Liquid Ejecting Head Surface Configuration for Storage Stability
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Solution Overview
Problem
Existing liquid ejecting head structures face challenges in preventing damage to the ejection surface during storage and installation, as they often require contact with mounting surfaces, making it difficult to maintain the ejection surface separate from other components.
Innovation Solution
The design includes a liquid ejecting head with specific surface configurations that allow for separation of the ejection surface from other components during storage, featuring a first surface fixed to a support body, and third and fourth surfaces that can contact a holder to maintain separation, reducing the size of the head and nozzle spacing, while also incorporating a circuit substrate and drive elements for efficient ink ejection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the liquid ejecting head is stored with the ejection surface facing downward for safe keeping, then the head can be stored in a stable position, but the ejection surface may come into contact with the mounting surface and be damaged
Solution Approach 1:
The patent introduces a fourth surface and fifth surface that extend in a direction perpendicular to the ejection surface, creating a three-dimensional support structure. When the liquid ejecting head is stored upright, these additional surfaces contact the mounting surface, preventing the ejection surface from contacting the mounting surface while maintaining storage stability
Solution Approach 2:
The patent divides the support function into multiple surfaces (first surface for fixation, fourth and fifth surfaces for mounting surface contact). This segmentation allows different surfaces to serve different functions: the first surface fixes the head to the support body, while the fourth and fifth surfaces prevent ejection surface contact during storage
2Reliability
If the liquid ejecting head is fixed to the support body with the first surface, then the head can be securely mounted, but the size of the head in the first direction increases
Solution Approach 1:
The patent concentrates the mounting function at specific locations (first surface contacting support body, fourth and fifth surfaces contacting mounting surface) rather than extending the overall head length. This localized quality approach maintains mounting reliability while minimizing the head's dimensional footprint
3Adaptability or versatility
If multiple members are stacked to form the liquid ejecting head, then the head can be constructed with separated functional components, but the complexity of assembly increases
Solution Approach 1:
The patent combines multiple functional members (first surface member, fourth surface member, fifth surface member) into an integrated liquid ejecting head structure. While the members are functionally separated, they are positioned and fixed relative to each other to form a unified assembly, maintaining adaptability while managing assembly complexity through systematic arrangement
Data Source
AI summary
A liquid ejecting head includes a set-up surface that faces a support body in a negative Z direction and that is fixed to the support body, an ejection surface that faces in a positive Z direction and in which are located nozzles that eject ink, and a first support surface and a second support surface that face in the positive Z direction and are located on the negative Z direction side of the ejection surface, and, when viewed in the Z direction, are separated from each other with the ejection surface interposed therebetween in the Y direction.