Volume 22, Issue 4 (October 1977)

    Comparison of Typewriter Ribbon Inks by Thin-Layer Chromatography

    (Received 22 February 1977; accepted 14 March 1977)

    Published Online: October

    CODEN: JFSOAD

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    Abstract

    Examiners of questioned or disputed documents are frequently asked to ascertain whether or not the text of a typewritten document has been altered by the use of either a different typewriter or the same typewriter at a later date. Any technique that can distinguish among the various commercially available typewriter ribbon inks is a potentially valuable tool to the examiner of questioned documents.


    Author Information:

    Cantu, AA
    Forensic chemists, Bureau of Alcohol, Tobacco and Firearms, Washington, D.C.,

    Lyter, AH
    Forensic chemists, Bureau of Alcohol, Tobacco and Firearms, Washington, D.C.,

    Negri, JF
    Research student, The George Washington University, Washington, D.C., Va

    Brunelle, RL
    Chief, Bureau of Alcohol, Tobacco and Fire-arms, Washington,D.C.,


    Stock #: JFS10423J

    ISSN: 0022-1198

    DOI: 10.1520/JFS10423J

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    Author
    Title Comparison of Typewriter Ribbon Inks by Thin-Layer Chromatography
    Symposium , 0000-00-00
    Committee E30