Liquid Ejection Device Wiping Section with Segmented Pressing Members
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Solution Overview
Problem
In liquid ejection devices, varying nozzle surface heights make it difficult for the wiping section to maintain uniform contact, leading to inadequate removal of liquid from nozzle surfaces.
Innovation Solution
The implementation of multiple pressing members and elastic members that press the absorbing member against the nozzle surfaces, allowing for uniform contact and effective liquid removal despite height variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single absorbing member is used to wipe multiple nozzle surfaces, then the structure is simple, but uniform contact with varying nozzle surfaces cannot be achieved
Solution Approach 1:
The wiping section is divided into multiple independent pressing members (first pressing member, second pressing member, etc.), each equipped with its own elastic member. This segmentation allows each pressing member to independently adapt to the height of individual nozzle surfaces, ensuring uniform contact across all nozzle surfaces despite height variations.
Solution Approach 2:
Each pressing member is provided with individual elastic members that can independently adjust their pressing force according to the local height conditions of each nozzle surface. This local quality approach ensures that each region of the absorbing member contacts its corresponding nozzle surface with appropriate pressure, regardless of height variations.
2Productivity
If the absorbing member contacts all nozzle surfaces uniformly, then effective liquid removal is achieved, but height variations in nozzle surfaces prevent uniform contact
Solution Approach 1:
The pressing members are designed to be movable in the vertical direction, allowing them to dynamically adjust their position and pressing force according to the actual height of each nozzle surface. This dynamic adjustment capability enables the absorbing member to maintain uniform contact with nozzle surfaces of varying heights, ensuring effective liquid removal across all nozzles.
Solution Approach 2:
The elastic members change their compression parameter (pressing force) according to the height of each nozzle surface. When a nozzle surface is higher or lower, the corresponding elastic member compresses to a different degree, automatically adjusting the pressing force to maintain optimal contact pressure for liquid removal.
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
Ensures consistent and effective wiping of nozzle surfaces, ensuring reliable liquid removal and reducing the risk of uneven contact and clogging.
Implementation Method 1
an absorbing member that absorbs the liquid clinging to the multiple nozzle surfaces by contacting the multiple nozzle surfaces
Implementation Method 2
multiple elastic members configured to press each of the multiple pressing members toward the ejection section
Data Source
AI summary
A liquid ejection device includes an ejection section having multiple nozzle surfaces aligned in one direction and configured to eject liquid from nozzles that are opened on each of the multiple nozzle surfaces, and a wiping section that wipes the multiple nozzle surfaces, wherein the wiping section further including an absorbing member that absorbs the liquid clinging to the multiple nozzle surfaces by contacting the multiple nozzle surfaces, multiple pressing members that press the absorbing member against the multiple nozzle surfaces, and multiple elastic members that press each of the multiple pressing members toward the ejection section.