公开(公告)号：EP3734624A1

公开(公告)日：2020-11-04

申请号：EP18895212.1

申请日：2018-11-08

申请人： Korea Minting, Security Printing & ID Card Operating Corp.

发明人： KIM, Hong Keon ,  CHOE, Won Gyun ,  KIM, Su Dong ,  KIM, Hyun Soo ,  KIM, E Den ,  CHOI, Hye Jun ,  KANG, Ju Hee

IPC分类号： H01F3/02 ,  H01F1/01 ,  C09D5/23 ,  C09D11/03 ,  B42D25/369 ,  B42D25/29

摘要： The present invention can provide light-colored magnetic particles having a zirconium oxide coating layer formed on a magnetic core, and having a silver coating layer formed on the zirconium oxide coating layer, and a part of the surface of the zirconium oxide coating layer is exposed to the outside, but chemical resistance is excellent, and thus the magnetic particles hardly cause a change of magnetic characteristics so as to be suitable for security elements.

公开(公告)号：EP3712910A1

公开(公告)日：2020-09-23

申请号：EP18879052.1

申请日：2018-11-08

申请人： Korea Minting, Security Printing & ID Card Operating Corp.

发明人： CHOE, Won Gyun ,  KIM, Su Dong ,  KIM, Hong Keon ,  KANG, Ju Hee ,  KIM, Hyun Soo ,  KIM, E Den

IPC分类号： H01F1/20 ,  H01F3/08 ,  C09D11/03 ,  B42D25/369

摘要： AlNiCo-based magnetic particles according to the present invention are hard magnetic particles each comprising: a core particle containing Al, Ni, and Co; and an inorganic shell enclosing the core particle, wherein the core particle is an ultra-fine particle having D 50 of smaller than 12 µm, D 50 being particle size corresponding to 50% in the core particle diameter cumulative distribution, and wherein the core particle has a composition uniformity of equation 1, equation 2, and equation 3 below: 10 ≤ UNF Al 10 ≤ UNF Ni 10 ≤ UNF Co
In equation 1, UNF (Al) is the value obtained by dividing the average Al composition among core particles by the standard deviation of the Al composition on the basis of weight% of the composition. In equation 2, UNF (Ni) is the value obtained by dividing the average Ni composition among core particles by the standard deviation of the Ni composition on the basis of weight% of the composition. In equation 3, UNF (Co) is the value obtained by dividing the average Co composition among core particles by the standard deviation of the Co composition on the basis of weight% of the composition.

公开(公告)号：EP3613594A1

公开(公告)日：2020-02-26

申请号：EP18788460.6

申请日：2018-04-18

申请人： Korea Minting, Security Printing & ID Card Operating Corp.

发明人： KIM, Shin-hyun ,  LEE, Gun Ho ,  CHOE, Won Gyun ,  KIM, Su Dong ,  KANG, Ju Hee ,  KIM, Hong Keon ,  KIM, Hyun Soo ,  KIM, E Den

IPC分类号： B32B37/16 ,  B32B38/00 ,  B32B27/18 ,  G02B1/00 ,  G02B1/04

摘要： The present invention relates to a photonic crystal film, a method for manufacturing the same, and an anti-forgery article comprising the same.