Copy indicator for a document

Details Copy indicator for a document Copy indicator for a document

B - Operations, Transporting

42

D

283/24

B42D 15/00 (2006.01) B41M 3/14 (2006.01) G03G 21/04 (2006.01)

Patent

CA 2000812

Abstract of the Disclosure A printed background pattern for a document is described, wherein the pattern masks a copy indicator which is revealed upon making a copy of the pattern using a digital optical scanning means. The background pattern comprises an area of microprinting with a type size having a line resolution of about 20% to about 80% of the resolving power of the scanning means. Preferably, the type size is less than 100 µm. An area of solid line printing is provided within the microprinting which defines the copy indicator. The solid lines have a visual value approximating that of the microprinting so as to be masked therein, and the solid lines are capable of resolution by the digital scanning means.

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