METHOD FOR IDENTIFYING AND PROTECTING EXCISE LABELS, BANK NOTES, SECURITIES, DOCUMENTS, AND ARTICLES; CRYPTIC IMAGE MEDIUM AS IDENTIFYING AND PROTECTIVE MARK

摘要

FIELD: protection of various documents and articles against forgery. SUBSTANCE: method involves production and development of cryptic image that functions as identifying and protective mark. Identification medium has protective coating of anti-Stokes luminescent compound or includes anti-Stokes luminescent coating in the form of crystalline structure whose lattice incorporates atoms of several rare-earth metals at a time. EFFECT: improved reliability of forgery protection; improved image chemical stability; facilitated procedure. 9 cl