The studies of developing latent fingerprint in general print papers by chemical reaction

화학반응을 이용한 일반 프린트용지의 잠재지문 현출에 관한 연구

  • Roh, Seung-Chan (Dept. of Scientific Criminal Investigation, Chungnam National University) ;
  • Choi, Mi-Jung (Dept. of Scientific Criminal Investigation, Chungnam National University) ;
  • Kim, Man-Ki (Dept. of Scientific Criminal Investigation, Chungnam National University) ;
  • Lee, Oho-Taick (Physics and Chemistry Div., Laboratory of Scientific Investigation, Ministry of National Defense) ;
  • Park, Sung-Woo (Dept. of Scientific Criminal Investigation, Chungnam National University)
  • 노승찬 (충남대학교 과학수사학과) ;
  • 최미정 (충남대학교 과학수사학과) ;
  • 김만기 (충남대학교 과학수사학과) ;
  • 이오택 (국방조사본부 과학수사연구소) ;
  • 박성우 (충남대학교 과학수사학과)
  • Received : 2007.02.16
  • Accepted : 2007.04.09
  • Published : 2007.04.28

Abstract

Porosity paper evidence is encountered in case of forgery, kidnapping, fraud and terrorist activity. The present study was designed to evaluate the effect of three chemical reagents (Ninhydrin, 1,8-diazafluoren-9-one (DFO), Iodine fuming) to the quality of developed latent fingerprints on porosity printing papers and newspaper. In case of printing papers, print quality was better with Iodine fuming method than Ninhydrin and DFO treatment to developing latent fingerprints. Developing latent fingerprint on newspapers was achieved with Iodine fuming processing. The processing of Iodine fuming followed by DFO and by using blue light (orange red filter) exhibited better results with Iodine fuming. Enhancement of latent fingerprint detection image using Digital Imaging System was achieved.

Keywords

latent fingerprint;general print paper;newspapers;Ninhydrin;DFO;Iodine fuming

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