Invention Grant
- Patent Title: Black-to-color shifting security element
- Patent Title (中): 黑色到彩色安全元素
-
Application No.: US11912348Application Date: 2006-04-05
-
Publication No.: US08147932B2Publication Date: 2012-04-03
- Inventor: Claude-Alain Despland , Albert Stichelberger , Edgar Müller , Pierre Degott
- Applicant: Claude-Alain Despland , Albert Stichelberger , Edgar Müller , Pierre Degott
- Applicant Address: CH Prilly
- Assignee: Sicpa Holding SA
- Current Assignee: Sicpa Holding SA
- Current Assignee Address: CH Prilly
- Agency: Greenblum & Bernstein, PLC
- Priority: EP05103729 20050504
- International Application: PCT/EP2006/061322 WO 20060405
- International Announcement: WO2006/117271 WO 20061109
- Main IPC: B44F1/10
- IPC: B44F1/10 ; B41M5/00 ; G03G7/00

Abstract:
The invention discloses a security element for a banknote, a document of value, right or identity, a ticket, a label, a branded good identifier, or a tax banderole. The element comprises a combination of a coating containing at least one optically variable pigment having a substantial viewing-angle dependent color variation, with at least one selective spectral absorbing material, which blocks out visible spectral components reflected by the optically variable pigment at orthogonal incidence. The security element appears black when viewed at orthogonal angle, and colored when viewed at grazing angle.
Public/Granted literature
- US20090278345A1 Black-to-Color Shifting Security Element Public/Granted day:2009-11-12
Information query