Ink Picker Composite Layer Printing Method
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Solution Overview
Problem
Current printing processes for documents like banknotes lack an effective method to create secure, authenticating images with combined color gradients and patterns that are difficult to counterfeit.
Innovation Solution
A method involving an ink receiver that picks up and transfers two distinct ink layers from separate printing templates to form a composite color layer on a substrate, which can be semi-transparent and include holograms, allowing for haptic and visual authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional single-layer printing is used, then the printing process is simple, but the security features and authenticity verification capability are insufficient
Solution Approach 1:
The patent combines multiple ink layers (first ink layer and second ink layer) into a single composite ink layer on one substrate, integrating multiple security features and color patterns that are difficult to counterfeit while maintaining a unified printing structure
Solution Approach 2:
The patent uses composite ink layers with different properties (transparent, translucent, opaque) combined on a single substrate, creating multiple security verification methods (visual, haptic, optical) that enhance authenticity while managing the complexity through systematic layer integration
2Productivity
If multiple ink layers are printed separately on different substrates, then each layer can be optimized, but the overall printing efficiency and productivity decrease
Solution Approach 1:
The patent merges the printing of multiple ink layers into a single simultaneous printing operation on one substrate, eliminating the need for separate printing steps and substrate handling, thereby improving productivity while maintaining precise alignment and composite layer quality
Solution Approach 2:
The patent uses an intermediary transfer mechanism where ink layers are transferred from printing forms to a common substrate through a coordinated process, enabling simultaneous multi-layer deposition with precise registration while maintaining manufacturing precision
3Adaptability or versatility
If opaque ink is used, then the print image is clear and visible, but the ability to create complex color gradients and holographic effects is limited
Solution Approach 1:
The patent applies different ink transparency properties (transparent, translucent, opaque) to different regions or layers of the print, allowing complex color gradients and holographic effects in specific areas while maintaining clear visibility where needed, thereby achieving versatile effects with precise color control
Solution Approach 2:
The patent combines ink layers with different optical properties (transparent, translucent, opaque) to create composite structures that enable multiple visual effects including color gradients, holograms, and variable visibility features, enhancing adaptability while maintaining manufacturing precision through controlled layer integration
Data Source
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AI summary
The invention relates to a method (100) for printing a document comprising a substrate. The method (100) comprises picking up (101) a first color layer of printing ink from a first printing template by an ink picker; after picking up (101) the first color layer, picking up (103) a second color layer of printing ink from a second printing template by the ink picker, so that the ink picker carries the first color layer and the second color layer; and transferring (105) the first color layer and the second color layer by means of the ink picker in the same transfer process to the substrate in order to print the document with a composite color layer.