forensics.docx - Running head FORENSIC DOCUMENT EXAMINATION...

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Running head: FORENSIC DOCUMENT EXAMINATION 1 Forensic Document Examination Name Institution
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FORENSIC DOCUMENT EXAMINATION 2 Abstract Questioned documents are a common case in many legal proceedings. Forensic analysts are thus faced with a task of analysis the contents of the documents, nature of the materials used and the source. One of the primary tasks of forensic experts is to examine the individual characteristics of a document and match them with characteristics of a printer or photocopier. The printers and copiers always transfer their characteristics to the documents. The paper discusses the various characteristics of printers and copiers that make them readily identifiable. Such characteristics include; toner elements, grabber marks, graphic marks from specific printers and indentations.
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FORENSIC DOCUMENT EXAMINATION 3 Forensic Document Examination The modern world is experiencing more sophisticated criminal activities that use technology to hide the identity. One of the commonly used method in crime propagation is the use of typewritten documents. Printed documents are used for criminal purposes such as communication, threatening, or soliciting ransom. Investigators thus face a dilemma on how to track the suspects. However, locating the machine used in printing or photocopying the documents is critical in narrowing the search area. Several methods are used to identify the machine that printed a particular document. The machines are traced from the unique characteristics of their output. Some of the characteristics include; paper banding due to variations in speeds of toner cartridges, marks from feed system, graphic marks put by specific printers and identification of indentations using Electrostatic Detection Device (EDD). According to Chiang et al. (2004) printer prices have enormously dropped, and almost everyone can afford one. However, the manufacturers of these printing machines lower the quality of the machines to reduce costs of production. Changes are visible in aspects such as plastics gears that move the toner cartridge.
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