Substrate Drying Control via Equilibrium Temperature Feedback
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Solution Overview
Problem
Existing printing technologies face challenges in precisely determining and adjusting the degree of drying of a print image on a substrate, which affects the quality of the print and subsequent processes like film formation and coating.
Innovation Solution
A drying system comprising a dryer that supplies thermal energy and temperature sensors to detect temperature values, with a processor comparing these values to a threshold based on equilibrium temperature, allowing for precise determination and adjustment of the drying process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If thermal energy is supplied to dry the substrate, then the drying speed increases, but the temperature control precision deteriorates
Solution Approach 1:
The system uses temperature sensors to continuously monitor the substrate temperature and feeds this information back to the controller, which adjusts the thermal energy supply accordingly to maintain precise temperature control while achieving efficient drying
Solution Approach 2:
The system dynamically changes thermal parameters (temperature, heating power) based on the drying state of the substrate, transitioning from high-temperature rapid drying to controlled-temperature precision drying to resolve the contradiction between drying speed and temperature control
2Manufacturing precision
If the drying process is monitored continuously, then the drying precision improves, but the system complexity increases
Solution Approach 1:
The system replaces complex mechanical measurement devices with optical/infrared temperature sensors that can non-contactively measure substrate temperature, achieving precise drying monitoring without significantly increasing mechanical system complexity
Solution Approach 2:
The substrate itself serves as the measurement target, using its own temperature response to thermal energy as the drying indicator, eliminating the need for separate complex measurement 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 method enables efficient and precise control of the drying process, ensuring a high-quality print image by determining the degree of drying and adapting thermal energy supply, thereby improving the reliability of post-processing steps.
Implementation Method 1
supplying thermal energy to the substrate in order to dry the substrate via evaporation of fluid
Implementation Method 2
at least one temperature sensor that is configured to detect at least one temperature value in relation to a temperature of the substrate
Data Source
AI summary
A dryer comprises at least one dryer that is configured to supply thermal energy to a substrate in order to dry said substrate via evaporation of fluid. Information with regard to the degree of drying of the substrate may be precisely determined via comparison of a measurement value of the temperature of the substrate with the equilibrium temperature that results given an equilibrium of latent heat and supplied thermal energy. Alternatively or additionally, the degree of drying of the substrate may be precisely set.