FIELD: document security.
SUBSTANCE: invention relates to the field of finance, more particularly to banknotes and methods for preventing counterfeiting. Proposed is security document (1) with front (11) and reverse sides, whose body (C) is at least partially composed of fibers, with protective strip (2) at least partially included in body (C), wherein body (C) is impregnated with a decolorizing agent at least in front of a portion of strip (2). Strip (2) is partially included in body (C) in such a way that it protrudes in several places on the surface of body (C) on front side (11), forming windows (F). Two consecutive windows (F) are separated by bridge (P) corresponding to the region in which strip (2) is immersed in body (C). Bleach impregnates body (C) also in zones (3) located on the edges of the longitudinal sides of strip (2), at least in front of the region forming bridge (P).
EFFECT: increased reliability of preventing counterfeits.
9 cl, 13 dwg
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