Liquid Discharging Apparatus Resin Attachment Correction
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Solution Overview
Problem
Existing liquid discharging apparatuses face challenges in accurately specifying the attachment position of resin components within the nozzle or liquid flow path, leading to difficulties in maintaining optimal discharge characteristics.
Innovation Solution
A liquid discharging apparatus equipped with a first inspection mechanism to detect discharge abnormalities and a second inspection mechanism to analyze pressure oscillations, allowing for the specification of resin attachment positions and subsequent correction of driving pulses to maintain target discharge amounts and speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If resin ink is used to improve abrasion resistance and weather resistance, then the recording quality is improved, but resin components attach to the nozzle or liquid flow path causing discharge abnormalities
Solution Approach 1:
The system uses inspection mechanisms to detect discharge abnormalities and remaining oscillation, then feeds this information back to the control circuit which adjusts the driving pulse to correct the discharge characteristics. This closed-loop feedback system continuously monitors and corrects resin attachment effects.
Solution Approach 2:
The control circuit changes the parameters of the driving pulse (voltage, time width) based on inspection results to correct discharge abnormalities caused by resin attachment, thereby adjusting the discharge characteristics dynamically.
2Reliability
If maintenance methods are applied to address resin attachment, then discharge characteristics are improved, but the attachment position cannot be specified leading to ineffective correction
Solution Approach 1:
The liquid flow path is divided into multiple sections (nozzle inner wall, liquid flow path inner wall) and each section is inspected separately using different inspection mechanisms. This segmentation allows identification of which specific section has resin attachment.
Solution Approach 2:
The inspection mechanisms act as intermediaries between the resin attachment problem and the control system. By detecting discharge abnormalities and remaining oscillation, they provide indirect information about attachment position that the control circuit can use for correction.
3Reliability
If driving pulse correction is applied to maintain discharge characteristics, then the discharge amount and speed are stabilized, but requires complex inspection and control mechanisms
Solution Approach 1:
The system performs self-diagnosis and self-correction by using inspection mechanisms to detect its own discharge abnormalities and then automatically adjusting its driving pulse through the control circuit, eliminating the need for external intervention.
Solution Approach 2:
The system uses feedback from inspection mechanisms to automatically adjust driving pulse parameters, creating a self-regulating system that maintains discharge characteristics without complex external control.
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
Enables precise adjustment of discharge parameters to ensure consistent ink droplet size and speed, even when resin components attach, thereby maintaining optimal printing performance.
Implementation Method 1
an actuator that generates pressure oscillation in the liquid in the liquid flow path
Data Source
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AI summary
A control method of a liquid discharging apparatus includes: a discharge inspection step of inspecting discharge abnormality of a nozzle by a discharge inspection mechanism; a remaining oscillation inspection step of inspecting oscillation of the ink inside a pressure chamber by a oscillation inspection circuit when the discharge abnormality is detected; a first correction step of performing correction which corresponds to the attachment of the resin inside the pressure chamber with respect to the driving pulse when abnormality is detected in oscillation; a re-discharge inspection step of inspecting the discharge abnormality of the nozzle after the first correction step; and a second correction step of performing the correction which corresponds to the attachment of the resin inside the nozzle with respect to the driving pulse when the abnormality is not detected in the oscillation in the oscillation inspection step or when the discharge abnormality is detected in the re-discharge inspection step.