Ink dating analysis

Inspired by a real investigation involving ink dating, the present paper discusses this particular issue throughout four main topics: aging processes, dating methods, validation procedures and data interpretation.

Many organisations around the world rely on the use of official rubber stamp impressions to authenticate their documents.

Therefore, it is important to remember that all non-invasive forensic examinations and comparisons must be completed prior to invasive examinations in order to avoid loss of potential evidence.

A surgeon was defending a medical malpractice suit and produced three pages of patient medical records in support of his case that he had cautioned the plaintiff patient as to the risks associated with a proposed medical procedure.

However, several questions arose over the last few years among questioned documents examiners regarding the transparency and reproducibility of the proposed techniques.

These questions should be carefully studied for accurate and ethical application of this methodology in casework.


  1. Feb 10, 2015. With static ink dating, analysts can determine when an ink was first made available to the public, says Julia Barker, ink library document analyst. This is the most common type of investigative request the library receives. It takes requests not only from the Secret Service but also law enforcement agencies.

  2. Characterizing features with which to identify or date inks 25. Nevertheless, they have disadvantages. X-ray fluorescence is limited to elemental analysis. Some methods, like FT-IR spectroscopy, suffer from overlap of features from various ink and possibly paper components and so do not provide enough characteristic.

  3. Nov 30, 2017. The 'dating' of inks is a hugely complex area and depends to a large extent on the conditions used to store the document that bears the ink. Many factors affect the apparent ageing of ink including exposure to light, heat, humidity and thickness of ink line. For these reasons a direct dating of ink lines is.

  4. Ink analysis. Forensic ink analysis is very clearly connected with document examination. The analysis starts with predicting the type of device used to produce the document pens. followed by physical and chemical analysis of inks. R. L. Brunelle, K. R. Crawford, Advances in the forensic analysis and dating of writing ink.

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