Non-destructive Ink Examination

Uncover Document Details and Authenticity Through Expert Ink Analysis.

What is Non-destructive Ink Examination?

Non-destructive ink examination refers to a set of techniques used to analyse the ink on a document or object without causing any harm or alteration to the original material. This is particularly important in forensic document analysis, where preserving the integrity of the object is crucial. The goal of non-destructive ink examination is to gather information about the ink’s composition, detect alterations, and identify the presence of different inks, all without causing any physical damage to the document. A key tool for non-destructive ink examination, the Video Spectral Comparator allows document examiners to view documents under various wavelengths of light, such as ultraviolet (UV), visible, and infrared (IR) light.

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Unmatched Forensic Expertise

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How the Process Works

  • The document is placed under the VSC, and different light sources are used to highlight various characteristics of the ink.
  • UV lightcan reveal invisible ink, hidden writing, or faded text.
  • IR lightcan uncover overwriting, erasures, or alterations that are invisible under normal lighting.
  • Visible lightprovides a typical image of the document, but it can be enhanced to detect subtle differences in ink composition.
  • By analysing the document under different light spectrums, the VSC helps identify the type of ink used, spot potential forgeries, and distinguish between original and modified text.

Benefits of Non-Destructive Ink Examination:

  • Preservation of the Original Document: Since no physical alteration is made to the document, its integrity is preserved.
  • Detection of Alterations or Forgeries: Non-destructive methods can reveal whether the document has been tampered with, such as overwriting, erasures, or the use of different inks.
  • Authentication: These techniques help authenticate documents by identifying ink types, confirming the date of writing, and detecting any suspicious discrepancies.
  • Application in Legal and Forensic Fields: Non-destructive ink analysis is critical in the forensic examination of contracts, cheques, historical records, and other legal documents where authenticity is essential.

General Questions

What is non-destructive ink examination in forensic document analysis?

Non-destructive ink examination is a forensic technique used to analyse ink on documents to detect alterations, forgeries, or to determine the origin or age of the ink, without causing any damage to the document.

By identifying different types of ink or inconsistencies in ink, experts can determine if a document has been altered or if parts of it were written at different times, all without damaging the document.

Forensic experts may use tools like infrared (IR) or ultraviolet (UV) light, infrared spectroscopy, and chemical analysis to examine ink, all while maintaining the document’s integrity.

Acreditations

Logo of the European Network of Forensic Science Institutes (ENFSI), featuring a map of Europe and the organisation's name in red and blue, representing collaboration in forensic science across Europe.