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  • P-ISSN1225-0163
  • E-ISSN2288-8985
  • SCOPUS, ESCI, KCI

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  • P-ISSN 1225-0163
  • E-ISSN 2288-8985

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    17권 3호
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    The Classification and Age Determination of Ballpoint Pen Inks in Questioned Documents

    분석과학 / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
    2004, v.17 no.3, pp.271-277
    김남이 (국립과학수사연구소)
    박성우 (국립과학수사연구소)
    Philip Doble (시드니산업대학교)
    Claude Roux (시드니산업대학교)
    김남이, 박성우, Philip, D. , & Claude, R. (2004). . 분석과학, 17(3), 271-277.
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    Abstract

    The aim of this study was to investigate questioned documents written with blue or black ballpoint pen on paper by nondestructive technique. In this work, 21 blue and 22 black ballpoint pen inks which were purchased on different brands were analyzed by using Microspectrophotometry (MSP). The reflectance spectra were obtained from these ink samples and their shapes and the wavelength of the maximum intensity were compared. In the blue and black ballpoint pen inks, the discriminating powers (DP) were 0.85 and 0.61, respectively. The changes of the reflectance intensity at their wavelength of maximum intensity and their shapes appeared according to the exposure time to sunshine in a laboratory, especially in the blue ballpoint pen inks. Therefore it is possible to distinguish ink entries on the same paper with the relative age in case of questioned letters written with blue ballpoint pen.

    keywords
    Forensic science, Document examination, inks, ageing, MSP


    참고문헌

    1

    (1981) UV spectrom- etry group bulletin,

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