ISSN: 0022-1198
CODEN: JFSCA
Published Online: 1 October 1977
Page Count: 8

Comparison of Typewriter Ribbon Inks by Thin-Layer Chromatography
Cantu, AA
Forensic chemists, Bureau of Alcohol, Tobacco and Firearms,

Lyter, AH
Forensic chemists, Bureau of Alcohol, Tobacco and Firearms,

Negri, JF
Research student, The George Washington University, Va

Brunelle, RL
Chief, Bureau of Alcohol, Tobacco and Fire-arms,

(Received 22 February 1977; accepted 14 March 1977)

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.

Keywords:

Paper ID: JFS10423J
DOI: 10.1520/JFS10423J
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