Interchangeable Printhead Maintenance Facility Core
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Solution Overview
Problem
Pagewidth inkjet printheads face issues with nozzle clogging due to small nozzles and dust or dried ink, requiring sophisticated maintenance facilities that wear out over time, necessitating adaptable maintenance regimes and replaceable components.
Innovation Solution
A modular printhead maintenance facility with interchangeable maintenance structures, such as a print platen, spittoon, capper, and wiper, mounted on a core structure that can rotate to optimize maintenance operations based on printhead design and ink properties, allowing for customization and replacement of worn parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed maintenance facility is used, then the structure is simple and reliable, but it cannot be adapted to different printhead designs or ink properties
Solution Approach 1:
The maintenance facility is divided into separate interchangeable modules (maintenance structures) that can be independently selected and mounted on a core structure. Each module performs a specific maintenance function, allowing the system to be customized for different printhead designs and ink properties without redesigning the entire facility.
Solution Approach 2:
The core structure serves as a universal mounting platform that can accommodate multiple different maintenance structures through standardized engagement formations. This allows a single core structure to support various maintenance regimes by simply changing the mounted structures, achieving adaptability without proportionally increasing overall complexity.
2Reliability
If maintenance structures are fixed and non-replaceable, then the device complexity is reduced, but the maintenance structures wear out and become less effective over time
Solution Approach 1:
The maintenance structures are designed as replaceable components that can be removed and replaced when they wear out or become less effective. The core structure retains the engagement formations to receive new maintenance structures, allowing the system to recover functionality without replacing the entire maintenance facility.
3Reliability
If the entire maintenance facility must be replaced when components wear, then reliability is maintained, but the loss of time and resources increases
Solution Approach 1:
By segmenting the maintenance facility into replaceable modules mounted on a permanent core structure, only the worn maintenance structures need to be replaced rather than the entire facility. This significantly reduces replacement time and resource consumption while maintaining reliability.
4Manufacturing precision
If maintenance structures are customized for specific printhead styles, then maintenance precision is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
Different maintenance structures are designed with specific local characteristics optimized for particular printhead styles or ink properties. Each structure can be independently manufactured with the precise features needed for its specific function, while sharing common mounting interfaces with the core structure.
Data Source
AI summary
A printhead maintenance facility with a core that mounts in an inkjet printer for movement relative to an inkjet printhead. The core has a plurality of maintenance station mounting sites, each with engagement formations. The core also has a plurality of maintenance structures for operation with the printhead, the plurality of maintenance structures each being mountable to at least one other of the plurality of maintenance station mounting sites.