Inkjet Head Chip Electrode Isolation for Narrow Channel Pitch
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing inkjet head technologies face challenges in ensuring inter-electrode distance while narrowing the pitch of channels, leading to potential short circuits and reduced reliability and durability.
Innovation Solution
The implementation of an actuator plate with electrical conducting material removal areas formed by laser irradiation between adjacent channels, ensuring adequate inter-electrode distance and electrical reliability through strategic electrode decoupling and connection design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the pitch of channels is narrowed to achieve high resolution, then the dimension of the drive wall decreases, but it becomes difficult to ensure the inter-electrode distance of each channel
Solution Approach 1:
The patent divides the drive wall into multiple independent electrode regions (first electrode and second electrode) separated by non-ejection channels. This segmentation allows each electrode to be independently formed and positioned, ensuring adequate inter-electrode distance even when the overall channel pitch is narrowed for high resolution.
Solution Approach 2:
The non-ejection channels serve as intermediary structures between adjacent ejection channels. These non-conductive channels act as physical barriers and insulators, maintaining the required inter-electrode distance between adjacent electrodes while allowing the ejection channels to be closely spaced for high resolution.
2Measurement precision
If the pitch of channels is narrowed, then high resolution is achieved, but the reliability decreases due to potential short circuits between adjacent electrodes
Solution Approach 1:
The non-ejection channels function as intermediary insulating structures between ejection channels containing electrodes. This intermediary structure prevents direct electrical contact between adjacent electrodes, eliminating short circuit risks while maintaining narrow channel pitch for high resolution.
Solution Approach 2:
The patent applies different properties to different regions: ejection channels contain conductive electrodes for actuation, while non-ejection channels remain non-conductive to provide electrical isolation. This local differentiation of electrical properties ensures reliability by preventing short circuits between adjacent electrodes in the high-resolution configuration.
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
This approach enhances the reliability and durability of the head chip by preventing short circuits and ensuring consistent electrical conduction, even with narrow channel pitches.
Implementation Method 1
an electrical conducting material removal area in which a laser irradiation scar is formed throughout an entire area in the second direction between the first opening and the second opening is disposed
Data Source
AI summary
There are provided a head chip, a liquid jet head, a liquid jet recording device, and a method of manufacturing a head chip each capable of ensuring an inter-electrode distance of each of channels while achieving narrowing of a pitch of the channels. In the head chip according to an aspect of the present disclosure, an electrical conducting material removal area in which laser irradiation scars are formed throughout an entire area in an X direction of a portion located between a lower end opening of an ejection channel and a lower end opening of a non-ejection channel is disposed in a portion located between the lower end opening of the ejection channel and the lower end opening of the non-ejection channel in a lower surface of an actuator plate.