- 专利标题: Effect pigment, production method, value document and printing ink
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申请号: US17779270申请日: 2020-11-20
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公开(公告)号: US12129382B2公开(公告)日: 2024-10-29
- 发明人: Michael Rahm , Manfred Heim , Raphael Dehmel , Winfried Hoffmuller
- 申请人: GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH
- 申请人地址: DE Munich
- 专利权人: GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH
- 当前专利权人: GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH
- 当前专利权人地址: DE Munich
- 代理机构: Workman Nydegger
- 优先权: DE 2019008289 2019.11.27
- 国际申请: PCT/EP2020/025525 2020.11.20
- 国际公布: WO2021/104666A 2021.06.03
- 进入国家日期: 2022-05-24
- 主分类号: C09C1/00
- IPC分类号: C09C1/00 ; B41M3/14 ; B41M7/00 ; B42D25/369 ; C09D11/037 ; C09D11/101 ; C09D11/50 ; H01F1/055 ; B42D25/23 ; B42D25/29
摘要:
A platelet-shaped magnetic effect pigment is provided for use in a printing ink, and includes a layer construction with a magnetic layer and at least one optical functional layer, such that the magnetic layer is based on a magnetic material having a column-shaped nanostructure and the magnetic columns respectively have a largely uniform preferential magnetic direction deviating from the platelet plane.
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