签字笔与圆珠笔笔痕特征的比较研究

目的 探讨签字笔笔痕是否天然地适用圆珠笔笔痕检验条件而能够进行同一认定.方法 运用比较分析方法,在不同纸张条件下,以签字笔和圆珠笔为研究对象,收集288份有效实验样本,分别观察、记录、分析实验样本中的所产生的笔痕特征.结果 签字笔笔痕主要出现在大笔画的划痕特征；签字笔笔痕的稳定性和特定性要比圆珠笔弱.结论 签字笔笔痕同一认定需要考虑签字笔本身的特性,不可盲目鉴定.

A Comparative Research on the Stroke Marks of Gel Pen and Ballpoint Pen

Objective To investigate whether the stroke mark examination method of ballpoint pens could be naturally applied to that of gel pens for the identification of gel pens in questioned document examination. Method 288 valid handwriting samples written by gel pens or ballpoint pens on different papers were collected for the observation, record and analysis of stroke marks features. Results Stroke marks of gel pens mainly present the scratch characteristics in main strokes. But in general, stroke marks of gel pens are less stable and specific than that of ballpoint pens. Conclusion The identification of gel pens by stroke marks should consider the characteristics of gel pens, and need more cautiousness.