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

摘要

ABSTRACT OF THE DISCLOSUREA document has information appearing thereon, withat least a portion of the information being located on afront face of a portion of the document. The front faceportion has a colour with a sufficiently low reflectionspectral response to render the document portion substan-tially incapable of being photocopied in an information-readable manner. The document portion is capable of trans-mitting visible light from the rear face to the front faceto cause sufficient contrast between the relatively non-translucent information and the transmitted light to enablethe information to be read by a human eye viewing the frontface of the document when visible light is transmittedthrough the document from the rear face to the front face.