METHOD OF RENDERING DOCUMENTS RESISTANT TO PHOTOCOPYING AND ANTI-PHOTOCOPYING PAPER THEREFOR

摘要

A document has information appearing thereon, with at least a portion of the information being located on a front face of a portion of the document. The front face portion has a colour with a sufficiently low reflection spectral response to render the document portion substantially incapable of being photocopied in an informationreadable manner. The document portion is capable of transmitting visible light from the rear face to the front face to cause sufficient contrast between the relatively nontranslucent information and the transmitted light to enable the information to be read by a human eye viewing the front face of the document when visible light is transmitted through the document from the rear face to the front face.