Print Gap Airflow Feedback for Accurate Drop Placement
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Solution Overview
Problem
The accuracy of print fluid placement on a printing substrate is affected by atmospheric conditions, leading to errors in drop landing due to variations in air flow, which current printing systems fail to adequately compensate for.
Innovation Solution
A printing system equipped with a sensor to detect air flow parameters, such as dynamic pressure or thermistor resistance, which adjusts the firing of the print nozzle in real-time to compensate for air flow variations, ensuring accurate drop placement regardless of ambient conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If real-time air flow measurement and nozzle firing adjustment are implemented, then drop placement accuracy is improved, but device complexity increases
Solution Approach 1:
The system employs a sensor to detect air flow conditions in the print gap and feeds this information back to the controller, which then adjusts the nozzle firing parameters in real-time. This closed-loop feedback mechanism enables the system to compensate for air flow variations and maintain accurate drop placement despite changing environmental conditions.
Solution Approach 2:
The system dynamically adjusts the nozzle firing parameters based on real-time air flow measurements. Rather than using fixed ejection settings, the controller modifies firing timing, duration, or intensity according to the detected air flow conditions, making the printing process adaptive to environmental variations.
2Productivity
If air flow compensation is implemented, then productivity is improved through reduced reprints, but device complexity increases
Solution Approach 1:
The real-time monitoring and adjustment system prevents printing errors by compensating for air flow variations during the printing process, reducing the need for reprints and improving overall productivity.
Solution Approach 2:
The system automatically detects and compensates for air flow conditions without requiring external intervention or manual adjustment, enabling self-correcting operation that maintains productivity while minimizing waste from defective prints.
3Reliability
If sensor-based air flow detection is added, then reliability of print quality is improved, but device complexity increases
Solution Approach 1:
The sensor provides continuous feedback on air flow conditions, enabling the controller to make real-time adjustments that ensure consistent print quality across varying environmental conditions.
Solution Approach 2:
The system transitions from static printing parameters to dynamic, condition-based parameter adjustment, allowing the printing process to adapt to changing air flow conditions and maintain reliable quality output.
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 minimizes aerodynamic-induced errors in drop landing, enhancing accuracy and productivity by adapting print fluid ejection to compensate for varying air flow conditions.
Implementation Method 1
A printing system equipped with a sensor to detect air flow parameters, such as dynamic pressure or thermistor resistance
Implementation Method 2
A printing system equipped with a sensor to detect air flow parameters, such as dynamic pressure or thermistor resistance
Implementation Method 3
The accuracy of print fluid placement on a printing substrate is affected by atmospheric conditions, leading to errors in drop landing due to variations in air flow
Data Source
AI summary
An example method is described in which a property is measured associated with air flowing through a print gap between a print head and a printing substrate, the print head to eject a print fluid on the printing substrate; an ejection of print fluid is adjusted from the print head based on the measured property.