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Striation Patterns in New and Used Ballpoint Pens
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This study examined the incidence and individuality of striations in strokes produced by ballpoint pens. Ink strokes produced by various ballpoint pens were examined microscopically. Striation patterns produced by high-end (> $10.00) versus low-end pens (< $10.00) were also considered. Differences in the incidence of such ballpoint pen striations were assessed from samples of new pens versus samples of used pens. Photomicrographs illustrate the types of ballpoint pen striations observed.
American Society of Questioned Document Examiners
Title: Striation Patterns in New and Used Ballpoint Pens
Description:
This study examined the incidence and individuality of striations in strokes produced by ballpoint pens.
Ink strokes produced by various ballpoint pens were examined microscopically.
Striation patterns produced by high-end (> $10.
00) versus low-end pens (< $10.
00) were also considered.
Differences in the incidence of such ballpoint pen striations were assessed from samples of new pens versus samples of used pens.
Photomicrographs illustrate the types of ballpoint pen striations observed.
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