Liquid Discharge Head Damper Plane Separation
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Solution Overview
Problem
In liquid discharge heads, pressure fluctuations between chambers lead to mutual interference, causing ink leakage and unstable discharge, which deteriorates image formation quality.
Innovation Solution
A liquid discharge head design where the damper and individual chamber are formed on different planes, with no hollow region below the damper, ensuring uniform rigidity and preventing pulsation propagation, thereby stabilizing the discharge process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a damper is disposed between the common chamber and individual chamber to prevent propagation of pressure fluctuation, then pressure fluctuation propagation is suppressed, but the structural complexity increases due to additional components and cut-out portions in plate-shaped components
Solution Approach 1:
The invention extracts the harmful hollow region from the plate-shaped component structure by positioning the damper on a different plane, thereby eliminating the need for cut-out portions while maintaining pressure fluctuation suppression functionality
Solution Approach 2:
The damper is positioned on a different plane from the plate-shaped components, changing the spatial dimension of damper placement to avoid interference with the structural integrity of the plate-shaped components
2Reliability
If the damper is disposed between the common chamber and individual chamber, then pulsation propagation is suppressed, but the rigidity uniformity of the plate-shaped components deteriorates due to cut-out portions
Solution Approach 1:
The harmful hollow region is extracted from the plate-shaped component by positioning the damper on a different plane, eliminating cut-out portions and maintaining uniform rigidity distribution
Solution Approach 2:
The damper is relocated to a different plane, separating its functional space from the structural space of the plate-shaped components, thereby preserving rigidity uniformity while maintaining pulsation suppression
3Device complexity
If pressure fluctuation is allowed to propagate between chambers, then the structure remains simple without dampers, but mutual interference occurs causing ink leakage and unstable discharge
Solution Approach 1:
The damper acts as an intermediary element positioned on a separate plane, mediating between the common chamber and individual chamber to suppress pressure fluctuation propagation while maintaining overall structural simplicity
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 design suppresses pulsation propagation, reducing vibration and ensuring stable discharging performance with minimal variation in discharge speed, resulting in high-quality ink discharge control.
Implementation Method 1
a damper is disposed between a common chamber and an individual chamber to prevent propagation of pressure fluctuation
Data Source
AI summary
A liquid discharge head includes a channel section, and a driving section. The channel section supplies a liquid to a plurality of nozzles to discharge the liquid. The driving section causes the nozzles to discharge the liquid. The channel section includes an individual chamber to supply the liquid to the nozzles and a common chamber to supply the liquid to the individual chamber. A laminated portion of each of a plurality of plate-shaped components which are constituent components of the individual chamber does not have a cut-out portion in a portion corresponding to a bonding position of a damper member disposed between the individual chamber and the common chamber.