Split Fountain Ink Opacity Control for Document Security
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Solution Overview
Problem
Current anti-counterfeiting techniques in document security are inadequate in preventing the reverse engineering of printing plate setups during the prepress stage, as they rely heavily on visual cues that can be deciphered by counterfeiters, especially in traditional counterfeiting workflows where detailed redrawing of artwork is involved.
Innovation Solution
The implementation of a system utilizing multiple printing plates with split fountains containing inks of varying opacity levels, oscillator rollers to control opacity transitions, and a press to apply these plates to a substrate, creating a composite image that obscures the plate setup by generating a higher number of opacity levels and complex patterns, making it difficult for counterfeiters to accurately replicate the original artwork.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional counterfeiting workflows use multiple printing plates with single color inks, then the printing process is simpler and easier to replicate, but the security against counterfeiting is weaker because plate separation and redrawing is easier
Solution Approach 1:
The patent changes the parameter of ink opacity from uniform to variable within split fountains. Each split fountain contains ink transitioning between multiple opacity levels (e.g., light, medium, dark), which allows a single plate to produce multiple tonal values. This parameter change makes it difficult for counterfeiters to determine the number of plates used, as the same opacity variations could be achieved with different plate configurations
Solution Approach 2:
The patent segments the ink delivery system into multiple split fountains on each printing plate. Instead of using separate plates for different opacity levels, the system divides each plate's ink supply into segmented zones with different opacity characteristics. This segmentation allows complex opacity patterns to be produced from fewer plates, increasing counterfeit resistance while reducing system complexity
2Loss of information
If split fountains with multiple opacity levels are used on each plate, then the number of opacity levels in the composite image increases making plate separation harder, but the manufacturing complexity increases
Solution Approach 1:
The patent applies parameter changes by varying ink opacity levels within split fountains rather than creating additional plates. By controlling the opacity parameter of ink in different zones of each fountain, the system achieves multiple opacity levels per plate, concealing the actual number of plates from counterfeiters while avoiding the need to manufacture additional complex plates
Solution Approach 2:
The patent makes each printing plate multi-functional by enabling it to produce multiple opacity levels through split fountains. Instead of requiring separate plates for each opacity level, a single plate with properly configured split fountains can generate light, medium, and dark opacity variations, reducing the total number of plates needed and simplifying manufacturing
3Manufacturing precision
If oscillator rollers are used to control opacity transitions, then the opacity level transitions between split fountains are precisely controlled, but the device complexity and difficulty of operation increase
Solution Approach 1:
The patent replaces complex mechanical opacity control mechanisms with ink formulation variations. Instead of using mechanical devices to physically adjust opacity during printing, the system pre-configures split fountains with inks of different opacity levels. This substitution eliminates the need for complex mechanical adjustment mechanisms while maintaining precise opacity control
Solution Approach 2:
The patent applies preliminary action by pre-configuring the split fountains with specific ink opacity levels before the printing process begins. The oscillator rollers and ink formulations are set up in advance to produce the desired opacity transitions, eliminating the need for real-time adjustments during operation and simplifying press operation
4Difficulty of detecting and measuring
If the composite image generates more opacity levels than physical ink levels, then counterfeiters cannot accurately determine the press setup, but the complexity of reproducing the image increases
Solution Approach 1:
The patent uses parameter changes in ink opacity to create a composite image with more opacity levels than the number of physical ink formulations. By overlapping multiple split fountains with different opacity levels on the same plate, the system generates composite opacity levels that cannot be directly traced back to the original plate configuration, making press setup detection difficult for counterfeiters
Data Source
AI summary
This application relates generally systems and methods for interrupting counterfeiting workflows, and more specifically to methods for adequately concealing aspects of printer configuration, such as number of plates used to print a document or a setup of inks and split fountains. It is therefore possible to obscure the individual plate images and application of ink to those plate images, thereby impeding accurate redrawing of security artwork.