Counterfeit protected document

作者: Ralph C. Wicker

DOI:

关键词: CounterfeitTRACE (psycholinguistics)EngineeringCopyingEngineering drawingSkewAlternative methods

摘要: A method and product, resulting from application of the method, for making images on a document that will not be replicated properly by electro-optical scanning copying devices. Documents cannot known machines or other replicating devices are produced according to invention as well alternative methods. All methods disclosed herein instructive art work such documents forming lines into various patterns in manner imitative intaglio gravure printing. The pitch lineations is deliberately selected so vary minutely trace photocopiers, video opticons, like. variation may obtained manufacturing with desired or, subsequent image placement therein, altering dimensions geometry effectively skew parameter.

参考文章(12)
Wicker Ralph C, Shaughnessy Walter R, Screen angle indicator ,(1960)
Rinaldo Castagnoli, Document of value ,(1984)
Thomas R. Corwin, William H. Mowry, Multi-tone cancellation phrase and background ,(1984)
Robert Gordon Hutton, Trevor Merry, Documents of value including intaglio printed transitory images ,(1975)
Emik A Avakian, Joseph J Malin, William P Hoeflinger, Cryptic grid scrambling and unscrambling method and apparatus ,(1957)