Method of forming copy resistant documents by forming an orderly array of fibers extending upward from a surface, coating the fibers and printing the coated fibers and the copy resistant document resulting from said method Patent #: 4025673
ApplicationNo. 06/171318 filed on 07/23/1980
US Classes:283/67, METHOD283/902, ANTI-PHOTOCOPY283/93, Having dot pattern283/94, Utilizing superposed layers355/133MISCELLANEOUS
ExaminersPrimary: Bell, Paul A.
Attorney, Agent or Firm
International ClassesB41M 3/14 (20060101)
G03C 5/08 (20060101)
G03G 21/04 (20060101)
G07D 7/00 (20060101)
G07D 7/20 (20060101)
AbstractDisclosed is a protected document such as a negotiable instrument, a title instrument, identification document or other documents which should be kept secure from illegal copying by color copiers. The method of making the document comprising preprinting a "void" or other warning or cancellation phrase pattern in half tone or multitone on the document and camouflaging this pattern is also disclosed.