Journal Published Online: 01 September 2000
Volume 45, Issue 5

A Study on the Use of Photopolymer Reflex Plate in the Forgery of Chinese Seals



This study compares the identifying characteristics between the impressions made with original Chinese seals and photopolymer replicate seals, and between the impressions made with two photopolymer replicate seals that originate from one single negative. Various seal materials common to the Chinese community such as cow's horns and ivory are employed. Other than the common factors such as different incident angle upon imprinting or different degree of inking that constitute the natural variation in impressions, the physical changes of the seal materials with temperature will be considered. This study concludes that photopolymer replicate seal impressions can be differentiated from the originals in respect to print density and stroke morphology, but it is very difficult to differentiate between two photopolymer replicate seal impressions with the same origin. This study also proposes a simple method for the examination of forged Chinese seal impressions.

Author Information

Cheng, KC
Forensic Science Laboratory, Ministry of Justice Investigation Bureau, Taipei, Taiwan, Republic of China
Cheng, N
Institute of Science and Forensic Medicine, Singapore
Wei, YC
Institute of Graphic Arts, Chinese Culture University, Taipei, Taiwan, Republic of China
Pages: 9
Price: $25.00
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Stock #: JFS14830J
ISSN: 0022-1198
DOI: 10.1520/JFS14830J