BIJOUX EN METAUX PRECIEUX ET LEUR PROCEDE DE FABRICATION

N° de brevet: EP1875827 (A1)
Date de publication: 2008-01-09
Inventeur(s): NAKAJIMA KAZUKI [JP];
Demandeur(s): NAKAKURA SEKIKAZU [JP];NAKAJIMA KAZUKI [JP];
Classification: A44C9/00;A44C25/00;A44C27/00;C23C18/31;
N° de demande: EP20060728738 20060301 
Numéro(s) de priorité: WO2006JP304419 20060301 
This Invention concerns a ring (11) or other accessory and jewelry goods provided with a pattern resulting from processing a metal underlayer (111) of a noble metal and/or a metal plating layer (112) formed on the metal underlayer (111). The noble metal jewelry goods has the metal plating layer (112) formed in a uniform thickness on the whole upper surface of the metal underlayer (111) and has the metal underlayer (111) and/or the metal plating layer (112) enabled by the rod-shaped grinding tool (12) to form glossy regions (111-1) and (111-2) exposing the metal underlayer (111). The noble metal jewelry goods of this invention is enabled to form the metal plating layer region (112) that has not been ground by the rod-shaped grinding tool (12) at all and expose the metal plating layer. The method for the production of the noble metal jewelry goods causes the metal underlayer (111) and/or the metal plating layer (112) of the noble metal jewelry goods to be linearly ground as controlled in fine variation in length, depth and pitch in the direction of the line width and consequently allows formation of different light reflection regions (113) showing no clear periphery of the pattern as compared with the pattern manufactured by using a mask. Thus, the produced noble metal jewelry goods deserves a high price. 



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