Liquid Ejection Head Cleaning With Self-Replacing Wiping Cartridges
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Solution Overview
Problem
Existing liquid ejection devices, such as inkjet printers, face challenges in efficiently removing fixed adhering ink and dust from the nozzle surface, leading to nozzle clogging and instability in ejection characteristics.
Innovation Solution
A self-replacing wiping cartridge system that automatically switches and replaces used wiping cartridges, ensuring continuous and efficient cleaning of the nozzle surface without manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a manual wiping system is used, then the structure is simple, but the ease of operation deteriorates due to manual replacement requirements
Solution Approach 1:
The wiping cartridge system performs self-replacement automatically. The holding portion retrieves a fresh wiping cartridge from the standby portion and installs it without manual intervention, allowing the system to service itself and eliminating the need for user involvement in cartridge replacement.
Solution Approach 2:
The wiping system is divided into functional segments: a used wiping cartridge held by the holding portion, a standby portion storing multiple fresh cartridges, and a replacement mechanism. This segmentation allows the system to maintain continuous wiping capability by automatically switching between segments.
2Productivity
If a single wiping cartridge is used, then the device complexity is low, but the productivity deteriorates due to interruption for manual replacement
Solution Approach 1:
The system ensures continuous wiping operation by maintaining a standby portion with multiple fresh wiping cartridges. When one cartridge is consumed, the automatic replacement mechanism immediately provides a fresh one, eliminating interruptions and maintaining uninterrupted productive action.
Solution Approach 2:
Multiple fresh wiping cartridges are pre-stored in the standby portion before use. This preliminary preparation ensures that when a cartridge is depleted, replacement materials are already ready, allowing immediate substitution without delay to productivity.
3Productivity
If multiple wiping cartridges are stored, then the productivity is maintained, but the loss of substance increases due to storage space requirements
Solution Approach 1:
The standby portion is integrated within or adjacent to the holding portion structure, creating a nested arrangement where multiple wiping cartridges are stored in a compact configuration. This nesting minimizes the space required while maintaining the ability to store multiple cartridges for continuous operation.
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
The system maintains stable ejection characteristics by effectively removing adhering ink and dust, enhancing user convenience and reducing maintenance efforts.
Implementation Method 1
a wiping member (13) that comes into contact with the nozzle surface (3a) and wipes the nozzle surface (3a)
Data Source
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AI summary
A liquid ejection device includes a liquid ejection head, a standby portion, a hold portion, and an operation portion. The liquid ejection head includes a nozzle surface. The standby portion supports a wiping cartridge. The hold portion holds the wiping cartridge. The operation portion moves the hold portion relatively to the standby portion and the liquid ejection head from a position at which the hold portion holds the wiping cartridge that is not held by the hold portion and that is supported by the standby portion to a position at which the wiping cartridge held by the hold portion comes into contact with the nozzle surface.