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1. WO1991000390 - DOCUMENT SECURITY METHOD AND SYSTEM

Publication Number WO/1991/000390
Publication Date 10.01.1991
International Application No. PCT/CA1990/000203
International Filing Date 29.06.1990
Chapter 2 Demand Filed 11.01.1991
IPC
B41M 3/14 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
3Printing processes to produce particular kinds of printed work, e.g. patterns
14Security printing
D21H 21/46 2006.01
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21D84; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G97; PAPER NOT OTHERWISE PROVIDED FOR
21Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper impregnating or coating material, characterised by its function, form or properties
14characterised by function or properties in or on the paper
40Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
44Latent security elements, i.e. detectable or becoming apparent only by use of special verification or tampering devices or methods
46Elements suited for chemical verification or impeding chemical tampering, e.g. by use of eradicators
G03G 21/04 2006.01
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
21Arrangements not provided for by groups G03G13/-G03G19/92
04Preventing copies being made of an original
G07D 7/14 2006.01
GPHYSICS
07CHECKING-DEVICES
DHANDLING OF COINS OR OF VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
7Testing 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
14using chemical means
CPC
B41M 3/142
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING,
3Printing processes to produce particular kinds of printed work, e.g. patterns
14Security printing
142using chemical colour-formers or chemical reactions, e.g. leuco-dye/acid, photochromes
D21H 21/46
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
21Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
14characterised by function or properties in or on the paper
40Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
44Latent security elements, i.e. detectable or becoming apparent only by use of special verification or tampering devices or methods
46Elements suited for chemical verification or impeding chemical tampering, e.g. by use of eradicators
G03G 21/043
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
21Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
04Preventing copies being made of an original
043by 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
G07D 7/14
GPHYSICS
07CHECKING-DEVICES
DHANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
7Testing 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
14using chemical means
Y10S 283/902
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
283Printed matter
902Anti-photocopy
Applicants
  • NOCOPI INTERNATIONAL LTD. [CA/CA]; Suite 260 1450 City Councellors Montreal, Quebec H3A 2E6, CA (AllExceptUS)
  • GUNDJIAN, Arshevir [CA/CA]; CA (UsOnly)
Inventors
  • GUNDJIAN, Arshevir; CA
Agents
  • BAKER, John, A. ; Kirby, Eades, Gale, Baker & Potvin Box 3432 Station D Ottawa, Ontario K1P 6N9, CA
Priority Data
8915400.905.07.1989GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) DOCUMENT SECURITY METHOD AND SYSTEM
(FR) PROCEDE ET SYSTEME DE PROTECTION DE DOCUMENTS
Abstract
(EN)
A method and system sor securing a substrate such as paper and the like against counterfeiting, photocopying, and facsimile transmission and an applicator and paper for use in the method and system and with the applicator. The method and system comprise providing a substrate having a background color on one surface thereof, covering at least one selected area of the surface with one of a colorless color developer and a colorless color former dye, wherein the color developer and color former dye react when mixed to produce a first given color which is different from the background color and applying the other of the colorless color developer and the colorless color former dye to at least a portion of the at least one selected area to change the background color to said first given color.
(FR)
L'invention se rapporte à un procédé et à un système de protection d'un substrat tel qu'un papier et similaire contre la contrefaçon, la photocopie et la transmission par téléfax, ainsi qu'à un applicateur et à un papier conçu pour être utilisé dans un tel procédé et dans un tel système et avec un tel applicateur. Ce procédé et ce système consistent à prévoir un substrat comportant une couleur de fond sur une de ses surfaces, à recouvrir au moins un région sélectionnée de cette surface avec un agent choisi entre un agent développeur de couleur incolore et un agent chromogène incolore, de sorte que le développeur de couleur et l'agent chromogène réagissent lorsqu'ils sont mélangés pour produire une première couleur donnée différente de la couleur de fond, puis à appliquer l'autre agent sur au moins une partie de la région sélectionnée, afin de modifier la couleur de fond en cette première couleur donnée.
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