach 1:
The patent replaces complex mechanical measurement systems with a simple thickness measurement approach. Instead of using complex devices to measure spine cover width directly, the system uses a straightforward thickness measurement of the sheet stack and translates this into the spine cover width parameter, achieving high positioning accuracy with minimal device complexity.
3Ease of operation
If a fixed spine cover width is used for all books, then the ease of operation is improved, but the adaptability to different sheet stacks deteriorates
Solution Approach 1:
The patent applies dynamics by making the spine cover width a variable parameter that automatically adapts to each sheet stack. The system measures the thickness of each stack and dynamically adjusts the spine cover width accordingly, allowing the binding process to adapt to different numbers and types of sheets without requiring manual intervention or complex setup procedures.
Data Source
AI summary
An image forming system including a binding system section that generates a stack of sheets by accumulating a plurality of sheets and that binds the sheets by wrapping the stack of sheets with a cover sheet in the shape of a horizontal U, the image forming system having: a measurement section to measure the thickness of the stack of sheets; a spine cover width determining section to determine a spine cover width in the cover sheet based on the thickness of the stack of sheets measured by the measurement section; and an image forming section to form on the cover sheet a front cover image and a back cover image separating them by a spacing equal to the spine cover width.