DK0642933T3 - Trykt materiale og fremgangsmåde til trykning - Google Patents

Trykt materiale og fremgangsmåde til trykning

Info

Publication number
DK0642933T3
DK0642933T3 DK93913471T DK93913471T DK0642933T3 DK 0642933 T3 DK0642933 T3 DK 0642933T3 DK 93913471 T DK93913471 T DK 93913471T DK 93913471 T DK93913471 T DK 93913471T DK 0642933 T3 DK0642933 T3 DK 0642933T3
Authority
DK
Denmark
Prior art keywords
printed matter
image lines
color
printing
projecting
Prior art date
Application number
DK93913471T
Other languages
Danish (da)
English (en)
Inventor
Toshinori Tanaka
Mitsuo Inoue
Original Assignee
Agency Ind Science Techn
Japan Asrepresented By Directo
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 Agency Ind Science Techn, Japan Asrepresented By Directo filed Critical Agency Ind Science Techn
Application granted granted Critical
Publication of DK0642933T3 publication Critical patent/DK0642933T3/da

Links

Classifications

    • 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
    • B42D15/00—Printed matter of special format or style not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14—Security printing
    • B41M3/148—Transitory images, i.e. images only visible from certain viewing angles
    • 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
    • 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
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/21—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose for multiple purposes
    • 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
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/24—Passports
    • 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
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29—Securities; Bank notes
    • 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
    • B42D25/342—Moiré effects
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/04—Preventing copies being made of an original
    • G03G21/043—Preventing copies being made of an original by using an original which is not reproducible or only reproducible with a different appearence, e.g. originals with a photochromic layer or a colour background
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/003—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using security elements

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Finance (AREA)
  • Computer Security & Cryptography (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Engineering & Computer Science (AREA)
  • Printing Methods (AREA)
  • Credit Cards Or The Like (AREA)
  • Paper (AREA)
  • Making Paper Articles (AREA)
  • Pens And Brushes (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
DK93913471T 1992-06-04 1993-06-02 Trykt materiale og fremgangsmåde til trykning DK0642933T3 (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP4168253A JP2600094B2 (ja) 1992-06-04 1992-06-04 偽造防止用潜像印刷物及びその印刷方法
PCT/JP1993/000740 WO1993024334A1 (en) 1992-06-04 1993-06-02 Printed matter and printing method

Publications (1)

Publication Number Publication Date
DK0642933T3 true DK0642933T3 (da) 1999-03-08

Family

ID=15864588

Family Applications (1)

Application Number Title Priority Date Filing Date
DK93913471T DK0642933T3 (da) 1992-06-04 1993-06-02 Trykt materiale og fremgangsmåde til trykning

Country Status (12)

Country Link
US (1) US5443579A (ja)
EP (1) EP0642933B1 (ja)
JP (1) JP2600094B2 (ja)
KR (1) KR0153034B1 (ja)
AT (1) ATE165770T1 (ja)
AU (1) AU675435B2 (ja)
CA (1) CA2135650C (ja)
DE (1) DE69318402T2 (ja)
DK (1) DK0642933T3 (ja)
ES (1) ES2115062T3 (ja)
RU (1) RU2099197C1 (ja)
WO (1) WO1993024334A1 (ja)

