Ink dating uk
Our examiners use an instrument known as a VSC 2000HR to carry out non-destructive specialised lighting examinations.
Inks may also be distinguished by other more complex chemical tests but these are likely to be destructive to some extent.
When the writing on the reverse side of a sheet of paper in a bound ledger intersects with the writing on the front side of the sheet of paper, ink may be transferred from the front page onto an underlying page.
A classic example is where a zero is added to a cheque making the value ten times as much.The ink dating static approach is typically more useful as the difference between the date on the document and the present time increases.Several different tests exist in this form of ink dating.These ink dating methods include the comparison of the examined ink to a known library of standards, commonly called the library approach, the detection of chemical date tags placed in the ink purposefully by the manufacturer, commonly called the date tag method, and also the determination of the type of ink writing instrument used.The determination of the type of writing instrument is probably the oldest method of ink dating.
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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.