Liquid Ejection Head Conductive Channel Integration for Stable Grounding
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Solution Overview
Problem
Existing liquid discharge heads face instability in grounding, leading to potential electrical noise interference and reduced discharge performance.
Innovation Solution
The liquid discharge head incorporates an electrically conductive first channel member with higher conductivity, coupled with electrically continuous and more conductive positioning mechanisms, ensuring stable grounding through enhanced contact areas and fixation points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional liquid discharge head is used with standard grounding, then the structure is simple, but the grounding stability is poor leading to electrical noise interference
Solution Approach 1:
The patent changes the electrical conductivity parameter of the channel members by using a first channel member with higher electrical conductivity than the second channel member. This parameter change improves grounding stability and reduces electrical noise without requiring additional grounding components, thus resolving the contradiction between reliability and device complexity.
2Object-affected harmful factors
If the first channel member has higher electrical conductivity, then electrical noise interference is reduced, but the manufacturing complexity increases
Solution Approach 1:
The first channel member serves multiple functions: it acts as both a liquid channel and an electrically conductive grounding path. By integrating the grounding function into the channel member itself rather than adding separate grounding components, the patent reduces electrical noise interference while maintaining ease of manufacture.
3Reliability
If the electrically conductive portion has higher conductivity than the second channel member, then grounding stability is improved, but the material selection and assembly difficulty increase
Solution Approach 1:
The patent merges the electrically conductive portion with the first channel member, making them electrically continuous. This integration ensures that the grounding path is automatically established through the high-conductivity channel member structure itself, improving grounding stability while simplifying the assembly process by eliminating separate grounding connections.
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 configuration achieves stable grounding, reducing electrical noise interference and maintaining consistent discharge performance, even under external forces or noise conditions.
Implementation Method 1
The first channel member has electrical conductivity and includes a nozzle configured to discharge a liquid. The electrically conductive portion is electrically continuous to the first channel member and has higher electrical conductivity than the second channel member.
Data Source
Figure 1~2
Figure 3
Figure 4A~4B
AI summary
A liquid discharge head includes a first channel member, a second channel member, and an electrically conductive portion. The first channel member has electrical conductivity and includes a nozzle configured to discharge a liquid. The second channel member is configured to supply the liquid to the first channel member. The electrically conductive portion includes a positioning mechanism configured to determine a position of the nozzle. The electrically conductive portion is electrically continuous to the first channel member and has higher electrical conductivity than the second channel member.