Journal Published Online: 01 October 1977
Volume 22, Issue 4

Comparison of Typewriter Ribbon Inks by Thin-Layer Chromatography

CODEN: JFSCAS

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

Brunelle, RL
Bureau of Alcohol, Tobacco and Fire-arms, Washington,D.C.
Negri, JF
U.S. Army Criminal Investigation Command, Ft. Belvoir, Va
Cantu, AA
Bureau of Alcohol, Tobacco and Firearms, Washington, D.C.
Lyter, AH
Bureau of Alcohol, Tobacco and Firearms, Washington, D.C.
Pages: 8
Price: $25.00
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Stock #: JFS10423J
ISSN: 0022-1198
DOI: 10.1520/JFS10423J