Families Citing this family (56)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19541064A1 (de) * 1995-11-03 1997-05-07 Giesecke & Devrient Gmbh Datenträger mit einem optisch variablen Element
DE19544130A1 (de) 1995-11-27 1997-05-28 Giesecke & Devrient Gmbh Datenträger mit optisch variabler Farbe
PL189595B1 (pl) * 1997-06-06 2005-08-31 De La Rue Giori Sa Wzór zabezpieczający dla papierów wartościowych, papier wartościowy, oraz sposób druku wzoru zabezpieczającego na papierach wartościowych
USD426681S (en) 1998-03-09 2000-06-13 Matrix Ag Inc. Support unit for flooring for animal housings
WO2000041124A1 (fr) * 1998-12-30 2000-07-13 Chao Liu Systeme d'identification de texte cache et son procede de fabrication
JP4281149B2 (ja) * 1999-04-28 2009-06-17 独立行政法人 国立印刷局 偽造防止用潜像模様形成体及びその作製方法
JP4304356B2 (ja) * 1999-04-28 2009-07-29 独立行政法人 国立印刷局 偽造防止用潜像模様形成体及びその作製方法
DE19963849A1 (de) * 1999-12-30 2001-07-12 Giesecke & Devrient Gmbh Datenträger mit gedrucktem Sicherheitselement
CA2411853C (en) 2000-06-09 2007-01-30 Japan As Represented By Secretary Of Agency Of Printing Bureau, Ministryof Finance Authenticity discriminable printed matter and method of generating the same
AU2005234719B2 (en) * 2000-06-09 2007-03-29 National Printing Bureau, Incorporated Administrative Agency Authenticity discriminable printed matter and method of generating the same
JP4734615B2 (ja) * 2001-04-06 2011-07-27 独立行政法人 国立印刷局 特殊潜像模様形成体
JP4576596B2 (ja) * 2001-04-06 2010-11-10 独立行政法人 国立印刷局 特殊潜像模様形成体
JP4734616B2 (ja) * 2001-04-06 2011-07-27 独立行政法人 国立印刷局 特殊潜像模様形成体
JP4599583B2 (ja) * 2001-07-03 2010-12-15 独立行政法人 国立印刷局 特殊潜像模様形成体
DE60220604T2 (de) * 2001-09-07 2008-01-31 Kba-Giori S.A. Bedienelement für bedruckte Gegenstände
CA2399356C (en) 2001-09-07 2012-01-24 Kba-Giori S.A. Control element for printed articles
DE10146912A1 (de) 2001-09-24 2003-04-10 Giesecke & Devrient Gmbh Verfahren zur Individualisierung von Sicherheitsdokumenten und entsprechendes Sicherheitsdokument
JP2004106313A (ja) * 2002-09-18 2004-04-08 Dainippon Printing Co Ltd 潜像パターンを有する印刷物とその作製方法
JP2004106311A (ja) * 2002-09-18 2004-04-08 Dainippon Printing Co Ltd 潜像パターンを有する印刷物及びその作製方法
US8444181B2 (en) * 2002-10-10 2013-05-21 Document Security Systems, Inc. Single-color screen patterns for copy protection
NL1021905C2 (nl) * 2002-11-12 2004-05-26 Konink Nl Munt N V Muntafbeelding opgebouwd uit karakteristieken.
JP4039237B2 (ja) * 2002-12-26 2008-01-30 凸版印刷株式会社 潜像を有する画像形成体
EP1447234A1 (fr) 2003-02-13 2004-08-18 Kba-Giori S.A. Procédé d'impression d'un élément de securité et élément de sécurité
EP1447235A1 (fr) * 2003-02-13 2004-08-18 Kba-Giori S.A. Elément de sécurité et procédé d'impression
US20040221492A1 (en) * 2003-05-06 2004-11-11 Reiman Evan Meredith Card with three dimensional visual effect
ZA200600078B (en) 2003-06-30 2007-04-25 Kba Giori Sa Printing machine
EP1641628B1 (en) * 2003-07-07 2015-04-08 Commonwealth Scientific And Industrial Research Organisation Method of encoding a latent image
AU2004253604B2 (en) * 2003-07-07 2011-07-28 Commonwealth Scientific And Industrial Research Organisation Method of encoding a latent image
DE10361131A1 (de) * 2003-12-22 2005-07-21 Giesecke & Devrient Gmbh Sicherheitselement für Sicherheitspapiere und Wertdokumente
