Secure document

Details Secure document Secure document

B - Operations, Transporting

42

D

B42D 15/10 (2006.01) B42D 15/00 (2006.01)

Patent

CA 2243750

Unauthorized alteration of a document can be avoided in a secure document that includes a substrate (10) defining the body of the document. Indicia (24, 26, 30, 32, 36 and 40) located on the substrate (10) designate an area (42) to receive variable information by an impression. The variable information is that whose alteration is to be avoided. A chemical, carbonless imaging system (44) is disposed on the substrate (10) at the area (42) and is operative to form a visible image upon receipt of an impression and a transparent film (46) is located on the substrate (10) to cover the area (42). As a consequence of the construction, any attempt to alter an image appearing on the film (46) will be apparent from the original imaging of the chemical carbonless imaging system (44) or by smudging thereof indicating an alteration attempt.

L'invention est une méthode servant à empêcher les modifications non autorisées dans un document en protégeant celui-ci au moyen d'un substrat (10) qui définit le corps du document. La méthode utilise des vignettes (24, 26, 30,32, 36 et 40) placées sur ce substrat (10) qui délimite une zone (42) où des informations sont introduites par une opération d'impression. Ces informations sont celles dont la modification doit être empêchée. Une substance d'imagerie autocopiante (44) est déposée sur le substrat (10) dans la zone en question (42) et peut former une image visible sous l'effet d'une impression et un film transparent (46) est placé sur le substrat (10) pour couvrir la zone (42). Comme conséquence de cette construction, toute tentative de modification de l'image apparaissant sur le film (46) se manifestera sur le support d'imagerie autocopiant (44), ou se manifestera par un maculage sur ce support.

Affiliated with

Also associated with

Rating

Secure document does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Secure document, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Secure document will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1943960