2, where, in this example representation, the test void pantograph is generated with different dot sizes and different black pixel densities andįIG. 5 is an enlarged view of a portion of one of the test void pantographs of the test sheet of FIG. 2, where, in this example representation, the test void pantograph is generated with different dot sizes at the same black pixel density įIG. 4 is an enlarged view of a portion of one of the test void pantographs of the test sheet of FIG. 3B after the void pantograph has been scanned įIG. 3A after the void pantograph has been printed įIG. 3B depicts a void pantograph formed via the image of FIG. 3A is a schematic representation of an image įIG. 2 depicts an embodiment of a computer-generated test sheet including multiple test pantographs įIG. 1 is a flow diagram depicting an embodiment of a method using void pantographs įIG. For the sake of brevity, reference numerals or features having a previously described function may or may not be described in connection with other drawings in which they appear.įIG. BRIEF DESCRIPTION OF THE DRAWINGSįeatures and advantages of embodiments of the present disclosure will become apparent by reference to the following detailed description and drawings, in which like reference numerals correspond to similar, though perhaps not identical, components. In general, pantograph approaches may be used to hide in plain sight a variety of other information that can be read and acted upon. Void pantographs may be used for packaging, labels, documents, or the like. Some prominent examples of void pantographs are those that are used as backgrounds for checks, which, for example, display “VOID” or “COPY” on the reproduced image. Void pantographs are used to create copy-evident backgrounds for a variety of security documents. The present disclosure relates generally to a method for using void pantographs.
0 kommentar(er)
