发明名称 |
IRREVERSIBLY MAGNETICALLY INDUCED IMAGES OR PATTERNS |
摘要 |
The present invention relates to the field of the protection of security documents especially banknotes against illegal actions such as robbery or theft. In particular the present invention relates to the field of ink compositions for producing irreversibly magnetically induced images or patterns said inks comprising multichromal microspheres preferably bichromal microspheres (1) that are orientable upon application of a magnetic field and that comprise at least a first portion (2) comprising one or more dyes and/or pigments and at least a second portion (3) comprising one or more magnetic or magnetizable materials wherein said microspheres (1) comprise as the first portion a core (2) having a surface and comprising the one or more dyes and/or pigments and as the second portion a partial coating (3) covering at least a portion of the surface of said core (2) and comprising the one or more magnetic or magnetizable materials. |
申请公布号 |
IN2025DEN2015(A) |
申请公布日期 |
2015.08.14 |
申请号 |
IN2015DELNP2025 |
申请日期 |
2015.03.12 |
申请人 |
SICPA HOLDING SA |
发明人 |
LEFEBVRE OLIVIER;MAGNIN PATRICK;SCHALLER CHRISTOPHE |
分类号 |
B05D3/00;B41M3/14;B42D15/00 |
主分类号 |
B05D3/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|