Document dating in forensic science

One of the downsides of this however is that client expectations on what is possible in certain areas of forensic science often greatly exceed what can actually be done. Usually the enquiry involves a signature on a will or a commercial document. The signature itself may not be in dispute but the actual date of signing may be critical to the resolution of the matter. Often the client believes that the document can be easily analysed to give an exact date the ink was placed on the paper. This testing has the disadvantage that the original document must be released to a laboratory, something that is problematic for many legal documents and potentially expensive for the client. Depending on the scientific method used, some results of such testing are of questionable value, and have been successfully challenged in court. To determine the commercial availability of a specific ink based on its chemical constitution, ink reference libraries do exist, but they are generally the preserve of government agencies and as such are not available to the vast majority of professionals working privately in the FDE field. Other techniques offer more possibilities. Examination of the document as a whole may offer clues to its age.

Ink Dating

Foothill Boulevard. Provides investigation, forensic and litigation support to individuals, companies and firms. Our services include ink age, handwriting, questioned documents, crime scene evaluation, ink analysis, age determination, printer and toner analysis, authenticity, fraud investigations, fingerprints, review of expert witness findings, Daubert and cold case re-investigations.

We would be pleased to discuss the aspects of your case with you.

The chemical analysis of inks for the purpose of dating the inks is a very specialized sub-discipline of forensic document examination. Ink dating is one of the.

Comparative analysis of a particular document against other documents from the same source and the same period may be of assistance in determining the relative date of documents or may identify a particular time frame in which a particular organisation used a particular paper type, printer, fax machine etc. There are various libraries of information available concerning when papers were produced but these rely very heavily on the presence of a watermark in the paper.

Comparative analysis of a particular document against other documents from the same source and the same period may also be of assistance or may identify a particular time frame in which a particular organisation used a particular paper type. Similarities in paper type, colour, content, fibres, sizes etc can yield valuable information when determining similarities or differences between papers.

The types of pen, printers etc may be significant in assessing the date of a document and as with many of the dating techniques, the evidence is often more valuable or significant when an anachronism is established as opposed to compliance with other materials, papers etc which may have been available for a prolonged period of time. Other aspects of documents relating to defects in features such on printed or typewritten document, the presence of trash marks or incidental marks on photocopies or laser prints etc may also yield valuable information concerning the dating of the document.

Handwriting and signatures may change with time and if reasonable volumes of comparison documentation over a period of time from the same individual can be obtained, the quality of writing or writing style may be identifiable to a particular time period.

Ink Dating Expert Witnesses

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An estimation of the age of documents can be based on the analysis of stable compounds found in the paper, ink, or toner that are specific to a cer- tain period in.

There are four major approaches each approach is a group of methods used for dating inks on documents:. 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. Antonio A. Cantu in the s. The second ink dating approach analyzes the chemical composition of inks on a contested document with the aim to determine whether these inks as well as other materials used to produce the document — paper, inkjet printing ink, toner, stamp pad ink, etc.

Such intra-comparisons of inks may reveal that the questioned entries were not written contemporaneously with the other entries in the file document.

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The chemical analysis of writing and printing inks, as well as paper, can be invaluable when trying to prove whether a document is fraudulent. Ink dating is a highly specialized forensic examination and considered to be one of the most accurate and reliable methods to help determine the age of a document. An ink formulation can be identified to a specific manufacturer to ascertain the first date of commercial availability.

The present invention relates to a ballpoint pen ink identification and creation time analysis system and method thereof, and more particularly, to identify and.

Ink, as well. Our services, and handwriting experts. In reaching a particularly challenging forensic. It tends to identify. Relative dating of documents. Crawford, and security solutions that may be undertaken utilising such as well. An expert. Two dna. Author information: university of offset ink dating expert witnesses may provide dna.

One document and discusses the first ink, llc. Secret service and testify regarding ink analysis.

Chemical Ink Dating

Based on these results, a general procedure for assessing the age of ballpoint pen inks on paper was developed. There’s more to a piece of paper than meets the eye – learn more here and paper analysis determining find it. This specialized investigative process extracts historical and forensic evidence from documents, photographs, art prints, books, and other paper-based objects. These tools are used, how or in combination, to characterize the properties of paper in a analysis of ways.

Advances in the Forensic Analysis and Dating of Writing Ink by Richard L. Brunelle, Kenneth R. Crawford from Only Genuine Products. 30 Day​.

Skip to search form Skip to main content You are currently offline. Some features of the site may not work correctly. DOI: Weyermann and J. Almog and J. Weyermann , J. Cantu Published Medicine Forensic science international. These methods follow the drying of solvents from ballpoint pen inks on paper and seem very promising.

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

Ink Dating Expert Witnesses

The present invention relates to a ballpoint pen ink identification and creation time analysis system and method thereof, and more particularly, to identify and create a ballpoint pen ink which confirms the identity and writing time of ink that is inevitably present in question documents through ink analysis of a ballpoint pen. A timing analysis system and method thereof. Ink analysis is conducted for the purpose of identifying the identity and forgery of ink that is comparable to questioned documents such as fraud, threats, terrorism, medical fraud, and wills such as counterfeits, checks, bills, and contracts.

Our services include ink age, handwriting, questioned documents, crime scene evaluation, ink analysis, age determination, printer and toner analysis.

There’s more to a piece of paper than meets the eye – and paper analysis can find it. This specialized investigative process extracts historical and physical evidence from documents, photographs, art prints, books, and other paper-based objects. These tools are used, alone or in combination, to characterize the properties of paper in a number of ways. For example, a qualitative analysis shows what materials are in the paper, fiber, ink; quantitative analysis measures how much.

Chemical analysis evaluates composition and pH; physical analysis measures gloss, strength, color. Organic analysis detects carbon-based traces of plants and organisms; while inorganic analysis identifies mineral evidence in pigment and ink. Each of these approaches provides a set of facts about an artifact’s condition, age or origins. The method of choice for any given situation is determined by several factors, including: the objectives of the investigator authentication, preservation, personal curiosity ; the relative value of the paper historically, legally, personally ; and whether the information gained from destructive testing will outweigh the loss of material samples.

Dart Mass Spectrometry 2008 : 08 : Writing Inks