While there are inks with special security features (color-shifting properties, for example), the void pantograph is generally created using prepress software and requires specific line screens.
The present invention relates to void pantographs and more particularly, pertains to a method of generating a very large number of different void pantographs. Void pantographs (VPs) have been an important part of the security printing industry for quite a while. Void pantographs are traditionally designed for use with a specific printing technology, such as flexo, gravure, offset or screen printing, for example. The designing of VPs for the mobile printing world of today, which involves electro photographic printing methods presents an almost insurmountable problem because of the great variety of printing machines. The present invention provides a method of generating a large, almost limitless, number of different void pantographs, quickly and easily, which can be tested on the printer and copier combination of interest, allowing selection of a VP that works best for that combination.Ī large number of different void pantographs are generated for testing with a particular make and model of machine in order to select the void pantograph that works best with a particular make and model machine. The foreground dot patterns are generated by varying the dot size, and dot placement in an x-y grid. Void pantograph creation steps software#.
0 kommentar(er)
