Wiper Segmentation for Multi-Liquid Head Cleaning Purity
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Solution Overview
Problem
Existing wiping mechanisms for liquid discharge heads that handle different liquids risk mixing and turbidity in cleaning liquids, leading to inefficiencies.
Innovation Solution
A wiping device with separate cleaning tanks and wiping portions for each liquid type, using distinct cleaning liquids to prevent mixing and enhance cleaning efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single wiper is used to wipe multiple heads discharging different liquids, then the device complexity is reduced, but the cleaning liquid becomes contaminated and turbid
Solution Approach 1:
The wiper is divided into multiple independent wiping portions (first wiping portion, second wiping portion, etc.), each dedicated to a specific head discharging a specific liquid. This segmentation prevents cross-contamination between different liquids while maintaining a relatively simple overall device structure.
Solution Approach 2:
The cleaning liquid tanks are separated into multiple independent tanks (first cleaning liquid tank, second cleaning liquid tank, etc.), each containing cleaning liquid for a specific liquid type. This extraction of cleaning functions prevents mixing of different cleaning liquids and maintains their purity.
2Reliability
If separate cleaning tanks are used for each liquid type, then the cleaning liquid purity is maintained, but the device complexity increases
Solution Approach 1:
The wiper serves multiple functions by having different wiping portions for different heads, while the cleaning mechanism uses multiple tanks that can be independently managed. This multi-functionality approach maintains cleaning liquid purity without requiring completely separate wiping devices for each head.
Solution Approach 2:
Multiple wiping portions are combined into a single integrated wiper structure, and multiple cleaning tanks are combined into one cleaning system. This merging reduces device complexity compared to having completely separate devices for each head, while still maintaining the purity of individual cleaning liquids.
3Device complexity
If the same cleaning liquid is used for all wiping portions, then the device complexity is reduced, but the cleaning effectiveness decreases due to liquid mixing
Solution Approach 1:
The cleaning system is segmented into multiple independent cleaning liquid tanks, each dedicated to removing a specific liquid type. This segmentation ensures that cleaning liquids remain pure and effective, maintaining high cleaning efficiency without requiring overly complex system architecture.
Data Source
AI summary
A wiping device includes a wiper to wipe a first head to discharge a first liquid with a first portion of the wiper; and wipe a second head to discharge a second liquid different from the first liquid with a second portion of the wiper different from the first portion; a first cleaning tank containing a first cleaning liquid to remove the first liquid attached to the first portion of the wiper; and a second cleaning tank containing a second cleaning liquid to remove the second liquid attached to the second portion of the wiper.