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Method of manufacturing a security element for a security document

A technology of security elements and security documents, applied in the field of security elements, can solve problems such as irregularities, affecting the beauty of security documents, leaving traces, etc.

Active Publication Date: 2012-05-09
OBERTHUR FIDUCIAIRE SAS (PREVIOUSLY KNOWN AS FCO 2 SAS)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The disadvantage of this technique is that wetting the substrate can result in an oily and sticky appearance and even drying can affect the aesthetics of the security document
[0008] Furthermore, the clearing composition also tends to migrate to the surface of the substrate, causing translucent areas to appear distorted and irregular, and to leave marks

Method used

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  • Method of manufacturing a security element for a security document
  • Method of manufacturing a security element for a security document
  • Method of manufacturing a security element for a security document

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0053] Figure 1A with Figure 1B is a security document comprising a security element according to the first embodiment. This security document is indicated by the general reference 10 .

[0054] The security document 10 comprises a substrate 12 demarcating opposing first and second surfaces F1, F2. In this example, the security document 10 is a page of a passport. As a variant, the security document 10 may be a banknote or any other important document.

[0055] The security document 10 includes a security element 14 formed on a portion of a substrate 12 . The security element 14 comprises a first zone Z1 forming a first pattern 18 extending on the first surface F1 of the substrate 12 . This first pattern 18 is formed by deposition of an impermeable substance 20 . Preferably, the impermeable substance 20 is also light-transmissive and is referred to as coating substance 20 in the following description. It is obvious that, as a variant, the impermeable substance 20 may b...

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PUM

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Abstract

A translucent area (Z2) is formed in the element (14) by applying a substance (24) that transparentizes its substrate (12). Thus, the method includes a step of applying a substance (20) that impermeabilizes the substrate (12) over a first area (Z1) on a first side (F1) of the substrate, surrounding a second area (Z2) devoid of the impermeabilizing substance (20). The impermeabilizing substance (20) prevents impregnation of the substrate (12) by the transparentizing substance (24) in the first area (Z1). The method then includes a step of applying the transparentizing substance (24) to at least the second area (Z2) so as to impregnate the substrate (12) in order to make it translucent in this area (Z2). The first (Z1) and second (Z2) areas form first (18) and second (22) patterns respectively, making up an image that can be observed from both sides (F1, F2) of the substrate (12).

Description

technical field [0001] The invention relates to the technical field of security elements for important or security documents, and is particularly suitable for the manufacture of transparent security elements, that is to say, images comprising translucent areas of the base of the security element observed by transmitted or even reflected light. Background technique [0002] It is known that in the field of important documents, especially banknotes, one or more security elements of different nature can be added to prevent these documents from being forged. There are different types of security elements, especially "level 1" security elements. [0003] Typically, primary security elements that anyone can easily identify just by looking closely are difficult to manufacture. [0004] A transparent security element comprises a substrate with complementary patterns printed on both surfaces of the substrate, disposed within a substantially translucent or even transparent area of ​​...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41M3/14B42D15/00D21H21/26D21H21/40D21H21/44D21H21/46D21H21/48B41M3/00B44F1/00B44F3/00B44F5/00
CPCD21H21/26D21H21/48B42D15/0013B41M3/14B41M3/144D21H21/44D21H21/40B42D25/29
Inventor J·吉洛特X·博尔德
Owner OBERTHUR FIDUCIAIRE SAS (PREVIOUSLY KNOWN AS FCO 2 SAS)
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