专利检索 ap:("Korea Minting, Security Printing & ID Card Operating Corp.") AND inv:"CHOE, Won Kyun" 第 1 页

1.

发明公开
ALNICO-BASED HARD MAGNETIC PARTICLE AND METHOD FOR MANUFACTURING SAME 审中-公开

公开(公告)号：EP3886125A1

公开(公告)日：2021-09-29

申请号：EP19939690.4

申请日：2019-08-05

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

发明人： KIM, Soo Dong , CHOE, Won Kyun , JOO, Sung Hyun , KIM, Hong Keon , KIM, Hyun Soo

IPC分类号： H01F1/06 , H01F41/02 , C09D11/52

摘要： Disclosed is an AlNiCo-based hard magnetic particle containing Al, Ni, Co, Cu, Ti, and the balance of Fe. The AlNiCo-based hard magnetic particle contains Co in an amount of 10 to 17 wt%, has a coercive force of 250-450 Oe, and has a residual magnetization/coercive force rate of 0.06 or more. The AlNiCo-based hard magnetic particle according to the present invention can advantageously guarantee magnetic properties suitable for being detected by a magnetic reluctance device due to a low content of Co.

2.

发明公开
MAGNETIC PARTICLE FOR SECURITY INK AND SECURITY INK COMPRISING SAME 审中-公开

公开(公告)号：EP3886124A1

公开(公告)日：2021-09-29

申请号：EP19939433.9

申请日：2019-08-05

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

发明人： KIM, Soo Dong , CHOE, Won Kyun , JOO, Sung Hyun , KIM, Hong Keon , KIM, Hyun Soo

IPC分类号： H01F1/06 , H01F27/255 , H01F3/08 , H01F1/047 , C09D11/52

摘要： Disclosed are a magnetic particle and a security ink containing the same. The magnetic particle includes a magnetic core, and a metal coating layer formed outside the magnetic core. The magnetic particle has a surface roughness (Ra) of 0.15 µm or less. The magnetic particle according to the present invention is suitable for application to a security ink because an abnormal increase in particle size does not occur after the metal coating layer is formed.