Polymer Pressure Regulator in Inkjet Cartridges for Stable Back Pressure
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing inkjet cartridges face issues with back pressure management, where metal components can react with the solution, leading to degradation or alter the solution, and the pressure regulation is not consistent, affecting printing quality and causing leakage.
Innovation Solution
The use of non-metallic materials, such as polymers, for all components in contact with the solution, and a pressure regulator comprising a non-metallic spring and plates, maintaining a consistent back pressure to prevent leakage and ensure printing quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If metal components are used in the pressure regulator, then structural strength and stability are improved, but chemical reactivity with the solution occurs leading to degradation
Solution Approach 1:
The patent removes metal components from the pressure regulator and replaces them with non-metallic materials (polymer spring, polymer plates). This extraction of harmful metal elements eliminates the chemical reactivity issue while maintaining the pressure regulation function through the elastic properties of the polymer spring and mechanical structure of the polymer plates.
Solution Approach 2:
The patent employs composite material construction where polymer materials are used to create the spring and plate components. These polymer composites provide sufficient mechanical strength and elasticity for pressure regulation while being chemically inert toward the solution, thus resolving the contradiction between strength and chemical reactivity.
2Stress or pressure
If conventional pressure regulation mechanisms are used, then back pressure control is achieved, but consistency deteriorates affecting printing quality
Solution Approach 1:
The patent employs a dynamic pressure regulation mechanism where the polymer spring continuously adjusts to maintain consistent back pressure. The elastic properties of the polymer spring allow it to adapt to volume changes in the reservoir, ensuring stable pressure control throughout the printing process and improving manufacturing precision.
Solution Approach 2:
The patent utilizes the elastic modulus and mechanical properties of polymer materials to achieve consistent pressure regulation. By selecting polymers with appropriate elastic properties and designing the spring geometry, the system maintains stable back pressure parameters throughout operation, ensuring printing quality consistency.
3Stability of the object's composition
If metal pressure regulator components are used, then structural stability is improved, but solution leakage increases due to pressure fluctuations
Solution Approach 1:
The patent removes metal components from the pressure regulator assembly and replaces them with non-metallic polymer materials. This extraction eliminates the source of pressure fluctuations and structural instability that caused leakage, while the polymer spring and plates provide sufficient structural stability for reliable operation.
Solution Approach 2:
The patent employs a disposable polymer pressure regulator assembly that is integrated into the inkjet cartridge. This single-use polymer component ensures reliable pressure control throughout the cartridge's service life without the need for maintenance or replacement, preventing leakage through its consistent elastic properties.
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 solution maintains a stable back pressure, preventing solution leakage and ensuring consistent printing quality by using non-reactive polymers and a bow or leaf spring pressure regulator.
Implementation Method 1
a pressure regulator disposed in the reservoir, the pressure regulator comprising a non-metallic material... a spring... wherein the spring is coupled to a first side of the first plate and to a first side of the second plate
Data Source
AI summary
An inkjet cartridge comprising a reservoir operable to contain a solution and a pressure regulator disposed in the reservoir, the pressure regulator comprising a non-metallic material.