Elastomeric Sealing Component with Multiple Seals for Inkjet Printhead
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Solution Overview
Problem
Inkjet printing devices face challenges with fluid leaks during the separation and mating of ink supplies and printheads, requiring effective sealing mechanisms to prevent ink leakage during installation, use, and removal.
Innovation Solution
The use of a sealing component with elastomeric materials and specific design features, such as castellations and multiple seals, ensures secure insertion and removal of the printhead needle, maintaining fluid containment and minimizing leakage risks through annular and compression seals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sealing component is used to prevent fluid leaks during printhead insertion and removal, then reliability is improved, but device complexity increases due to multiple sealing mechanisms
Solution Approach 1:
The sealing component is divided into multiple independent sealing mechanisms: a first seal at the peripheral edge for sealing against the ink supply enclosure, a second seal for sealing against the printhead needle during insertion, and a third seal for sealing against the enclosure opening. Each seal addresses specific leakage points, providing comprehensive protection while maintaining modular functionality.
Solution Approach 2:
Different regions of the sealing component have specialized properties tailored to their specific sealing functions. The peripheral edge features a first seal with specific material characteristics for enclosement sealing, while internal regions contain second and third seals with properties optimized for needle and opening sealing respectively. This localized specialization ensures optimal performance at each sealing interface.
2Ease of operation
If the printhead needle is inserted through the sealing component for ink access, then ease of operation is improved, but the risk of fluid leaks increases
Solution Approach 1:
The second seal acts as an intermediary mechanism between the printhead needle and the ink supply enclosure. This seal is specifically designed to engage with the needle during insertion, creating a temporary sealed pathway that allows ink access while preventing leakage around the needle. The third seal provides an additional intermediary barrier at the enclosure opening.
Solution Approach 2:
The sealing component is pre-configured with multiple sealing mechanisms in place before printhead insertion begins. The first seal is already established to seal the enclosure periphery, and the second and third seals are positioned to automatically engage with the needle and opening respectively during insertion, providing proactive leak prevention rather than reactive measures.
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 sealing component effectively prevents fluid leaks by providing redundant sealing mechanisms, allowing for secure access and removal of the printhead without compromising the ink supply's internal pressure, ensuring reliable operation and reducing maintenance issues.
Implementation Method 1
the elastomeric material of the sealing component compresses into the compression region of the exterior side surface so that the exterior side surface defines at least one seal
Data Source
AI summary
A sealing component includes an elastomeric material. An exterior side surface of the elastomeric material is to define at least a first seal with a first external mating member into which the sealing component is insertable. An interior surface of the elastomeric material is to define a second seal and a third seal with a second external mating member insertable into the sealing component.