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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.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.There are four major approaches (each approach is a group of methods) used for dating inks on documents: 1.Ink Aging Approach Various methods have been published to measure aging processes that occur in ink on documents. Aginsky is the author of two ink aging methods that analyze ink volatile components (not ink dye components*) and that have been tested and applied to actual cases by multiple forensic laboratories.
In 2002, a scrap of map parchment was analyzed by a destructive, organic method (radiocarbon dating).
This specialized investigative process extracts historical and physical evidence from documents, photographs, art prints, books, and other paper-based objects.
Investigators have a number of analytical tools at their disposal, ranging from standard optical magnification, to exquisitely sophisticated molecular spectroscopy.
The determination of the type of writing instrument is probably the oldest method of ink dating.
This ink dating method primarily involves microscopic examinations and can also incorporate some basic chemical solubility testing.