Tray-Triggered Static Eliminator for Droplet Ejection Accuracy
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Solution Overview
Problem
Static electricity accumulated in the tray of droplet ejection devices of the tray transport type can cause droplets to deviate from their target, leading to deterioration in printing quality and ejection accuracy.
Innovation Solution
A static eliminator system that includes a movable part linked with the tray's movement, an ion generator positioned on the movement path, and a switch that controls ion generation based on the tray's position, allowing efficient ionization only when the tray is in the correct position for static elimination, with an optional planar fan for enhanced ion dispersal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a static eliminator with continuous ion generation is installed in a tray transport type droplet ejection device, then static electricity can be eliminated, but energy is wasted by generating ions when the tray is not in position
Solution Approach 1:
The ion generator operates periodically rather than continuously, activating only when the tray is in the correct position under the ion generator. This is achieved through a sensor that detects tray presence and controls the ion generator's operation accordingly, eliminating energy waste while maintaining static elimination effectiveness.
Solution Approach 2:
A sensor detects the tray's position and provides feedback to control the ion generator's operation. When the tray is detected in the correct position, the ion generator is activated; when the tray is absent or in incorrect position, the ion generator remains inactive, optimizing energy consumption based on real-time tray position information.
2Reliability
If the ion generator is fixed inside the device body, then static elimination can be provided, but the device structure becomes complex and modification of existing devices is required
Solution Approach 1:
The static elimination function is segmented from the main device body into a separate, attachable module. This module includes the ion generator and can be externally attached to existing droplet ejection devices without modifying the internal structure, simplifying the overall device architecture and enabling easy installation and removal.
Solution Approach 2:
A sensor acts as an intermediary between the tray and the ion generator, detecting tray presence and controlling ion generation timing. This intermediary component enables automatic control without complex wiring or integration into the device's main control system.
3Reliability
If ions are generated continuously to ensure static elimination, then static electricity is eliminated, but unnecessary ion generation occurs when tray is not positioned
Solution Approach 1:
The ion generator operates periodically based on tray presence detection rather than continuously. The sensor detects when the tray is positioned under the ion generator and activates ion generation only during this period, eliminating unnecessary energy consumption while ensuring consistent static elimination when needed.
Solution Approach 2:
The system automatically detects tray presence and controls ion generation without requiring external control signals. The sensor and ion generator work together in a self-service manner, activating ion generation only when the tray is in position and deactivating when absent, optimizing energy efficiency autonomously.
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
This solution effectively eliminates static electricity from the tray without unnecessary ion generation, improving printing quality and ejection accuracy by synchronizing ion generation with the tray's movement and position, and can be externally attached to existing devices without modifications.
Implementation Method 1
an ion generator disposed on a movement path of the tray and configured to generate ions according to the movement of the movable part
Data Source
AI summary
Provided is a static eliminator that efficiently eliminates static electricity from a tray of a droplet ejection device of a tray transport type. A static eliminator 20 includes a movable part 22 which is pushed by a tray 12 due to movement of the tray 12 and moves, and an ion generator 24 disposed on a movement path of the tray 12 and configured to generate ions according to the movement of the movable part 22.