Embossed Data Carrier Ink Writing Security
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Solution Overview
Problem
Existing data carriers, such as passports and official documents, are vulnerable to smudging, spreading, and forgery of handwritten signatures, which can be easily manipulated using chemical solvents or scraping methods.
Innovation Solution
A printed area with an embossed surface structure is introduced, featuring embossed lines at different angles and depths, creating a tactile security feature that prevents smudging and enhances anti-counterfeiting capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a smooth printed area is used for handwritten signatures, then ink writing is easy and straightforward, but the ink smudges and spreads easily
Solution Approach 1:
The patent applies local quality by creating an embossed pattern with varying line depths and spacings in different regions of the printed area. The embossed lines have different depths (some deeper, some shallower) and spacings (some finer, some coarser) to locally optimize ink holding capacity while maintaining overall writability. This local variation in surface topology prevents smudging in high-risk areas while preserving ease of writing in other areas.
2Ease of manufacture
If a plain surface is used for signatures, then the document is simple to produce, but the signature is vulnerable to forgery and manipulation
Solution Approach 1:
The patent applies preliminary action by pre-forming an embossed pattern on the document surface before the signature is written. This embossed pattern, created through embossing or intaglio printing, establishes a tactile and visual security feature that prevents forgery before the signing act occurs. The pre-existing surface structure makes it difficult for counterfeiters to replicate the document, thereby enhancing security in advance.
Solution Approach 2:
The patent applies color changes by creating visual effects through the embossed pattern that manifest as light and shadow variations when viewed from different angles. The embossed lines and shapes reflect light differently, creating visible patterns that are difficult to replicate. This optical effect provides an additional security layer without complicating the manufacturing process, as the embossing itself generates the visual complexity.
3Reliability
If an embossed pattern is added to prevent smudging and forgery, then security and anti-smudging capabilities increase, but the device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the printed area into multiple embossed lines with different characteristics (depths, spacings, orientations) rather than using a single uniform pattern. The embossed pattern consists of multiple discrete lines that can be individually optimized for different functions (ink holding, visual security, tactile detection). This segmented approach allows complex security features to be built from simple, manufacturable elements.
Solution Approach 2:
The patent applies copying by using intaglio printing to create the embossed pattern, which is a replication process where a master plate with engraved lines is used to imprint the pattern onto the document substrate. This copying method allows the complex embossed pattern to be reproduced consistently and accurately across multiple documents through a standardized printing process, thereby managing device complexity through process standardization.
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
The embossed pattern effectively prevents ink smudging and spreading while significantly increasing the security against forgery and manipulation, as the tactile feature is difficult to replicate without specialized equipment.
Implementation Method 1
The printed area comprises embossed lines extended at different angles to each other defining different shapes... The embossed lines in some of the regions are finer than coarser and deeper and more widely spaced lines in the other regions... the written ink is held durably into the trough
Data Source
Figure 1~2
AI summary
The present invention relates generally to a data carrier comprising a data sheet. Said data sheet comprises a substrate material wherein at least one printed area is printed. Said printed area is configured for ink written signature. Said printed area is produced by imprinting via intaglio printing and comprises tactile perceptibility structured embossed pattern produced by the imprinting. Said tactile structured embossed pattern is configured to hold the ink of the ink written. The present invention prevents unwanted smudging or spreading when writing on the printed area. Moreover, the present invention addresses also the forgery and manipulation drawbacks on ink written data on data carrier.