Minimum requirements for application of ink dating methods based. Hh pressure liquid chromatography (HPLC) was used to analyze several samples of ball pen ink. Jul 15, 2011. Several ink dating methods based on solvents analysis using gas chromatography/mass spectrometry GC/MS were proposed in the last.
Ink Dating Analysis and Ink Dating Expert Witness Speckin Analytical parameters were developed to analyze the various constituents of ball pen ink, both qualitatively and quantitatively. 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.
Ink Dating - Riley Welch In crimes of fraud, paper evidence can have hh evidentiary value. Ink dating is a hy specialized forensic examination and considered to be one of the most accurate and reliable methods to help determine the age of a.
Age determination of ballpoint pen ink by thermal For example, paper analysis may detect numerous types of counterfeit documents such as currency, food stamps, stock certificates, wills and various types of identification documents such as drivers licenses or social security cards. Two main approaches can be used for determining the age of an ink indirect dating and direct dating. Indirect dating is based on the chemical analysis of an ink.
The Forensic Examiner Preview Home page FAQ About Albert Lyter Video Densitometer Thin Layer Chromatography (TLC) Scanning Electron Microscope Fourier Transform Infrared Spectroscopy Atomic Force Microscopy X-ray Photoelectron Spectroscopy Publications The carbon copy document is one form of physical evidence that has not received much attention. Different ques have been used, based on the study of chemical and. The identification and dating of the fountain pen ink entries on documents by.
Global Forensics - Ink Dating, Art Dating, Questioned Documents Although the classical ques employed to differentiate typewritten documents are often adequate to differentiate carbon copies, the following work suggests an additional que. Ink Dating, Ink Age, Forensic Analysis Ink, Fraud, Forgery. There are typiy two different forensic methods for ink dating. The first method used is known as.
A Critical Evaluation of Current Ink Dating Line characteristics such as density, width and the presence of the anomalies, such as splitting and blobbing were noted and measured relative to writing angle and point load. Brunelle, R. and Cantu, A. "A Critical Evaluation of Current Ink Dating ques," Journal of Forensic Sciences, Vol. 32, No. 6, 1987, pp.
Patent US5600443 - Method of determining the age of ink having. Results suggest that the extreme variation which exists between writing instruments will prevent use of these ques to determine authorship. Feb 4, 1997. In this regard, time dating an ink is dependent upon the composition of the. One of the most common ques of falsifying documents and.