Segmented Fountain Roller Elements for Multi-Ink Flexographic Printing
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Solution Overview
Problem
There is a need for a simple inking system for flexographic printing that can simultaneously provide different inks to different portions of a printing plate, particularly one that operates with low volumes of ink.
Innovation Solution
The inking system includes an anilox roller with cells for ink transfer, a fountain roller system with coaxial elements and uniform ink transfer zones, and a segmented ink tray with separate segments for each fountain roller element, allowing different inks to be used in different zones.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single ink tray is used for the entire fountain roller, then the system is simple, but different inks cannot be supplied to different zones of the printing plate
Solution Approach 1:
The ink tray is divided into multiple separate segments or compartments, each corresponding to a specific zone of the fountain roller. This segmentation allows different inks to be supplied to different zones independently, enabling multi-ink printing capabilities while maintaining a relatively simple overall structure that builds upon the conventional single ink tray design.
2Adaptability or versatility
If a conventional single fountain roller is used, then the structure is simple, but multiple inks cannot be transferred to different zones of the anilox roller
Solution Approach 1:
The fountain roller is divided into multiple independent fountain roller elements, each responsible for transferring a specific ink to the corresponding zone of the anilox roller. Each element can be independently configured and replaced, providing multi-ink transfer capability while maintaining modularity and ease of maintenance.
Solution Approach 2:
The fountain roller elements are designed to be universal components that can be interchanged to accommodate different ink types and printing requirements. This multi-functionality allows the same basic structure to serve multiple purposes by simply changing the fountain roller elements rather than redesigning the entire system.
3Quantity of substance
If large volumes of ink are used in the ink tray, then sufficient ink is available for printing, but ink waste increases and cost-effectiveness decreases
Solution Approach 1:
Each segment of the ink tray is designed to hold only the specific ink required for its corresponding zone, rather than filling the entire tray with large volumes of ink. This local allocation ensures that ink is available where needed while minimizing the total ink volume required in the system, thereby reducing waste and improving cost-effectiveness.
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
This system enables accurate alignment of patterns by using transparent and opaque inks in different zones and reduces ink usage by allowing smaller volumes to be used in each zone, making it cost-effective for high-volume manufacturing.
Implementation Method 1
an anilox roller with a cylindrical outer surface having a plurality of cells, the cells being indentations in the outer surface of the anilox roller configured to transfer ink to the flexographic printing plate
Data Source
AI summary
An inking system is used to transfer a plurality of different inks to an anilox roller in a flexographic printing plate in a flexographic printing system. A fountain roller system including a plurality of coaxial fountain roller elements, each fountain roller element having an ink transfer zone with an ink transfer zone radius, wherein the ink transfer zone radii for the plurality of fountain roller elements are the same. A segmented ink tray includes a plurality of ink tray segments, wherein each fountain roller element is mounted within a corresponding ink tray segment. Each fountain roller element is adapted to receive ink from the corresponding ink tray segment and transfer the received ink to a corresponding zone of the anilox roller.