Thermal Printer Image Feedback for Adaptive Thermal History Control
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Solution Overview
Problem
Existing thermal printers face challenges in performing appropriate thermal control due to variations in usage conditions, particularly influenced by paper type and environmental factors, leading to potential improper thermal control when predetermined thermal history tables are not suitable.
Innovation Solution
An image processing apparatus and method that includes a reading unit, detection unit, and processing unit to read, detect, and generate a customized thermal history table based on actual usage conditions, optimizing thermal control in thermal printers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a predetermined thermal history table is used for thermal control, then the thermal control process is simple and fast, but the thermal control accuracy deteriorates when usage conditions vary (e.g., different paper types)
Solution Approach 1:
The patent implements dynamic thermal history tables that can be automatically adjusted based on detected print quality and usage conditions. Instead of using a fixed predetermined table, the system dynamically modifies thermal history parameters to adapt to different paper types and environmental conditions, thereby maintaining both fast processing and high accuracy
Solution Approach 2:
The patent introduces a feedback mechanism where the print quality detection unit evaluates actual print results and feeds this information back to adjust the thermal history table. This closed-loop control allows the system to learn from actual performance and automatically optimize thermal control parameters for different usage conditions
2Manufacturing precision
If a customized thermal history table is generated based on actual usage conditions, then the thermal control accuracy is improved, but the system complexity increases
Solution Approach 1:
The patent enables the thermal printer system to automatically generate and adjust its own thermal history table without requiring external intervention or complex external systems. The print quality detection and thermal history adjustment are performed within the printer itself, allowing the system to serve itself and adapt to conditions autonomously
Solution Approach 2:
The patent combines multiple functions (printing, quality detection, thermal history adjustment) into an integrated system. By merging the thermal control unit with the quality detection and adjustment capabilities, the patent reduces overall system complexity while achieving accurate adaptive thermal control
3Manufacturing precision
If thermal control is adjusted for different paper types and conditions, then the print quality is improved, but the processing time increases
Solution Approach 1:
The patent performs preliminary adjustments to the thermal history table based on pre-detection of usage conditions (such as paper type identification). By preparing the appropriate thermal parameters in advance before actual printing begins, the system avoids time-consuming adjustments during the printing process itself
Solution Approach 2:
The patent efficiently changes thermal control parameters by selectively adjusting only the specific thermal history values that are relevant to the detected paper type and conditions, rather than reprocessing the entire thermal history table. This selective parameter modification reduces processing time while maintaining print quality
Data Source
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AI summary
According to one embodiment, an image processing apparatus includes a reading unit, a detection unit, a determination unit, and a processing unit. The reading unit reads an image printed based on predetermined test image data by a thermal printer that performs thermal control according to a thermal history table. The detection unit detects a difference between the image read by the reading unit and a test image represented by the test image data. The determination unit determines a thermal history table for compensating for the difference detected by the detection unit. The processing unit performs a predetermined process for setting the thermal history table determined by the determination unit in the thermal printer.