METHOD FOR DETERMINING PRESCRIPTION OF DOCUMENT COMPILATION BY WRITTEN MATERIALS Russian patent published in 2016 - IPC G01N33/32 

FIELD: documents.

SUBSTANCE: invention relates to documents expert evaluation and represents method for determining prescription of document compilation, consists in fact, that performing strokes fragments copying onto PVC film, wherein reagents used are camphor spirit and dimethyl formamide (DMF), determining X, Y and Z times for the analyzed object and for strokes samples fragments for tested and further periods of time, where X is contact time, during which there is no copying on camphor spirit, Y is time of copying on DMF, when copied fragments have average painting factor, and Z is time of copying on DMF, when copied fragments have intensive painting factor; in case of values X, Y and Z for strokes in analyzed document coincidence with values of X, Y and Z for samples over tested period of time, provided that samples copying time for further period of time is reducing, making conclusion on, that strokes making time in analyzed document will correspond to tested period of time.

EFFECT: technical result consists in improvement of accuracy (up to 1 month) and expansion of application range by objects "age".

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