GB2258660B - Luminescent materials and their preparation - Google Patents

Luminescent materials and their preparation

Info

Publication number
GB2258660B
GB2258660B GB9117543A GB9117543A GB2258660B GB 2258660 B GB2258660 B GB 2258660B GB 9117543 A GB9117543 A GB 9117543A GB 9117543 A GB9117543 A GB 9117543A GB 2258660 B GB2258660 B GB 2258660B
Authority
GB
United Kingdom
Prior art keywords
preparation
luminescent materials
luminescent
materials
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
GB9117543A
Other versions
GB2258660A (en
GB9117543D0 (en
Inventor
Robin Bratchley
Derek Michael Wallace
Ranby Peter Whitten
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
De la Rue International Ltd
Original Assignee
Thomas De la Rue and Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thomas De la Rue and Co Ltd filed Critical Thomas De la Rue and Co Ltd
Priority to GB9117543A priority Critical patent/GB2258660B/en
Publication of GB9117543D0 publication Critical patent/GB9117543D0/en
Publication of GB2258660A publication Critical patent/GB2258660A/en
Application granted granted Critical
Publication of GB2258660B publication Critical patent/GB2258660B/en
Priority to HK79396A priority patent/HK79396A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/50—Sympathetic, colour changing or similar inks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/378—Special inks
    • B42D25/382—Special inks absorbing or reflecting infrared light
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7766—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals
    • C09K11/7767—Chalcogenides
    • C09K11/7769—Oxides
    • C09K11/7771—Oxysulfides
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/08—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means
    • G06K19/10—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards
    • G06K19/14—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards the marking being sensed by radiation
GB9117543A 1991-08-14 1991-08-14 Luminescent materials and their preparation Expired - Fee Related GB2258660B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB9117543A GB2258660B (en) 1991-08-14 1991-08-14 Luminescent materials and their preparation
HK79396A HK79396A (en) 1991-08-14 1996-05-09 Luminescent materials and their preparation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9117543A GB2258660B (en) 1991-08-14 1991-08-14 Luminescent materials and their preparation

Publications (3)

Publication Number Publication Date
GB9117543D0 GB9117543D0 (en) 1991-10-02
GB2258660A GB2258660A (en) 1993-02-17
GB2258660B true GB2258660B (en) 1995-06-07

Family

ID=10699974

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9117543A Expired - Fee Related GB2258660B (en) 1991-08-14 1991-08-14 Luminescent materials and their preparation

Country Status (2)

Country Link
GB (1) GB2258660B (en)
HK (1) HK79396A (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6802992B1 (en) 1997-03-05 2004-10-12 Wieczoreck Juergen Non-green anti-stokes luminescent substance
DE19804012A1 (en) * 1998-02-02 1999-08-05 Giesecke & Devrient Gmbh Value document
DE19804024A1 (en) * 1998-02-02 1999-08-05 Giesecke & Devrient Gmbh Value document
US6731785B1 (en) 1999-07-26 2004-05-04 Cummins-Allison Corp. Currency handling system employing an infrared authenticating system
EP1116755A1 (en) 2000-01-10 2001-07-18 Sicpa Holding S.A. Coating composition, preferably printing ink for security applications, method for producing a coating composition and use of glass ceramics
EP1117060A1 (en) * 2000-01-10 2001-07-18 Sicpa Holding S.A. Authentication of a security article
DE10113267B4 (en) 2001-03-16 2019-05-09 Bundesdruckerei Gmbh Use of an anti-Stokes phosphor in security documents
DE10208397A1 (en) * 2002-02-27 2003-09-11 Honeywell Specialty Chemicals Anti-Stokes phosphor composition
US20060154180A1 (en) 2005-01-07 2006-07-13 Kannurpatti Anandkumar R Imaging element for use as a recording element and process of using the imaging element
DE102005032831A1 (en) * 2005-06-30 2007-01-04 Bundesdruckerei Gmbh Holmium-doped anti-Stokes phosphors and security features with these phosphors
DE102006047851A1 (en) * 2006-10-10 2008-04-17 Giesecke & Devrient Gmbh Authenticity feature in the form of luminescent substances
AT505007B1 (en) * 2007-04-30 2008-10-15 Oesterreichische Staatsdrucker USE OF A FLUORATE AS A SAFETY FEATURE, SAFETY PRINTING INK, METHOD AND DEVICE FOR CHECKING A DOCUMENT AND DOCUMENT AND SAFETY FEATURES
US8328102B2 (en) 2009-12-21 2012-12-11 Honeywell International Inc. Method and authentication apparatus for authenticating value documents
EP2570468B1 (en) 2011-09-13 2013-11-27 Bundesdruckerei GmbH Anti-stokes luminescent substances and use thereof in security documents
DE102013020391A1 (en) * 2013-12-10 2015-06-11 Polysecure Gmbh Marked layer structure, process for its preparation and use thereof
DE102016120979A1 (en) 2016-11-03 2018-05-03 Bundesdruckerei Gmbh Method for checking the authenticity of a security feature and arrangement for checking the authenticity of a security document with a security feature
DE102019122010A1 (en) * 2019-08-15 2021-02-18 Polysecure Gmbh Article comprising fluorescent marker particles and methods of identifying the same
CN111815334A (en) * 2020-06-22 2020-10-23 深圳市丰腾防伪技术有限公司 Anti-counterfeiting tracing method based on cipher

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB650459A (en) * 1946-05-03 1951-02-28 Franz Urbach Improvements in photographic recording and luminescent materials therefor
EP0092240A1 (en) * 1982-04-20 1983-10-26 Fuji Photo Film Co., Ltd. Radiation image storage panel
US4586811A (en) * 1982-04-23 1986-05-06 Ricoh Company, Ltd. Confidential document reproduction prevention method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB650459A (en) * 1946-05-03 1951-02-28 Franz Urbach Improvements in photographic recording and luminescent materials therefor
EP0092240A1 (en) * 1982-04-20 1983-10-26 Fuji Photo Film Co., Ltd. Radiation image storage panel
US4586811A (en) * 1982-04-23 1986-05-06 Ricoh Company, Ltd. Confidential document reproduction prevention method

Also Published As

Publication number Publication date
GB2258660A (en) 1993-02-17
HK79396A (en) 1996-05-17
GB9117543D0 (en) 1991-10-02

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20050814