Rotating Liquid Discharger Control for Stable Inkjet Discharge
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Solution Overview
Problem
Existing inkjet recording devices face challenges in maintaining stable discharge performance, particularly when large discharge amounts lead to discharge omission and reduced image quality due to variations in circulation pressure and posture of the liquid discharge head.
Innovation Solution
A recording device with a liquid discharger that rotates around a predetermined axis, controlled by a controller to maintain a positive pressure side for discharging liquid droplets, ensuring consistent discharge by adjusting the position and posture of the liquid discharger.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the liquid discharger discharges large amounts of liquid, then the productivity is improved, but the discharge omission occurs and image quality deteriorates due to circulation pressure variations
Solution Approach 1:
The liquid discharger is designed to be rotatable around a predetermined rotation axis, allowing dynamic adjustment of its posture. The controller dynamically changes the position and posture of the liquid discharger during reciprocating motion to maintain optimal discharge conditions, enabling stable liquid droplet discharge even at large discharge amounts
Solution Approach 2:
The system changes physical parameters including the position and orientation angles of the liquid discharger during operation. By adjusting these parameters based on the reciprocating position, the system maintains stable circulation pressure and prevents discharge omission, allowing high productivity without sacrificing reliability
2Productivity
If the liquid discharger reciprocates along the printing direction, then the productivity is improved, but the discharge performance becomes unstable due to posture variations
Solution Approach 1:
The liquid discharger maintains dynamic control of its position and posture during reciprocating motion. The controller adjusts orientation angles and position based on the reciprocating phase, ensuring that printing always starts from the positive pressure side of liquid circulation, thereby maintaining discharge precision at high printing speeds
Solution Approach 2:
The system implements control based on the reciprocating position of the liquid discharger. The controller monitors the position and adjusts the posture and orientation accordingly, creating a feedback mechanism that ensures stable discharge performance throughout the reciprocating cycle, maintaining manufacturing precision while enabling high productivity
Data Source
AI summary
A recording device includes a liquid discharger rotatable around a predetermined rotation axis and configured to discharge liquid while circulating the liquid internally and a controller configured to control the liquid discharger to discharge a liquid droplet while reciprocating along a printing direction. The controller controls a position and a posture of the liquid discharger, and thus printing is started from a positive pressure side of the liquid circulating inside the liquid discharger.