Resilient Joint Seal Beam Portion for Liquid Discharge Head
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing liquid discharge heads, such as inkjet recording heads, face issues with ink residue remaining in supply channels after inspection, leading to impaired performance and potential ink leakage due to deformation of the joint seal member during washing and drying, which affects hermeticity and productivity.
Innovation Solution
Incorporating a beam portion within the resilient joint seal member to couple the walls defining the through hole, which restrains deformation and maintains sealing properties, even under pressure, by providing structural support and adhesiveness between the holder and discharge units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If compressed hot air is fed into the supply channel at high pressure for drying, then drying efficiency is improved, but the joint seal member deforms and hermeticity is compromised
Solution Approach 1:
The joint seal member is segmented into multiple functional regions: a sealing portion with lip portions for hermetic sealing, and a beam portion for structural support. This segmentation allows the sealing portion to maintain contact and hermeticity while the beam portion resists deformation under compressed air pressure during drying.
Solution Approach 2:
The joint seal member is formed of resilient material that combines sealing functionality with deformation resistance. The material properties are selected to provide both flexibility for maintaining contact under assembly pressure and rigidity to resist deformation when exposed to compressed air during the drying process.
2Reliability
If the joint seal member is pressed firmly between the holder unit and discharge unit, then hermeticity is improved, but the seal member deforms permanently under washing and drying pressure
Solution Approach 1:
The joint seal member is divided into a sealing portion and a beam portion. The sealing portion maintains contact for hermeticity, while the beam portion provides structural support to prevent permanent deformation when exposed to washing and drying pressures.
Solution Approach 2:
The beam portion is designed beforehand to provide structural support and prevent deformation. This preemptive structural reinforcement ensures that when washing and drying pressures are applied, the seal member maintains both its sealing contact and original shape without permanent deformation.
3Productivity
If the through hole in the joint seal member is enlarged to facilitate washing and drying, then cleaning efficiency is improved, but the seal member becomes more susceptible to deformation
Solution Approach 1:
The joint seal member is segmented into a sealing portion containing the through hole for washing access, and a beam portion providing structural support. This allows the through hole to be sufficiently large for efficient washing and drying while the beam portion prevents the seal member from deforming under the applied pressure.
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 ensures reliable hermeticity and prevents ink leakage, maintaining the discharge head's performance and productivity by securely sealing the supply channel during washing and drying processes.
Implementation Method 1
a resilient member (100) having a through hole (101) for connecting the first supply channel (23) and the second supply channel (11) formed therethrough and provided between the liquid discharge member (20) and the liquid supply member (10) in contact with the liquid discharge member (20) and the liquid supply member (10)
Data Source
AI summary
A liquid discharge head including:a liquid discharge member provided with a first supply channel and configured to discharge liquid;a liquid supply member provided with a second supply channel for supplying the liquid to the first supply channel; anda resilient member having a through hole for connecting the first supply channel and the second supply channel and provided between the liquid discharge member and the liquid supply member in contact with the liquid discharge member and the liquid supply member,wherein the resilient member includes a beam portion configured to couple walls that define the through hole.