EP0428828A3 - Process for the detection of copies - Google Patents

Process for the detection of copies Download PDF

Info

Publication number
EP0428828A3
EP0428828A3 EP19900114925 EP90114925A EP0428828A3 EP 0428828 A3 EP0428828 A3 EP 0428828A3 EP 19900114925 EP19900114925 EP 19900114925 EP 90114925 A EP90114925 A EP 90114925A EP 0428828 A3 EP0428828 A3 EP 0428828A3
Authority
EP
European Patent Office
Prior art keywords
colour
orange
fluorescent
shade
mid
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.)
Granted
Application number
EP19900114925
Other languages
German (de)
Other versions
EP0428828A2 (en
EP0428828B1 (en
Inventor
Folker Jung
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.)
BAYROPA JUNG GmbH
Original Assignee
BAYROPA JUNG GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6393928&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0428828(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by BAYROPA JUNG GmbH filed Critical BAYROPA JUNG GmbH
Publication of EP0428828A2 publication Critical patent/EP0428828A2/en
Publication of EP0428828A3 publication Critical patent/EP0428828A3/en
Application granted granted Critical
Publication of EP0428828B1 publication Critical patent/EP0428828B1/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/08—Photoprinting; Processes and means for preventing photoprinting
    • 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
    • B41M3/144—Security printing using fluorescent, luminescent or iridescent 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

Abstract

In order to be able to distinguish coloured copies from original documents, e.g. driving licences, the original is printed with one fluorescent and one non-fluorescent offset ink, these inks having approximately the same colour shade, e.g. the colour shade orange. In the copy, the fluorescent colour is reproduced in the incorrect shade, e.g. in the case of orange the colour seen will now be mid-brown, so that the colours orange and mid-brown appear on the copy.
EP90114925A 1989-11-21 1990-08-03 Process for the detection of copies Revoked EP0428828B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3938603A DE3938603A1 (en) 1989-11-21 1989-11-21 METHOD FOR DETECTING COPIES
DE3938603 1989-11-21

Publications (3)

Publication Number Publication Date
EP0428828A2 EP0428828A2 (en) 1991-05-29
EP0428828A3 true EP0428828A3 (en) 1991-08-14
EP0428828B1 EP0428828B1 (en) 1994-06-15

Family

ID=6393928

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90114925A Revoked EP0428828B1 (en) 1989-11-21 1990-08-03 Process for the detection of copies

Country Status (3)

Country Link
EP (1) EP0428828B1 (en)
AT (1) ATE107234T1 (en)
DE (2) DE3938603A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL99930A0 (en) * 1991-11-01 1992-08-18 Egged Israel Transport Coopera Low contrast color combination for preventing copying via color photocopying
DE4220344C2 (en) * 1992-06-24 1994-06-23 Trautwein Gmbh & Co Plaque protected against duplication and / or improper removal and reuse
DE4236143A1 (en) * 1992-10-26 1994-04-28 Bayer Ag Substrate with visible information protected against copying - prepd. with combination of adjacent fields of emitting and remitting colourants of almost same nuance when viewed without fluorescence
EP0603117B1 (en) * 1992-12-03 1996-12-27 Ciba-Geigy Ag Method for preparing coloured, printed security papers
IT1275363B (en) * 1994-07-21 1997-08-05 Alagao Ag PROCEDURE FOR THE ANTI-COUNTERFEIT PROTECTION OF DOCUMENTS MADE ON PAPER SUPPORTS OR OTHER OPPORTUNITIES
DE29501488U1 (en) * 1995-01-31 1995-03-30 Granderath Gmbh J Anti-counterfeit ticket
DE29513468U1 (en) * 1995-08-22 1997-01-02 Hummel Gmbh U Co Counterfeit-proof document
GB9719459D0 (en) * 1997-09-12 1997-11-12 Bank Of England Printed articles
GB2370349A (en) * 2000-12-19 2002-06-26 Innovision Res And Technology Information providing apparatus such as a question and answer game
GB0228303D0 (en) 2002-12-04 2003-01-08 Rue De Int Ltd Security device and method
WO2006040832A1 (en) 2004-10-15 2006-04-20 Kenji Yoshida Printing structure of medium surface on which dot pattern is formed by printing, printing method, and its reading method
US7520601B2 (en) 2004-10-29 2009-04-21 Agfa Graphics, N.V. Printing of radiation curable inks into a radiation curable liquid layer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2139955A (en) * 1983-05-20 1984-11-21 Gen Electric Plc Preventing unauthorised copying

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3713861A (en) * 1969-12-04 1973-01-30 Xerox Corp Inhibitor device
US4277514A (en) * 1978-03-07 1981-07-07 Toppan Printing Co., Ltd. Forgery resistant document with colored areas and method for thwarting reproduction of same
DE2910176A1 (en) * 1979-03-15 1980-09-25 Guenter Alt Illegal reproduction prevention for gramophone records - involves printing identification code in ink visible only in UV
JPS58184967A (en) * 1982-04-23 1983-10-28 Ricoh Co Ltd Preventing method of duplication of confidential document

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2139955A (en) * 1983-05-20 1984-11-21 Gen Electric Plc Preventing unauthorised copying

Also Published As

Publication number Publication date
DE3938603A1 (en) 1991-05-23
EP0428828A2 (en) 1991-05-29
DE59006135D1 (en) 1994-07-21
EP0428828B1 (en) 1994-06-15
ATE107234T1 (en) 1994-07-15

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