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Method for marking valuable articles

A technology for valuables and marking, applied in the direction of machines for branding, processes for producing decorative surface effects, decorative arts, etc., which can solve problems such as restricting applications

Inactive Publication Date: 2010-09-08
VALINMARK
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0011] Therefore, the above-mentioned disadvantages limit the application of known prior art methods

Method used

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Experimental program
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Embodiment Construction

[0017] The disclosed method is performed as described below.

[0018] To carry out the marking process, the identification surface of the product is first polished. By modifying the identified area of ​​the polished surface with a directed ion beam having a given ion energy, an optically visible mark image under reflected light is formed on the polished surface. In the modification step, the composition of the surface layer is changed such that the optical properties of the modified parts can be changed relative to the optical properties of the untreated parts of the recognition surface. The modification of the recognition surface is achieved with a pulsed ion beam passing through a stencil mask, as a result of which modifier ions are implanted into the crystal lattice of the marked region of the surface layer without damaging the covalent bonds between the lattice atoms and thereby The original morphology of the layer is not damaged. Said modification of the optical propert...

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Abstract

The invention relates to methods for marking valuable articles, mainly precious stones, in particular cut diamonds and can be used for article identification. The inventive method for marking valuable articles consists in forming a mark image visible in reflected light on a polished surface by modifying the ions of a surface area to be marked by means of the ion beam having the given ion energy and, while modifying, in converting the structure of the surface layer of a base in such a way as to change the optical characteristics of the modified areas in comparison to the optical characteristics of the untreated areas of the surface to be marked. The area to be marked is modified by a pulsed ion beam through a stencil mask by ion implantation of a modifier into a crystal lattice in the marked area of the base surface layer without destructing covalent bonds between the lattice atoms, i. e. without breaking the original shape of said layer. The optical characteristics of the modified area are changed by using, in the form of a modifier, the material, the ions of which change the integral refraction index of the base material when they are implanted into the crystal lattice in the form of impurity additives.

Description

technical field [0001] The present invention relates to a method of marking valuable objects, mainly precious stones, especially polished diamonds, and can be used for the identification of said objects. Background technique [0002] From the prior art, methods are known for producing optically invisible markings and making them visible, according to which the surface of an object is first polished. On the polished surface, an optically invisible marking image is formed by modifying at least one region of the surface. As a result of the surface modification, the surface energy of the modified site changes. This marked image is then made visible by establishing a meta-stable environment in the vicinity of the aforementioned surface of the object. With the help of said environment, a signature image is generated in the form of a distinguished structure formed by stable phase particles of a metastable environment located at multiple sites with different surface energies on th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B44C1/22H01L23/544
CPCH01J2237/316B25H7/04A44C17/00B44B7/00
Inventor 尤里康斯坦廷诺维奇·尼奇恩科
Owner VALINMARK
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