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Other ink entries are not necessary for comparison. Aginsky has developed the SET as a result of many years of research of the ink aging methodology developed and published by Dr. For example, if the questioned document’s date precedes the manufacturing date for the ink used to sign the document, it is established that the document could not have been signed on the date it bears. Such intra-comparisons of inks may reveal that the questioned entries were not written contemporaneously with the other entries in the file (document). – The examination’s purpose is to assess whether the use of various inks on the document(s) fits a pattern that is either consistent with the dates appearing on the document(s) or indicates preparation "at one time" (during a short period of time). Paper folds – It is often possible to determine whether an ink line that intersects a paper fold was written before or after the paper was folded.Offset marks – When two pieces of paper are pressed together, marks such as writing (and printing) may be transferred from one to another.For example, if transfers of ink are found on several pages of a diary, it indicates that the corresponding entries on the diary were made in a single sitting, not over a longer period as suggested by the dates.Ink and Toner Intersections – When a signature (or a handwritten notation) intersects a printed text on a document, a forensic document examiner may be asked which came first, the text or the signature (handwritten notation).Other techniques can determine the approximate date of preparation of handwritten entries.

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Such transfers will occur only when inks are freshly applied.

The answer to that question may determine whether the document has been altered (by adding certain information).

It should be noted that sequence of execution may be determined even when lines of the text and signature (handwritten notation) do not intersect. * At present, the ink aging methods that analyze ink dye components are considered unreliable by the overwhelming majority of ink dating specialists and forensic document examiners.

An ink formulation can be identified to a specific manufacturer to ascertain the first date of commercial availability. He trained with and served as the Chief Research Forensic Chemist with the United States Secret Service and was responsible for maintaining the largest known forensic collection of writing inks in the world.

If an entry is dated in 1995, but the ink was not available until 2005 then the document could not have been created in 1995.

We can determine the first date of commercial availability of the ink used to prepare any handwritten or handprinted material.