Sheet Processing Apparatus Crease Position Calculation
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Solution Overview
Problem
Existing sheet processing technologies for bookbinding require cumbersome manual calculations to determine the creasing position for folding, which is not easily adaptable to varying book sizes and types, leading to potential issues with cover peeling and content visibility.
Innovation Solution
A sheet processing apparatus that accepts an offset position from the spine edge of a bookbinding product, acquires the creasing position using the cover size, offset position, and thickness, and executes creasing processing automatically, allowing for easy designation of the folding crease position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the operator designates the crease position by manual calculation based on media length, then the crease can be applied at the correct position, but the operation becomes cumbersome and time-consuming
Solution Approach 1:
The system automatically calculates and determines the crease position based on detected book parameters (cover length, thickness, offset position) without requiring manual calculation by the operator. The creaser apparatus performs self-service by integrating the calculation function into the control unit, which automatically processes the detected parameters and outputs the precise crease position.
Solution Approach 2:
The system performs preliminary detection and measurement of book parameters (cover length, thickness, offset position) before the creasing operation. By acquiring these parameters in advance through sensors and calculation units, the system prepares the necessary data for automatic position determination, eliminating the need for manual measurement and calculation during operation.
2Ease of manufacture
If the crease position is fixed relative to the leading edge, then the creasing process is simple, but it cannot adapt to different book sizes and types
Solution Approach 1:
The system dynamically adjusts the crease position based on the actual book parameters detected for each specific book. Instead of using a fixed position, the control unit calculates the optimal crease position by considering the cover length, thickness, and offset position, allowing the system to adapt to different book sizes and types while maintaining operational simplicity.
Solution Approach 2:
The system changes the crease position parameter based on detected book characteristics. By measuring the cover length, thickness, and offset position, the system dynamically modifies the crease position parameter to suit different book specifications, enabling versatility across various book formats while keeping the process simple through automatic parameter adjustment.
3Ease of operation
If the crease is applied too close to the spine edge, then the cover is easier to open, but the crease may overlap with the first page content
Solution Approach 1:
The system uses feedback from detected book parameters (cover length, thickness, offset position) to automatically determine the optimal crease position. By incorporating the offset position parameter that specifies the distance from the spine edge, the system calculates a crease position that balances ease of opening with prevention of content overlap, eliminating the need for manual judgment and ensuring precise positioning.
Data Source
AI summary
A sheet processing apparatus operable to perform creasing processing on media, and a method of controlling the same, accept an offset position of a crease for folding of a cover of a bookbinding product which is a length from an edge of a spine of the bookbinding product, and acquire a position of the crease for folding corresponding to the cover using at least a size of the cover, the offset position, and a thickness of the bookbinding product. Based on the acquired position of the crease, creasing processing is executed on the cover.