Modular Liquid Discharge Head With Interchangeable Units for Easier Repair
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Solution Overview
Problem
Existing liquid discharge heads require new support members and reservoirs for changes in discharge element substrate arrangements, limiting applicability and necessitating complete replacement upon component failure.
Innovation Solution
A modular design with interchangeable discharge units, pressure adjustment units, and support members allowing flexible arrangement and easy repair, along with a common electric wiring substrate for power distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If discharge element substrates are integrally formed with support members and liquid reservoirs, then structural stability is improved, but adaptability and ease of repair deteriorate
Solution Approach 1:
The liquid discharge head is divided into separate functional modules: discharge element substrates, support members, and liquid reservoirs. Each module can be independently manufactured, assembled, and replaced. The discharge element substrate includes discharge ports and is supported by support members that are fluidly connected to liquid reservoirs, but these components are not integrally formed, allowing flexible reconfiguration for different applications.
Solution Approach 2:
The support member is designed as a universal component that can fluidly connect any discharge element substrate to any liquid reservoir. This universal interface allows the same support member to be used across different configurations and applications, enhancing adaptability while maintaining structural stability through standardized connections.
2Manufacturing precision
If discharge element substrates are integrally formed with support members and liquid reservoirs, then manufacturing precision is improved, but ease of manufacture and cost deteriorate
Solution Approach 1:
Each component (discharge element substrate, support member, liquid reservoir) is manufactured separately using optimized processes for each part type. This segmentation allows each component to be manufactured with high precision using appropriate techniques, then assembled with standardized interfaces, achieving overall manufacturing precision while reducing total manufacturing complexity and cost.
Solution Approach 2:
While components are manufactured separately, they are precisely aligned and connected through standardized interfaces during assembly. The support member provides precise positioning features that ensure accurate alignment between discharge element substrates and liquid reservoirs, achieving the manufacturing precision of an integrally formed component through modular assembly.
3Reliability
If integrally formed components are used, then reliability is improved, but ease of repair deteriorates
Solution Approach 1:
The modular architecture allows individual components to be replaced independently. If a discharge element substrate fails, only that substrate needs to be replaced, not the entire assembly. This segmentation maintains system reliability through easy replacement of failed components while reducing repair time and cost compared to replacing entire integrally formed assemblies.
Solution Approach 2:
Failed components such as discharge element substrates can be quickly removed and replaced with new or refurbished units. The standardized interfaces enable rapid exchange of components, allowing recovered or replacement parts to be quickly integrated back into the system, minimizing downtime and maintaining high operational reliability.
Data Source
AI summary
A liquid discharge head includes a plurality of discharge units each including a discharge element substrate configured to discharge liquid, a pressure adjustment unit configured to reserve the liquid to be discharged from the discharge element substrate and to adjust a pressure of the liquid, and a support member configured to fluid-connect the discharge element substrate and the pressure adjustment unit and to support the discharge element substrate, wherein the plurality of discharge units is arranged in a juxtaposed manner.