FR2565006A1 - Secret marking by high-density contrast - Google Patents

Abstract

Identification method allowing authentication and monitoring of the origin of a product characterised by an invisible marking produced by virtue of substances which are opaque to X-rays.

Description

 a present invention conrenc- ur marking process, invisible to the naked eye, intended to code objects to subsequently control the distribution, path, origin and authenticity.

The process called CHD (or HDC er English) for Contrast
High Density allows the intimate and indelible marking, in all forms, of all objects, products, documents of any kind, shape, volume or dimensions.

 This marking is carried out with substances not containing any pigmentation forming part of the spectrum register visible by the human eye, as regards the markings surface ClF. (As regards the markings between two layers, it is possible to use contrast agents visible to the naked eye).

For all the processes used, these are substances e
High Density, highlighted by Radiation in simple contrast.

The method therefore comprises the means for reading the marking, these means being able to vary in power as a function of the material constituting the SIJR support or IN which this marking has been carried out. All use an X-ray source.

This reading can use the intermediary of a sensitive surface (spelling) or, of a screen (scopy), readable in direct eCca, with lead) or by reflection in a mirror.

The images made up by this screen can be taken. A Video camera to be viewed remotely - in real time or delayed (magnetic recording) on an e @@ a @ T.V.

Development.

I / Marking.

The substances or materials used make it possible to mark in an unidentifiable and non-modifiable way (without destruction of the support).

They make it possible to include information which will be used to determine the origin of the product and / or the batch of manufacture from which it comes and / or the date of its manufacture etc ...

This marking essentially allows the legitimacy of the wearing of the commercial brand used on the product to be checked.

(usurpation of brands on counterfeit products).

These substances or materials used probe products whose essential bases are
- iodine and its derivatives
- lead and its derivatives
- barium and its derivatives and all products offering opacity to X-rays, once introduced ON or IN a lower density material (the support).

According to a variant, the labeling product could use a weakly radioactive isotope coded, readable by a computerized scanner.

They are used as a printing ink
- either on the surface
- either embedded in the material or in a "sandwich" for maximum efficiency.

II / Reading
The devices used to read the information introduced into the material use a more or less powerful X-ray source depending on the materials to be crossed.

The devices are portable or fixed assemblies depending on the required power and require protection of the personnel who use them, against the dangerous effects of direct or indirect X-rays by reflection.

They require an electric power source, autonomous or on sector.

These devices are devices on the market which have not been designed specifically for this process, even if certain adjustments are made to them to respond more precisely to the use made of them for the CHD process.
The method according to the invention is intended for the perfume, cosmetic, pharmaceutical, food and chemical industries, but it can also be used for any other application as soon as it seems necessary to secretly code; a document, cards letters of credit, banknotes etc ...

The method according to the invention makes it possible to trace the origin of a product and establishes its authenticity. He certifies that the product examined has followed the path assigned to him and that he has reached the destination for which it was intended.

The marking according to the CHD process therefore makes it possible to follow the life of a product from its conception to its final consumption (destruction) considerably complicating the diversion of destination, fraud, smuggling and counterfeiting.

Explanation of the drawings
The CHD process makes it possible to secretly mark a packaging or an object (figure 1)
- Figure 1 shows any open package.

 - Figure 2 shows the same flat packaging that is to say as it is at the time of its manufacture. The nachuree part (marked K) indicates an area in which is included the CHD marking, for example.

- Figure 3 (M) one side of the packaging (which has been marked with the CHD process (I ') as it appears in simple contrast when it is subjected to X-rays,
- Figure 4 shows a section (F. 2 ') of this part (M) of the packaging. The CHD marking is embedded (C) between the layer (A) of the outer face of the packaging and the middle layer (B) which serves as a support for printing the marking
The inner layer (D 'strengthens the cardboard but remains optional.

The margining is carried out during the manufacture of the packaging at a time chosen by the cardboard manufacturer or the printer.

Thus embedded between two layers (A & B) the marking (C) is inaccessible and practically impossible to modify by overloading or scraping without causing significant destruction of the cardboard
- Figure 5 shows the process of reading the CHD marking.

the packaging with the naked eye has no notable features. However subject to a low dose of N rays generated by the device (r) we see the marguage appear
CHP (I) through the walls of the package (G) on a screen (H! Or a sensitive surface (H).

Claims (1)

CLAIM Identification process, allowing the authentication and the origin control of a product, characterized by an invisible marking made thanks to substances opaque to X-rays.