GB2411862B (en) * 2004-03-11 2007-05-30 Security Print Solutions Ltd A printed material having security information printed thereon and a method of printing security information
RU2268152C9 (ru) * 2004-08-11 2006-05-20 Милимарекс Лимитед Печатная продукция и способ ее изготовления (варианты)
US20060061088A1 (en) * 2004-09-23 2006-03-23 Xerox Corporation Method and apparatus for internet coupon fraud deterrence
WO2005053374A2 (en) * 2004-12-02 2005-06-16 Milimarex Limited Printed product
US20080164689A1 (en) * 2005-03-16 2008-07-10 Alpvision Sa Multimodal Security Feature For Counterfeit Detection of Banknotes and Security Documents
GB2430647B (en) * 2005-09-29 2008-09-17 Rue De Int Ltd Security device for security substrates
US9533523B2 (en) 2006-05-31 2017-01-03 Sicpa Holding Sa Reflective features with co-planar elements and processes for making them
US20070279718A1 (en) * 2006-05-31 2007-12-06 Cabot Corporation Reflective features with co-planar elements and processes for making them
DE102007057658A1 (de) * 2007-02-07 2009-06-04 Leonhard Kurz Stiftung & Co. Kg Sicherheitselement
WO2008100172A1 (fr) * 2007-02-15 2008-08-21 Zuev, Boris Alexandrovich Procédé de fabrication d'articles imprimés comprenant plusieurs images cachées (et variantes) et articles imprimés fabriqués par ce procédé
US20090020999A1 (en) * 2007-07-17 2009-01-22 Jimmy Kendrick Security documents and methods of deterring counterfeiting
US20090021000A1 (en) * 2007-07-17 2009-01-22 Mccartney Larry G Security documents and methods of deterring counterfeiting
US20090315319A1 (en) * 2007-07-17 2009-12-24 Jimmy Kendrick Security documents and methods of deterring counterfeiting
JP5062645B2 (ja) 2009-07-31 2012-10-31 独立行政法人 国立印刷局 潜像模様形成体
JP5552647B2 (ja) * 2010-04-23 2014-07-16 独立行政法人 国立印刷局 潜像模様形成体
JP5493109B2 (ja) * 2010-10-26 2014-05-14 独立行政法人 国立印刷局 潜像模様形成体
DE102011016050A1 (de) * 2011-04-04 2012-10-04 Schreiner Group Gmbh & Co. Kg Optisch variables Sicherheitsmerkmal
KR101480127B1 (ko) 2014-02-26 2015-01-07 한국조폐공사 무아레 현상을 이용한 잠상 인쇄물의 제조 방법
CN104191846A (zh) * 2014-08-20 2014-12-10 传虹科技(天津)有限公司 一种防伪印刷品的制作方法
JP6739895B2 (ja) * 2014-11-27 2020-08-12 凸版印刷株式会社 微細線印刷物
EP3392320B1 (en) 2015-12-18 2024-02-28 Sumitomo Metal Mining Co., Ltd. Composition for anti-counterfeit ink, anti-counterfeit ink, printed article for counterfeit prevention, and method of producing composition for anti-counterfeit ink
GB2552508B (en) * 2016-07-26 2021-10-13 Nautilus Gb Ltd Substrate
AU2018289672B2 (en) 2017-06-19 2023-08-10 Sumitomo Metal Mining Co., Ltd. Counterfeit-preventing ink composition, counterfeit-preventing ink, printed article for counterfeit prevention, and method for producing counterfeit-preventing ink composition
GB2565561A (en) * 2017-08-15 2019-02-20 Security Print Solutions Ltd Document security
DE102018106966A1 (de) * 2018-03-23 2019-09-26 Schreiner Group Gmbh & Co. Kg Verfahren zum Aufdrucken einer als Farbkippfläche gestalteten Bedruckung auf die Oberfläche mindestens eines Gegenstandes
DE102018007207B4 (de) * 2018-09-12 2020-10-01 Giesecke+Devrient Mobile Security Gmbh Sicherheitsdokument und Verfahren zur Herstellung eines Sicherheitsdokuments
JP7358785B2 (ja) 2019-06-05 2023-10-11 住友金属鉱山株式会社 偽造防止インク用組成物、偽造防止インク、偽造防止用印刷物

