Brief description of the establishment of a fiduciary document protege against forgery and fiduciary document obtained.

摘要

The cheque is formed with two zones, one containing the cheque data in open visible form and the other an authentification zone. The open data is transformed to a machine readable form, and printed in a particular part (CB1,CB2) of the cheque at the same time as the open data is printed. The machine readable printed data is then covered with a non-removable sheet (11), which does not impede reading by machine. The protective sheet is then covered with a screening layer that is transparent only to infra-red light to allow laser scanning but prevent visual reading of the coded parts. Finally a top sheet (13) is placed over the screen sheet. The top sheet will have a security image or filigree printing to make forgery more difficult.