Counterfeit documents are usually produced by one or more of five printing methods: Letterpress (relief; typographic), printing from a raised surface; intaglio (gravure), printing from a depressed surface; offset lithography (planographic), printing from a plane or flat surface; office machine copier, copies made directly from genuine currency; and screen (formerly silk screen), printing through a porous material. The fastest growing method of producing counterfeit documents is by office machine copiers or computer and computer printer.
EXPECTED RESULTS
SFC may be able to provide possible sources for materials necessary to produce a particular counterfeit document; identify paper as to manufacturer and distributors; determine the method of production; and identify the office machine copier used in the production of counterfeit.
SUBMITTER'S RESPONSIBILITIES
Place the document in a protective envelope and avoid unnecessary folding or marking. Label the protective envelope prior to inserting the evidence to prevent further marks or indented writings. A request for this type of analysis must be done prior to any treatment for latent prints, since the chemical treatment for latent fingerprints often destroys evidence of the printing process.