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1.
公开(公告)号:US11214734B2
公开(公告)日:2022-01-04
申请号:US14783222
申请日:2014-04-02
申请人: BUNDESDRUCKEREI GMBH
IPC分类号: B42D25/355 , C09K11/59 , D21H21/30 , D21H21/40 , D01F1/04 , D21H21/46 , D21H21/48 , D21H21/44 , D21H15/10 , D21H21/42 , D01D5/30 , B42D25/309 , C09J7/20 , B42D25/23 , B42D25/387 , B42D25/36
摘要: In order to increase the security of value or security documents 100, a multi-luminescent security element 400 is provided which contains at least one first luminescence means 510 and at least one second luminescence means 520. The first luminescence means 510 can be excited under first excitation conditions Sp-1 for the purpose of luminescence, and the second luminescence means 520 can be excited under second excitation conditions Sp-2 for the purpose of luminescence, said second excitation conditions Sp-2 differing from the first excitation conditions Sp-1. The multi-luminescent security element 400 is additionally equipped with at least one absorber means 600 which prevents an excitation of the at least one first luminescence means 510 under the second excitation conditions Sp-2 for the purpose of luminescence.
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2.
公开(公告)号:US20220195293A1
公开(公告)日:2022-06-23
申请号:US17567383
申请日:2022-01-03
申请人: Bundesdruckerei GmbH
IPC分类号: C09K11/59 , D21H21/30 , D21H21/40 , D01F1/04 , D21H21/46 , D21H21/48 , D21H21/44 , D21H15/10 , D21H21/42 , D01D5/30 , B42D25/309 , C09J7/20 , B42D25/23 , B42D25/387 , B42D25/36 , B42D25/355
摘要: In order to increase the security of value or security documents 100, a multi-luminescent security element 400 is provided which contains at least one first luminescence means 510 and at least one second luminescence means 520. The first luminescence means 510 can be excited under first excitation conditions Sp-1 for the purpose of luminescence, and the second luminescence means 520 can be excited under second excitation conditions Sp-2 for the purpose of luminescence, said second excitation conditions Sp-2 differing from the first excitation conditions Sp-1. The multi-luminescent security element 400 is additionally equipped with at least one absorber means 600 which prevents an excitation of the at least one first luminescence means 510 under the second excitation conditions Sp-2 for the purpose of luminescence.
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公开(公告)号:US09670406B2
公开(公告)日:2017-06-06
申请号:US15105898
申请日:2014-12-12
发明人: Detlef Starick , Manfred Paeschke , Sven Roesler , Jakob Kuen , Andreas Deichsel , Christian Kunath , Monika Voh
CPC分类号: C09K11/644 , B42D25/36 , B42D25/387 , C09K11/7414 , D21H21/48 , G07D7/1205
摘要: The present invention relates to a zinc sulphide phosphor and to a process for producing same. The invention further relates to a security document or document of value, to a security feature and to a method for detecting same. The phosphor according to the invention can act as electroluminescent phosphor and thus be excited by an electrical field, and this can result in emission of electroluminescent light in the blue and/or green color region of the visible spectrum. The phosphor can moreover be excited by UV radiation in the wavelength range than 345 nm to 370 nm, and can thus emit photoluminescent light in the blue color region of the visible spectrum. The phosphor can moreover be excited by UV radiation in the wavelength range from 310 nm in 335 nm, and can thus emit photoluminescent light in the green color region of the visible spectrum.
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