FR2388354A1 - Dispositif et moyens detectant les signatures imitees, billets faux, chequiers voles - Google Patents

Dispositif et moyens detectant les signatures imitees, billets faux, chequiers voles

Info

Publication number
FR2388354A1
FR2388354A1 FR7712481A FR7712481A FR2388354A1 FR 2388354 A1 FR2388354 A1 FR 2388354A1 FR 7712481 A FR7712481 A FR 7712481A FR 7712481 A FR7712481 A FR 7712481A FR 2388354 A1 FR2388354 A1 FR 2388354A1
Authority
FR
France
Prior art keywords
cheque
key
ink
written
marks
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.)
Withdrawn
Application number
FR7712481A
Other languages
English (en)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7712481A priority Critical patent/FR2388354A1/fr
Publication of FR2388354A1 publication Critical patent/FR2388354A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP 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
    • D21H21/00—Non-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
    • D21H21/14—Non-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 characterised by function or properties in or on the paper
    • D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
    • D21H21/44—Latent security elements, i.e. detectable or becoming apparent only by use of special verification or tampering devices or methods
    • D21H21/46—Elements suited for chemical verification or impeding chemical tampering, e.g. by use of eradicators
    • 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
    • G07D7/14—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 chemical means

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lock And Its Accessories (AREA)

Abstract

Dispositif et moyens détectant les signatures imitées, billets faux, chéquiers voles. Comprenant, un dispositif et un crayon (ou plume) ayant un bout avec encre indélébile; l'autre bout avec encre hydrophile employée alternativement qui détermine un <<chiffre binaire clé >> caché par un brouillage sous une signature. Humecté, le vrai chiffre apparaît lisible. La comparaison avec les signatures présentées permet de détecter les faux ainsi qu'avec des changements de couleur survenus passé du noir à d'autres couleurs conventionnées, et facultativement avec une date tronquée. Combiné aussi avec un crayon marqueur révélateur à base de chlorure de cobalt.
FR7712481A 1977-04-20 1977-04-20 Dispositif et moyens detectant les signatures imitees, billets faux, chequiers voles Withdrawn FR2388354A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7712481A FR2388354A1 (fr) 1977-04-20 1977-04-20 Dispositif et moyens detectant les signatures imitees, billets faux, chequiers voles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7712481A FR2388354A1 (fr) 1977-04-20 1977-04-20 Dispositif et moyens detectant les signatures imitees, billets faux, chequiers voles

Publications (1)

Publication Number Publication Date
FR2388354A1 true FR2388354A1 (fr) 1978-11-17

Family

ID=9189889

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7712481A Withdrawn FR2388354A1 (fr) 1977-04-20 1977-04-20 Dispositif et moyens detectant les signatures imitees, billets faux, chequiers voles

Country Status (1)

Country Link
FR (1) FR2388354A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2539533A1 (fr) * 1983-01-17 1984-07-20 Aussedat Rey Procede et revelateur pour identifier un papier de securite, un papier copiant ou un papier thermoreactif, ainsi qu'instrument manuel pour leur mise en oeuvre

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2539533A1 (fr) * 1983-01-17 1984-07-20 Aussedat Rey Procede et revelateur pour identifier un papier de securite, un papier copiant ou un papier thermoreactif, ainsi qu'instrument manuel pour leur mise en oeuvre

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Legal Events

Date Code Title Description
ST Notification of lapse