Coating Roller Control for Consistent Adhesive Strength
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Solution Overview
Problem
Book binding systems using electrophotographic image forming apparatuses face challenges in achieving consistent adhesive strength across different types of paper, as the adhesive strength varies with paper quality and surface smoothness, leading to insufficient or excessive bonding.
Innovation Solution
The system controls the coating frequency and rotation speed of the coating roller based on paper type, using a coating section with an adhesive tank, heater, and sensor to adjust the adhesive layer thickness and uniformity, ensuring uniform adhesive strength across various paper types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If coating frequency is increased to improve adhesive strength on coated paper, then adhesive strength is improved, but coating amount increases excessively
Solution Approach 1:
The invention changes the parameters of the coating process by adjusting both coating frequency and roller rotation speed based on paper type. For coated paper, the system increases coating frequency while maintaining appropriate roller speed to achieve sufficient adhesive strength without excessive coating material usage.
Solution Approach 2:
The coating system dynamically adjusts operating parameters (coating frequency and roller rotation speed) according to the detected paper type. This dynamic adaptation allows the system to optimize adhesive application for different paper surfaces, ensuring adequate bonding on coated paper while avoiding over-coating.
2Productivity
If coating frequency is decreased to reduce coating amount, then coating efficiency is improved, but adhesive strength becomes insufficient on coated paper
Solution Approach 1:
The system changes coating parameters dynamically based on paper type detection. For coated paper, it increases coating frequency while adjusting roller rotation speed to maintain optimal coating application, ensuring sufficient adhesive strength is achieved without sacrificing excessive productivity.
Solution Approach 2:
The coating apparatus dynamically adapts its operating parameters according to the paper type being processed. This allows the system to maintain high productivity on regular paper while ensuring adequate adhesive strength on coated paper through increased coating frequency and adjusted roller speed.
3Device complexity
If a single coating parameter is used for all paper types, then device complexity is reduced, but adhesive strength varies across different paper types
Solution Approach 1:
The invention implements parameter changes based on paper type detection. The control unit adjusts coating frequency and roller rotation speed according to whether the paper is regular or coated type, ensuring consistent adhesive strength across different paper types while maintaining relatively simple device architecture.
Solution Approach 2:
The coating control system achieves multi-functionality by being able to handle different paper types with a single apparatus. Through automatic parameter adjustment based on paper type detection, the same coating mechanism can effectively process both regular and coated paper, ensuring consistent bonding quality without requiring separate coating systems.
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
This approach ensures consistent adhesive strength across different paper types, enabling the creation of booklets with uniform bonding quality without the need for special processing devices, reducing manufacturing costs and improving book binding efficiency.
Implementation Method 1
an adhesive tank 601 for storing the adhesive AD, a coating roller 602, control members 603 and 604, a heater 605
Data Source
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AI summary
A book binding system comprising an image forming apparatus for forming images on a sheet, a book binding apparatus having a coating section for coating adhesive onto the spine of a sheet bundle and forming a booklet by coating adhesive and binding a plurality of sheets on which images have been formed at the image forming device, and a coating control section for controlling a coating amount of the adhesives of the coating section in accordance with the sheet type.