Inkjet Pattern Inspection Trigger Timing Using Sensor-Based Control
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Solution Overview
Problem
Adjusting the timing of the imaging trigger for capturing a pattern drawn by an inkjet print apparatus is complicated and requires skilled personnel familiar with both the inkjet print apparatus and the camera, making it difficult to set the optimal timing for image inspection.
Innovation Solution
An inkjet print apparatus with an ink accommodation section, ejection section, imaging section, image inspection section, storage section, display section, detection sensor, and control section that automatically determines the optimal timing for the imaging trigger based on area information, element position, and detection sensor timing, allowing for easy timing adjustment without manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual timing adjustment of the imaging trigger is performed through test drawing and observation, then the imaging timing can be optimized, but the operation becomes complicated and requires skilled personnel
Solution Approach 1:
The control section pre-calculates and stores the optimal imaging trigger timing based on the relationship between ejection timing and camera field of view, eliminating the need for manual test drawing and observation. The timing is determined in advance through automated calculation rather than manual adjustment.
Solution Approach 2:
The system performs self-adjustment by automatically calculating the optimal imaging timing based on stored area information and ejection timing data. The control section autonomously determines the trigger timing without requiring external manual intervention or skilled operation.
2Ease of operation
If automated timing determination is implemented using area information and detection sensor data, then the ease of operation improves, but the device complexity increases
Solution Approach 1:
The control section performs multiple functions: it controls ink ejection, calculates optimal imaging timing, stores area information, and generates imaging triggers. By making the control section multi-functional, the patent avoids adding separate dedicated hardware for each function, thereby managing device complexity while achieving automated timing determination.
Solution Approach 2:
The patent uses detection sensor timing and stored area information as intermediaries to bridge the gap between ejection timing and optimal imaging timing. These intermediaries enable the control section to calculate the trigger timing without requiring direct complex coordination between multiple independent systems.
3Measurement precision
If test drawing and manual observation are used for timing adjustment, then the optimal imaging timing can be achieved, but the time consumption and productivity are reduced
Solution Approach 1:
The patent replaces the manual mechanical process of test drawing and observation with an automated computational system. The control section uses algorithms to calculate optimal timing based on stored parameters, eliminating the need for physical test drawing and manual observation processes.
Solution Approach 2:
The system pre-calculates and stores the optimal imaging timing parameters before actual operation. This preliminary calculation eliminates the need for time-consuming test drawing and manual adjustment during setup, thereby improving productivity while maintaining timing accuracy.
Data Source
AI summary
The timing adjustment of an imaging trigger is facilitated. An inkjet print apparatus includes: an imaging section that captures a drawing pattern formed on an object to be drawn with ink and generates a captured image; an inspection machine that performs image inspection of the drawing pattern using the captured image; a storage section that stores area information indicating an area in which the drawing pattern on the object to be drawn can be captured, the area information being determined on the basis of an angle of view information defining an imaging field of view of the imaging section; a detection sensor that detects arrival of the object to be drawn; and a control section that determines an issuance timing of an imaging trigger on the basis of the area information, a position of an element, and a detection timing of the detection sensor.