Uses a toner that is deposited preferentially in the indented writings so that they can be visualized.
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2
Laser Desorption Mass Spectrometry
Can be used to track an ink dye as it ages.
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3
Obliteration
Overwriting of a sample of writing or printing with another writing instrument.
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4
Thin-Layer Chromatography
Most popular and one of the easiest methods of ink analysis and comparison.
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5
Informal signatures
________- used in routine correspondence such as personal letters etc.
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6
Chemical Erasures
Involve dissolving or bleaching ink so that it is no longer visible.
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7
Requested writings
Samples taken from someone for the purpose of comparison with a questioned document
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8
Signatures
A single signature may be the sole handwriting on the entire questioned document, giving rise to problems that the sample may be insufficient for a definite conclusion
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9
Formal signatures
Used on official documents such as will or deeds
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10
Informal signatures
Used in routine correspondence such as personal letters etc
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11
Stylistic signatures
Would be used in signing checks, credit card receipts, etc
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12
Forged signatures
Traced signatures; some forgers practice copying the authentic signatures
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13
Obliteration
Overwriting of a sample of writing or printing with another writing instrument
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14
Abrasive Erasures
Involves removing writing with an abrasive eraser material
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15
Charred Documents
Very fragile documents because they have almost been destroyed
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16
Sampling
Accomplished by using a blunt-point syringe needle that takes tiny plugs from individual letters in the writing
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17
Thin-Layer Chromatography
Most popular and one of the easiest methods of ink analysis and comparison
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18
Infrared Spectrophotometry
Shows absorption peaks for all the components of the ink at one time, including the solvent, dyes, and additives
Studied by 2 people