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4033059A (en) * 1972-07-06 1977-07-05 American Bank Note Company Documents of value including intaglio printed transitory images
JPS4934630A (ja) * 1972-08-07 1974-03-30
CA1019012A (en) * 1975-03-24 1977-10-11 Canadian Bank Note Company Coloured transitory images in printed articles
US4184700A (en) * 1975-11-17 1980-01-22 Lgz Landis & Gyr Zug Ag Documents embossed with optical markings representing genuineness information
FR2385161A1 (fr) * 1977-02-08 1978-10-20 Burroughs Corp Moyen de protection de document et document ainsi realise
JPS5545400A (en) * 1978-09-25 1980-03-31 Baylor College Medicine Staining composition and method of bacteria
DE2907809B2 (de) * 1979-02-28 1981-01-15 Gao Gesellschaft Fuer Automation Und Organisation Mbh, 8000 Muenchen Ausweiskarte und Verfahren zu ihrer Herstellung
JPS55117689A (en) * 1979-03-02 1980-09-10 Shiyouei Insatsu Kk Forgery prevented printed matter
JPS5619273A (en) * 1979-07-24 1981-02-23 Toshiba Corp Reset signal generating circuit of microcomputer
JPS5720395A (en) * 1980-07-12 1982-02-02 Hosokawa Katsupansha Kk Printing containing latent image proper to prevention of forgery by reproduction
CH653161A5 (de) * 1981-10-27 1985-12-13 Landis & Gyr Ag Dokument mit einem sicherheitsmerkmal und verfahren zur echtheitspruefung des dokumentes.
JPS58224797A (ja) * 1982-06-23 1983-12-27 オレル・フュスリ・グラフイツシェ・ベトリーベ・アーゲー カ−ド及びその製造方法
CH662989A5 (fr) * 1983-11-16 1987-11-13 De La Rue Giori Sa Papier valeur.
US4715623A (en) * 1984-09-28 1987-12-29 American Bank Note Company Documents having a revealable concealed identifier and the method of making such documents
GB2177975B (en) * 1985-02-07 1989-11-08 Bradbury Wilkinson Embossed articles
US4932685A (en) * 1987-01-13 1990-06-12 Mancuso Robert J Variable color print and method of making same
US5074597A (en) * 1987-01-13 1991-12-24 The Lehigh Press, Inc. Computerized method of generating film masters for embossing and printing color images
US4796921A (en) * 1987-02-02 1989-01-10 Penny-Ohlmann-Neiman, Inc. Hidden printing
DE3741179A1 (de) * 1987-12-04 1989-06-15 Gao Ges Automation Org Dokument mit faelschungssicherem oberflaechenrelief und verfahren zur herstellung desselben
JPH0641225B2 (ja) * 1988-11-07 1994-06-01 大蔵省印刷局長 潜像模様を有するオフセット印刷と凹版印刷のコンビネーション印刷物及びその印刷方法
US5018767A (en) * 1989-01-18 1991-05-28 Schmeiser, Morelle & Watts Counterfeit protected document
JPH02127478U (ja) * 1989-03-31 1990-10-19
JPH0367878A (ja) * 1989-08-07 1991-03-22 Mitsubishi Electric Corp エレベーターの自動放送装置
JP2615401B2 (ja) * 1992-06-04 1997-05-28 大蔵省印刷局長 偽造防止用潜像模様形成体及びその作製方法

Also Published As

Publication number Publication date
DE69318402T2 (de) 1998-09-03
CA2135650C (en) 1999-01-19
EP0642933A1 (en) 1995-03-15
AU675435B2 (en) 1997-02-06
JPH05338388A (ja) 1993-12-21
ATE165770T1 (de) 1998-05-15
RU2099197C1 (ru) 1997-12-20
ES2115062T3 (es) 1998-06-16
AU4354093A (en) 1993-12-30
JP2600094B2 (ja) 1997-04-16
KR0153034B1 (ko) 1998-12-01
US5443579A (en) 1995-08-22
WO1993024334A1 (en) 1993-12-09
DE69318402D1 (de) 1998-06-10
CA2135650A1 (en) 1993-12-09
RU94046390A (ru) 1996-12-10
EP0642933B1 (en) 1998-05-06
EP0642933A4 (en) 1995-07-19

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