A method for using void pantographs, the method comprising: generating a test sheet including multiple void pantographs, each of the multiple void pantographs including a pantograph foreground and a pantograph background printing the test sheet identifying from the printed test sheet at least one of the multiple void pantographs having a covert or semi-covert pantograph foreground and background scanning the printed test sheet identifying from the scanned test sheet at least one of the multiple void pantographs having an overt pantograph foreground and developing a workflow for the at least one of the multiple void pantographs having both i) the covert or semi-covert pantograph foreground and background after printing, and ii) the overt pantograph foreground after scanning.Дў. Method and apparatus for inhibiting the copying of checks and negotiable documentsДЎ. Negotiable document having enhanced security for deterring generation of copies of the negotiable document

Printed document and method of determining the print quality of a printed document Printing system, process, and product with a variable pantograph Security document manufacturing method and apparatus using halftone dots that contain microscopic images Printing system, process, and product with microprinting Tools to embed tampering indicator into digital visual worksДocument Containing Scanning Survivable Security Features Systems for spectral multiplexing of a source image and a background image to provide a composite image, for rendering the composite image, and for spectral demultiplexing of the composite images Techniques for Detecting, Analyzing, and Using Visible Authentication Patterns METHOD AND DEVICE FOR MAKING DOCUMENTS SECURE Image forming apparatus and method for controlling image forming apparatusД¬opy-forgery-inhibited pattern or stamp image combined with image data based on user actions Techniques for detecting, analyzing, and using visible authentication patterns

Image forming apparatus and image processing apparatus Method and system for transmitting data from a first data processing device to a second data processing deviceД¬opy-forgery-inhibited pattern image generation method and image processing apparatus Pantograph methods, apparatus and systems based on UCR/GCR

Single-color screen patterns for copy protectionДЄuthenticable anti-copy document and method to produce an authenticable anti-copy document with a combined void pantograph and faux watermark security features Void pantographs and methods for generating the same using at least one test void pantograph

Void pantograph creation steps