Passport Paper Security Thread with Page-Specific Features

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Solution Overview

Problem

Current passport papers lack sufficient security features that can be easily verified by laypersons to prevent forgery, necessitating enhanced protection against document reproduction.

Innovation Solution

A web of passport paper with security threads running in both longitudinal and transverse directions, featuring individual security features on each page, such as window or pendulum security threads with metallic characters, and multi-level watermarks, which are embedded within the paper or accessible on the surface, providing unique page numbering and authentication markers.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional passport paper without individual page security features is used, then the manufacturing process is simple and cost-effective, but the security protection against forgery is insufficient

Engineering Contradiction:

Improvesecurity protection against forgeryVSAvoidsecurity feature structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The security thread is divided into multiple segments, each containing individual security features for specific pages. The thread runs through the entire passport book but has distinct functional segments corresponding to different pages, allowing individual page authentication while maintaining a unified security structure

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Individual security features are placed at specific locations within the security thread corresponding to specific pages. Each page has its own unique security features (such as metallic characters or patterns) embedded in the thread at the precise location where that page will be positioned, creating localized security zones

Inventive Principle:

Principle #3Local quality

2Reliability

If security threads with individual page features are embedded in each page, then forgery protection is significantly enhanced, but the manufacturing complexity and technological barrier increase

Engineering Contradiction:

Improveauthenticity verificationVSAvoidproduction process complexity

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The security thread with all individual page features is manufactured and prepared in advance as a complete assembly. The thread is then introduced into the passport book during binding, eliminating the need for complex individual page-by-page security feature application processes

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The security thread serves as an intermediary carrier that holds all individual page security features in their correct positions. This intermediary approach simplifies manufacturing by allowing features to be pre-positioned on the thread rather than individually applied to each page during assembly

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If multiple security features are integrated into the passport paper, then the technological barrier for counterfeiters increases, but the ease of authenticity verification by laypersons may be compromised

Engineering Contradiction:

Improvesecurity barrier heightVSAvoidauthenticity check simplicity

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

Metallic characters or patterns are embedded in the security thread that change appearance or become visible under different lighting conditions or angles. These optical effects create visually striking features that are both technologically sophisticated and easily observable by laypersons without special equipment

Inventive Principle:

Principle #32Color changes

Solution Approach 2:

While the passport contains multiple security features, the design ensures that at least one or two key features are prominently visible and easily checkable on each page. Not all security features need to be complex or hidden - some can be simple visual indicators that provide immediate authentication

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentEP2933376B1Sheet of passport paper for producing a passport book

Publication Date: 2018.03.21 GIESECKE & DEVRIENT CURRENCY TECHNOLOGY GMBH

Figure 1a~1b
Figure 2~3

AI summary

The invention relates to a passport paper web (40) for the production of a passport book with passport book pages provided with page-specific security threads, wherein the passport paper web (40) has a longitudinal direction (L) and a transverse direction (Q) and contains at least in the longitudinal direction (L) a plurality of sheets (42) which in turn are each subdivided at least in the longitudinal direction (L) into a plurality of individual units (44) which correspond to the passport book pages of the passport book to be produced, wherein the passport paper web (40) is provided with at least one security thread (50) extending in the longitudinal direction (L) which contains a plurality of individual unit-specific security features (52) which are each assigned to specific individual units (44) and wherein the security thread (50) is arranged in the register to the individual units (44) so that the individual unit-specific security features (52) lie on or in the respective assigned individual units (44).