Liquid Discharge Head Filter Placement for Compact Size
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Solution Overview
Problem
Existing liquid discharge heads face challenges in efficiently managing liquid circulation and filtration, leading to issues with liquid discharge accuracy and apparatus size.
Innovation Solution
A liquid discharge head design incorporating a plurality of nozzles, individual liquid chambers, a common liquid chamber, and a filter portion, where the filter is strategically placed in a wider portion of the common liquid chamber to overlap partially with the common circulation liquid chamber, allowing for effective filtration and compact apparatus size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the filter portion is disposed in the common liquid chamber side by side with the common circulation liquid chamber, then filtration is effective, but the apparatus size increases
Solution Approach 1:
The filter portion is positioned in the second portion of the common liquid chamber, which is not disposed side by side with the common circulation liquid chamber in the direction perpendicular to the nozzle array direction. Instead, the second portion partially overlaps the common circulation liquid chamber in this direction. This spatial reconfiguration from a side-by-side arrangement to an overlapping arrangement in a different dimensional orientation allows effective filtration while maintaining a compact apparatus size.
2Productivity
If the common liquid chamber is divided into first and second portions, then liquid circulation is optimized, but device complexity increases
Solution Approach 1:
The common liquid chamber is divided into a first portion and a second portion. The first portion is disposed side by side with the common circulation liquid chamber in the direction perpendicular to the nozzle array direction, while the second portion is not disposed side by side with the common circulation liquid chamber. This segmentation allows optimized liquid circulation by creating distinct functional zones within the common liquid chamber, improving productivity while the modular nature keeps the added complexity manageable.
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 design enhances liquid discharge accuracy and efficiency while maintaining a compact size by ensuring adequate filtration and optimized liquid circulation, enabling stable and high-quality image formation.
Implementation Method 1
The filter portion is disposed in the common liquid chamber to filter liquid
Data Source
AI summary
A liquid discharge head includes a plurality of nozzles, a plurality of individual liquid chambers, a common liquid chamber, a common circulation liquid chamber, and a filter portion. The common liquid chamber includes a first portion disposed side by side with the common circulation liquid chamber in a direction perpendicular to a nozzle array direction in and a second portion not disposed side by side with the common circulation liquid chamber in the direction perpendicular to the nozzle array direction. In a plan view, the second portion partially overlaps the common circulation liquid chamber in the direction perpendicular to the nozzle array direction. A width of the second portion in the direction perpendicular to the nozzle array direction is greater than a width of the first portion in the direction perpendicular to the nozzle array direction. In the plan view, the filter portion is disposed in the second portion.