Binary Ink Developer Suction Cavities for Foam Control
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Solution Overview
Problem
Liquid electro-photography (LEP) printing devices face issues with ink foam generation during the ink recycling process, which can lead to image quality problems and other issues due to foam migration outside the binary ink developer (BID).
Innovation Solution
Incorporating suction cavities within the BID's wiper mechanism to capture and prevent the escape of ink foam, leveraging the negative air pressure created by the sponge roller's expansion after compression, ensuring that ink foam is suctioned back into the system rather than escaping externally.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If ink recycling is performed in the LEP printing device, then ink reuse efficiency is improved, but ink foam is generated and migrates outside the BID causing image quality issues
Solution Approach 1:
The invention converts the harmful ink foam into a beneficial controlled element by using the foam's upward migration tendency to activate the suction mechanism. The foam naturally rises to the wiper mechanism where it is captured and suctioned back, transforming the harmful foam migration into a self-activating foam control system that prevents external contamination while maintaining recycling efficiency
2Object-generated harmful factors
If traditional foam control methods are used, then foam generation is reduced, but device complexity increases and flexibility is reduced
Solution Approach 1:
The invention implements a self-service foam control system where the foam itself activates the control mechanism. As foam rises during recycling, it automatically contacts the wiper mechanism and triggers suction through the cavities, eliminating the need for external sensors, controllers, or additional foam suppression components. The system uses the foam's own behavior to drive its own control
3Object-generated harmful factors
If suction cavities are added to the wiper mechanism, then foam escape is prevented, but device complexity increases
Solution Approach 1:
The invention merges the foam control function directly into the existing wiper mechanism by incorporating suction cavities within it. This integration allows the wiper to simultaneously perform its original cleaning function and the new foam suction function, eliminating the need for separate foam control components and reducing overall device complexity despite adding foam prevention capability
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
Effectively prevents ink foam from escaping the BID, thereby maintaining image quality and resolving associated problems without reducing foam generation, allowing for more flexible development of LEP printing devices.
Implementation Method 1
leveraging the negative air pressure created by the sponge roller's expansion after compression
Data Source
AI summary
A binary ink developer (BID) for a liquid electro-photography (LEP) printing device includes a sponge roller to absorb unused ink. The BID includes a squeezer roller to release the unused ink absorbed by the sponge roller for reuse. The squeezer roller releases the unused ink absorbed by the sponge roller by compressing the sponge roller. Compression of the sponge roller results in ink foam. The BID includes a mechanism having a wall, and a housing that together with the wall of the mechanism defines a passageway between the housing and the wall. The passageway is exposed externally to the BID. The BID includes one or more suction cavities defined within the wall of the mechanism through which the ink foam moves back from the passageway.