|
Title:
|
METHOD FOR THE EXTRACTION OF PRINT-PROCESS ERROR SIGNALS FROM MATRIX CODES AND ITS APPLICATION IN SECURITY PRINTING |
|
Author(s):
|
Stoyan Maleshliyski, Reinhold Günter, Slavi Bonev |
|
ISBN:
|
978-972-8939-19-9 |
|
Editors:
|
Hans Weghorn, Jörg Roth and Pedro Isaías |
|
Year:
|
2010 |
|
Edition:
|
Single |
|
Keywords:
|
Security printing, matrix codes, offset printing, print-process individualities |
|
Type:
|
Short Paper |
|
First Page:
|
155 |
|
Last Page:
|
160 |
|
Language:
|
English |
|
Cover:
|
|
|
Full Contents:
|
click to dowload 
|
|
Paper Abstract:
|
Whenever digital content is printed on a physical substrate, slight deviations occur. These deviations are due to parasitics in the print process, the individual structure of the substrate and the stochastic nature of the ink flow behaviour. Security printing techniques based on fingerprinting evaluate these deviations and their combinations in order to extract a unique identifier for each individual printed copy. These identifiers are saved in a trusted database and used to detect counterfeits. If a certain identifier cannot be found in the database of the manufacturer, it is considered to be counterfeited. One disadvantage of this concept is the need to save the identifiers of all products in the database. In this paper a new method for the extraction of the printing plate individualities of the offset printing process is proposed and experimentally verified. The extracted fingerprint can be used to identify a whole batch of products printed with the same printing plate, thus eliminating the need to save all of the product identifiers in the database. Furthermore the printing plate error signal is analyzed and its advantages and applications in security printing solutions are discussed. |
|
|
|
|
|
|
