Infrared Luminescence of Indented Writing as Evidence of Document Alteration

    Volume 42, Issue 4 (July 1997)

    ISSN: 0022-1198

    CODEN: JFSOAD

    Page Count: 4


    Gabbay, R
    Scientific officers, Questioned Documents Laboratory, Division of Identification and Forensic Science, Israel Police Headquarters, Jerusalem,

    Brown, S
    Scientific officers, Questioned Documents Laboratory, Division of Identification and Forensic Science, Israel Police Headquarters, Jerusalem,

    Sharf, S
    Scientific officers, Questioned Documents Laboratory, Division of Identification and Forensic Science, Israel Police Headquarters, Jerusalem,

    (Received 1 October 1996; accepted 11 November 1996)

    Abstract

    A case involving the suspected addition of a line to two sales slips of the same transaction was investigated. Using infrared luminescence, indented impressions on one document were found to originate from writing on the second copy, and vice versa. The source of the luminescence most probably originated from the paper which was found to have a coated back of leucodye microcapsules, as such that is found in carbonless copy paper. The context and locations of these indented impressions enabled one to determine the sequence in which the entries were written, and to prove that the questioned entries were added later.


    Paper ID: JFS14193J

    DOI: 10.1520/JFS14193J

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    Author
    Title Infrared Luminescence of Indented Writing as Evidence of Document Alteration
    Symposium , 0000-00-00
    Committee E30