Liquid Ejecting Head Nozzle Row Alignment for Precision Assembly
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Solution Overview
Problem
Existing liquid ejecting heads with obliquely arranged nozzle rows face challenges in precisely regulating nozzle positions and simplifying assembly, leading to potential shifts and increased complexity.
Innovation Solution
A liquid ejecting head design with nozzle rows arranged at a predetermined angle, where each row's nozzles are positioned to overlap or shift orthogonally, allowing for precise regulation and efficient utilization, and a common fixing plate is used to simplify assembly and improve yield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple head modules are arranged in one nozzle row, then long recording head for multi-color recording is realized, but nozzle position shifts easily arise and assembly becomes complicated
Solution Approach 1:
The invention divides the recording head into multiple head modules, each containing a single nozzle row. This segmentation allows each module to be manufactured and assembled independently with high precision, then combined to form a long recording head capable of multi-color recording. The modular approach prevents position shifts by maintaining simple, single-row structures in each module.
Solution Approach 2:
The invention transitions from arranging multiple nozzle rows in a single head module to arranging multiple head modules with single nozzle rows in sequence. This dimensional reorganization simplifies the structure of each individual module while achieving the same functional capability through spatial arrangement, thereby improving manufacturing precision.
2Manufacturing precision
If multiple head modules with one nozzle row are arranged, then assembly complexity increases, but manufacturing precision for nozzle position regulation is improved
Solution Approach 1:
The invention merges multiple head modules into a single integrated recording head unit, where each module contains one nozzle row. This merging approach simplifies assembly by reducing the number of components that need to be aligned, while maintaining high manufacturing precision through the standardized, modular design of each head module.
3Stability of the object's composition
If nozzle rows are obliquely arranged, then lateral spreading of nozzle height arrangement is suppressed, but nozzle position regulation between rows becomes difficult
Solution Approach 1:
The invention segments the nozzle rows into separate head modules, each containing a single nozzle row. This segmentation eliminates the complexity of regulating positions between multiple rows within a single module, while the oblique arrangement of modules maintains stability in the overall nozzle height configuration.
Data Source
AI summary
A liquid ejecting head including a head main unit having L (L is an integer of 2 or more) nozzle rows parallel to one another in a first direction in which, for each nozzle row, in a case in which one side in a second direction that intersects the first direction at a predetermined angle in a range of 0 degrees to 90 degrees is the first side, the nozzle row furthest to the first side among the L nozzle rows does not have a nozzle positioned at a distance M or more further to the first side in the second direction than the nozzle furthest to the first side of a nozzle row neighboring in the second direction.