Liquid Container Packaging Body Gas Discharge Design
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Solution Overview
Problem
Liquid containers used in inkjet printers often deform or break due to gas generated by chemical changes in the ink, especially when they lack air introduction ports or have sealing structures that prevent gas discharge.
Innovation Solution
A liquid container design with a containing chamber and packaging body where the hydrogen penetration rate of the packaging body is equal to or greater than the member partitioning the chamber, and the vapor penetration rate of the packaging body is lower, allowing efficient gas discharge and preventing deformation and breakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a sealing structure without air introduction port is used (ink pack), then the container structure is simpler, but the container is greatly deformed or damaged due to temporarily generated gas
Solution Approach 1:
The packaging body is designed with gas discharge functionality before the liquid container is sealed. The gas discharge hole is pre-formed in the packaging body, allowing generated gas to escape before it can cause deformation or damage to the sealed container, thus preventing the harmful effect in advance
Solution Approach 2:
The packaging body acts as an intermediary between the sealed liquid container and the external environment. It provides a controlled gas discharge path through the gas discharge hole, mediating the pressure buildup inside the container and preventing direct damage to the container structure
2Stress or pressure
If air introduction port is added to maintain pressure (ink cartridge), then the internal pressure can be kept at suitable level, but the container is still deformed or damaged due to generated gas
Solution Approach 1:
The gas discharge hole in the packaging body converts the harmful effect of generated gas into a beneficial function. Instead of allowing gas to accumulate and cause damage, the packaging body provides a dedicated path for gas to escape, transforming the potential harm into a pressure relief mechanism that protects the container
3Reliability
If gas is discharged from containing chamber, then the container deformation is prevented, but gas stays between containing chamber and packaging body causing packaging body breakage
Solution Approach 1:
The gas discharge hole is pre-formed in the packaging body before the liquid container is sealed and before gas generation occurs. This preliminary provision of a gas escape path ensures that gas can continuously discharge during storage and transportation, preventing both container deformation and packaging body breakage
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
The design effectively discharges generated gas, preventing deformation and breakage of the container, even when containing liquids that produce gas due to chemical changes, thereby enhancing the stability and reliability of the liquid container.
Implementation Method 1
the hydrogen penetration amount of the packaging body is equal to or larger than the hydrogen penetration amount of the member partitioning the containing chamber
Data Source
AI summary
A liquid container according to an aspect of this invention is a liquid container which is packaged with a packaging body, in which the liquid container has a containing chamber in which liquid which temporarily generates gas by a chemical change of contained components is contained, the hydrogen penetration amount of a member partitioning the containing chamber is 0.0001 ml/cm2·day·atm or more and 0.01 ml/cm2·day·atm or lower per day, the hydrogen penetration amount of the packaging body is equal to or larger than the hydrogen penetration amount of the member partitioning the containing chamber, and the vapor penetration amount of the packaging body is lower than the vapor penetration amount of the member partitioning the containing chamber.