Liquid Ejecting Head Branch Gas Path for Drive Circuit Cooling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing liquid ejecting apparatuses face challenges in uniformly cooling multiple drive circuits due to varying heat generation amounts, leading to inefficient cooling and potential overheating.
Innovation Solution
The liquid ejecting head incorporates a gas path with branch paths for each drive circuit, allowing gas to flow from introduction portions to discharge portions while bypassing certain branch paths, ensuring uniform cooling of drive circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the drive circuit with the largest heat generation amount is disposed closest to the intake port, then the drive circuit with the largest heat generation amount can be efficiently cooled, but the plurality of drive circuits cannot be uniformly cooled when heat generation amounts vary
Solution Approach 1:
The gas path is divided into multiple branch paths, with each branch path corresponding to a specific drive circuit. This segmentation allows independent cooling control for each drive circuit, enabling uniform cooling across all drive circuits regardless of their varying heat generation amounts.
Solution Approach 2:
Each branch path is configured with specific introduction portions and discharge portions tailored to the local heat generation characteristics of each drive circuit. This local quality approach ensures that each drive circuit receives appropriate cooling based on its specific thermal requirements.
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 configuration enables uniform cooling of drive circuits, preventing overheating and ensuring consistent performance regardless of varying heat generation amounts.
Implementation Method 1
a gas path through which the gas flows from the one or the plurality of introduction portions to the discharge portion
Data Source
AI summary
A liquid ejecting head includes an introduction portion for introducing a gas supplied, a discharge portion for discharging the gas, and drive circuits provided in each of head chips, in which the drive circuits include a first drive circuit for driving the first head chip and a second drive circuit for driving the second head chip, a gas path through which the gas flows from the introduction portion to the discharge portion includes a first path coupled to the introduction portion, a second path coupled to the discharge portion, a first branch path coupling the first path and the second path, and a second branch path coupling the first path and the second path so as not to pass through the first branch path, the first drive circuit is disposed in the first branch path, and the second drive circuit is disposed in the second branch path.