The efficiency of document examination for indented writing of papers

Abstract

This study aimed to know the oblique light effectiveness of the document examination in detecting indented writing on different types of papers and to study the properties of writing through the detected indented writing. The researchers used quantitative research in the study, and the experiments determined that the oblique light source used to determine its effectiveness came from the left and right sides, ten millimetres high from the sheet of paper, and the oblique light source at an angle of 10 degrees to the level line. The study used different papers as follows: 70 and 80 gsm copy paper and 70 gsm report paper. It also studied the influence of pen types used in writing through gel ink pens and ballpoint pens, which, according to studies, showed that oblique light inside the proof of document examination a maximum of 3 sheets of indented writing on parchment sheets. Ballpoint pens written in 70 gsm, 80 gsm, and report papers averaged 1.5, 1.2, and 1.2, respectively. The gel written in 70 gsm, 80 gsm paper and report paper in the ink pen averaged 1.0, 1.0, and 0.8, respectively. Although the average number of sheets of paper detected for indented writing was different, according to the analysis of two variances factored at a statistical significance of 0.05, different types of paper and pens did not affect the effectiveness of detecting pressure marks with a poof of document examination.