Thermal Transfer Printer Ribbon Tension Control
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Solution Overview
Problem
Existing thermal transfer printers require manual adjustment of motor voltages to apply appropriate tension to ink ribbons of different types and widths, leading to potential wrinkles and decreased printing quality.
Innovation Solution
A thermal transfer printer with a control section that automatically adjusts the tension of the ink ribbon by determining the appropriate winding and feeding voltages based on the type and width of the ink ribbon, using sensors to detect ribbon and paper widths and storing correction values in a voltage setting table.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual adjustment of motor voltages is performed according to ink ribbon type, then appropriate tension can be applied to prevent wrinkles, but operation complexity and time consumption increase
Solution Approach 1:
The system automatically detects ink ribbon type through sensors and autonomously adjusts motor voltages without manual intervention. The control unit retrieves pre-stored voltage settings based on detected ribbon characteristics, enabling the system to self-configure and eliminate the need for user manual adjustment while maintaining optimal printing quality
Solution Approach 2:
Appropriate motor voltages for different ink ribbon types are pre-calculated and stored in the control unit before actual printing operations. When a new ribbon is installed, the system instantly retrieves and applies the pre-optimized voltage settings, eliminating the need for manual adjustment and ensuring immediate optimal performance
2Manufacturing precision
If manual adjustment of motor voltages is performed according to ink ribbon width, then appropriate tension can be applied to prevent wrinkles, but operation complexity and time consumption increase
Solution Approach 1:
The system automatically detects ink ribbon width through sensors and autonomously adjusts motor voltages without manual intervention. The control unit retrieves pre-stored voltage settings based on detected ribbon characteristics, enabling the system to self-configure and eliminate the need for user manual adjustment while maintaining optimal printing quality
Solution Approach 2:
Appropriate motor voltages for different ink ribbon widths are pre-calculated and stored in the control unit before actual printing operations. When a new ribbon is installed, the system instantly retrieves and applies the pre-optimized voltage settings, eliminating the need for manual adjustment and ensuring immediate optimal performance
3Ease of operation
If fixed motor voltages are used for all ink ribbon types, then device operation is simplified, but wrinkles occur and printing quality decreases
Solution Approach 1:
The system dynamically adjusts motor voltages based on detected ink ribbon characteristics rather than using fixed values. The control unit modifies voltage parameters in real-time according to the specific ribbon type and width detected by sensors, enabling the system to adapt to varying conditions while maintaining both simplicity and optimal printing quality
Solution Approach 2:
The system changes motor voltage parameters according to detected ink ribbon characteristics. The control unit retrieves and applies different voltage settings based on ribbon type and width, transforming the fixed parameter approach into a variable parameter system that automatically adapts to different printing conditions
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
Ensures consistent high-quality printing by maintaining appropriate tension on the ink ribbon, preventing wrinkles and improving printing performance across various ribbon types and paper widths.
Implementation Method 1
a thermal head and a platen roller opposite to each other across a paper conveyance path and arranges an ink ribbon between paper conveyed on the paper conveyance path and the thermal head to carry out thermal transfer printing
Data Source
AI summary
In accordance with one embodiment, a thermal transfer printer comprises a ribbon feeding roller configured to feed an ink ribbon including an ink layer on a base film; a ribbon winding roller configured to wind the ink ribbon fed from the ribbon feeding roller; a print head configured to heat the ink ribbon from a surface provided with no ink layer to selectively transfer the ink layer to paper; and a control section configured to control to apply an appropriate tension to the ink ribbon between the ribbon feeding roller and the ribbon winding roller according to the type of the ink ribbon.