Diagnostic Plot for Printing System Alignment
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Solution Overview
Problem
Variations between print elements in wide-array printing systems degrade image quality, leading to issues with alignment, color calibration, and uniformity, which existing technologies struggle to address effectively.
Innovation Solution
The implementation of a diagnostic plotting system that generates visual patterns to evaluate the alignment and color uniformity of multiple printhead dies, using electronic controllers to communicate with printhead assemblies and supply assemblies, and service stations to maintain printhead functionality, allowing for corrective actions based on system state evaluations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple printhead dies are used in wide-array printing systems, then printing coverage area is increased, but variations between print elements degrade image quality
Solution Approach 1:
The printing system is divided into multiple printhead dies (first printhead die, second printhead die, etc.) that can be independently evaluated. Each printhead die is treated as a separate segment with its own diagnostic assessment, allowing for localized quality control while maintaining overall wide-array coverage.
Solution Approach 2:
The system implements feedback through diagnostic plots that visually represent the state of each printhead die. These plots provide information about alignment, color calibration, and uniformity, enabling operators to identify and correct issues in specific printhead segments to maintain overall image quality.
2Measurement precision
If diagnostic plotting system is implemented, then system state evaluation capability is improved, but device complexity increases
Solution Approach 1:
Diagnostic plots serve as an intermediary tool that translates complex printhead die states into visual representations. These plots act as a mediator between the physical printing system and the evaluation process, providing intuitive visual feedback about alignment, color calibration, and uniformity without requiring complex direct measurement apparatus.
Solution Approach 2:
The system creates visual copies (diagnostic plots) of the actual printhead die states. These plots are graphical representations that replicate the essential characteristics of each printhead's performance, allowing for easy visual assessment and comparison without directly manipulating the physical printheads.
Data Source
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AI summary
A method of generating a diagnostic plot for a printing system includes printing a first half of a diagnostic pattern representative of a first state of the printing system, and printing a second half of the diagnostic pattern representative of a second state of the printing system. Variation of the diagnostic pattern from an adjacent diagnostic pattern indicates the printing system is out of specification.