METHOD OF COLOURED IMAGE FORMATION ON METALLIC SURFACES Russian patent published in 2009 - IPC B23K26/18 B41M5/00 

FIELD: nanotechnology.

SUBSTANCE: invention refers to method of coloured image formation on metallic surfaces (text and graphic, monochrome and coloured) by means of forming nanostructures in kind of oxide films resulted in process of local heating with heat source of pulse effect (for example, laser radiation, plasma, electro-contacting or other kind of heating). Properties of oxide films (physic-mechanical, geometrical, colorimetric and others) depend on technological parametres of heat effect source, which in their turn are determined with thermal-technical properties of a treated material. The method proceeds from calculation of mode of thermo-pulse effect and of distance between zones of impulse effect in dependence on thermo-physic characteristics of material and parametres of image in such a way, that temperature to be created in the zone of effect will be required and sufficient to form oxide film with a specified colorimetric property.

EFFECT: possibility to apply coloured image on any metal surfaces without their preliminary treatment and without preliminary plotting of graduated curves.

2 cl, 4 dwg, 1 ex