10. A method for enhancing security of a negotiable document and deterring copying of the negotiable document, comprising the steps of: generating a first warning mark on a negotiable document backing, said first warning mark comprised of a first dot size pattern reproducible by various copier systems; generating a second warning mark on the negotiable document backing, said second warning mark comprised of a second dot size pattern reproducible by various copy systems; and generating a background pattern around the first and second warning marks, said backing pattern comprised of a third dot size pattern reproducible by various copy systems.
10. A method for enhancing security of a negotiable document and deterring copying of the negotiable document, comprising the steps of: generating a first warning mark on a negotiable document backing, said first warning mark comprised of a first dot size pattern reproducible by various copier systems; generating a second warning mark on the negotiable document backing, said second warning mark comprised of a second dot size pattern reproducible by various copy systems; and generating a background pattern around the first and second warning marks, said backing pattern comprised of a third dot size pattern reproducible by various copy systems. 11. The method of claim 10 further including the steps of: printing a first pantographic background design within a signature area on a first side of a negotiable document; printing a second pantographic background design substantially covering a first side of the negotiable document and differing from the first pantographic background design; and generating a warning clause describing the pantographic background design of the signature area.