Self-adjusting color calibration for print systems
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Solution Overview
Problem
Print systems face challenges in maintaining consistent color output due to changes in operational parameters such as temperatures, sheet material properties, and ink properties over time, requiring frequent calibration to ensure accurate color reproduction.
Innovation Solution
A self-adjusting calibration method and system that uses an image sensor to measure color outputs, adjusts calibration parameters automatically based on predetermined thresholds, and dynamically recalculates look-up tables to maintain color consistency without operator intervention, allowing for continuous optimization of color calibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If frequent manual calibration is performed to maintain color consistency, then color output accuracy is improved, but operational time and productivity are reduced
Solution Approach 1:
The calibration system performs self-calibration automatically without requiring manual operator intervention. The processor executes calibration routines, adjusts operational parameters, and maintains color accuracy autonomously, allowing the print system to service itself and eliminate downtime associated with manual calibration operations.
Solution Approach 2:
The system continuously monitors color output and compares it against target values, then automatically adjusts operational parameters based on the detected deviations. This closed-loop feedback mechanism ensures color consistency is maintained dynamically without requiring periodic manual intervention, thus preserving productivity while ensuring accuracy.
2Ease of operation
If automated calibration is implemented to reduce manual intervention, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The processor is designed to perform multiple functions including both normal print operations and calibration routines. The same hardware components are utilized for both printing and calibration measurements, eliminating the need for separate dedicated calibration hardware and reducing overall system complexity despite the automated functionality.
Solution Approach 2:
The calibration system merges the measurement, analysis, and adjustment functions into a single integrated process controlled by the existing processor. The operational parameter adjustments are applied directly within the print system without requiring external calibration devices, combining multiple calibration steps into one unified automated operation.
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
The system enables automated and optimized color calibration, adapting to operational changes in print systems, ensuring consistent color output and reducing the need for manual parameter adjustments, thereby improving print quality and efficiency.
Implementation Method 1
a) printing first color outputs on first sheets; and b) reading the first color outputs with the image sensor
Data Source
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AI summary
An embodiment of this disclosure involves printing color outputs on sheets, reading the color outputs and adjusting a calibration parameter.