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Sequencing of indented impressions and writings — Examining intersections areas where the visible ink lines cross the indentations may determine the order of writing and thus prove that a particular entry was added at a later time.
All of the entries that did concern the alleged harassment had been contaminated with a yellow highlighter so that a relative ink age determination discussed in the next chapter could not be performed. The ink showed the presence of a date tag and the tag was determined to have been inserted in inks only manufactured during the calendar year Based on this evidence it was concluded that the entries were not written at many different times throughout the years, as purported by the author; but instead at all the same time or near the same time.
Each document was produced at different moments using a different ink stroke pressure, factors that may alter the results and lead to dating errors. Ink Aging Approach Various methods have been published to measure aging processes that occur in ink on documents.
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The unquestioned entries were examined first. Proven specialty areas to include questioned documentsforensic document examinationforensic ink datingforensic document datingArt Datingcounterfeit documentscrime scene evaluationink analysisink age determinationpaper analysisauthenticityfraud investigationsproduct piracyfingerprintshandwritingtrace evidenceDaubert and cold case consultant investigations.
For example in a case of three dyes, 1 would be divided by 2, 1 divided by three, and two divided by three.
The size of the reference library of the laboratory conducting the examination is also highly important in the chances of success and also in determining the significance of a match.
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The ink on this receipt was examined using TLC testing and specifically for the detection of a chemical date tag. The diary entries also contained no chemical date tag, as did the ink of the ink dating expert. It only takes seconds to get started. Obviously, no library can ever be complete and no exact measure of completeness can be accurately stated, since the number of unknown and unseen inks dating expert cannot be stated.
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Stewart was born in Asheville, North Carolina. If more analysis is done or some unique component is present, then less of a qualification is necessary. University of the Basque Country. For this reason this type of tag is commonly referred to as a florescent date tag.
District of Columbia and Maryland. There were many entries throughout four books some involving these allegations and many that did not.
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Other pages discuss the use of infrared to discriminate the differences between inks that visually and microscopically look identical. ScienceDaily, 10 November From Around the Web.
If an ink being inked dating expert contains this newer formulation with the additional blue band it could not have been written until in or after You are here Home. The expert they located provided the insight and testimony we needed at a critical juncture in our case. 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.
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