Determination of Relative Age of Inkjet and Laser Printouts by CIE L*a*b* Color Space

Dr. Kapil Kumar, Dr. Shobhana Menon


Questioned documents are sometimes made to look old in order to make them appear genuine and age of a document should be promptly investigated in every possible manner. In this paper, a reliable, simple and effective method for determination of relative age of inkjet and laser printouts, kept in three different environmental conditions over a period of month time is reported. For this, their chromaticity values obtained from the absorbance and UV fluorescence spectra and the change in colour difference denoted as ?E*ab gave a significant correlation coefficient over time. The data obtained also illustrates possible chronological aging of printed text and ultimately explaining drying process. This enabled not only to analyse the studied material in a non-destructive manner but also to study the breakdown of colour and pigment present in toner/ink under different environmental conditions and in this way increases the possibility to distinguish them on account of time of printing.


Forensic Science; Questioned Document; age of document; printers.

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Hilton, O. (1992). Scientific examination of questioned documents. CRC press.

C. Dazzi, L. Pedrabissi, Graphology and personality: an empirical study on validity of handwriting analysis, Psychol Rep. 105 (2009) 1255-68.

G. M. Laporte, The use of an electrostatic detection device to identify individual and class characteristics on documents produced by printers and copiers--a preliminary study, J. Forensic Sci. 49 (2004) 610-9.

J. S. Tchan, Forensic Examination of Laser Printers and Photocopiers Using Digital Image Analysis to Assess Print Characteristics, J. Imaging Sci. Technol. 51 (2007) 299-320.

Vanessa K. Hughes Neil E. I. Langlois Use of reflectance spectrophotometry and colorimetry in a general linear model for the determination of the age of bruises Forensic Sci Med Pathol (2010) 6:275281.

Mat ?ias Calcerrada, Carmen Garc ?ia-Ruiz, Review on the analysis of questioned documents, Analytica Chimica Acta

Lyter,A.,McKeown,P.,A study of time-of-flights secondary ion mass spectrometry (TOF-SIMS) as a tool for the dating of writing ink, Annual Meeting of the American Academy of Forensic Sciences, Seattle, WA, 2001, p. 297.

D. Grim, J. Siegel, J. Allison, Evaluation of desorption/ionization mass spectrometric methods in the forensic applications of the analysis of inks on paper, Journal of Forensic Sciences 46 (6) (2001) 12651273.

Grim, D., Allison, J., Siegel, J., Determining the age of ink on a questioned document using laser desorption/ionization mass spectrometry, Annual Meeting of the American Academy of Forensic Sciences, Seattle, WA, 2001, p. 297.

Andrasko, HPLC analysis of ballpoint pen inks stored at different light conditions, Journal of Forensic Sciences 46 (1) (2001) 2130.

J. Andrasko, Changes in composition of ballpoint pen inks on aging in darkness, Journal of Forensic Sciences 47 (2) (2002) 324327.

C. Montes a, I.M. Vicario a, M. Raymundo b, R. Fett b, F.J. Heredia a,* Application of tristimulus colorimetry to optimize the extraction of anthocyanins from Jaboticaba (Myricia Jaboticaba Berg.) Food Research International 38 (2005) 983988.

Michelle R. Vaughn , Roland A.H. van Oorschot, Swati Baindur-Hudson A comparison of hair color measurement by digital image analysis with reflective spectrophotometry Forensic Science International 183 (2009) 97101.

Mikkilineni AK, Khanna N, Delp EJ: Forensic printer detection using intrinsic signatures. In Proceedings of SPIE-IS and T Electronic Imaging - Media Watermarking, Security, and Forensics III. San Francisco, CA, USA; 2426 Jan 2011:78800-11.

Mikkilineni AK, Chiang PJ, Ali G, Chiu GTC, Allebach P, Delp EJ: Printer identification based on graylevel co-occurrence feature for security and forensics application. In Proceedings of the SPIE - The International Society for Optical Engineering. San Jose, CA, USA; 21 Mar 2005:430-440.

Chiang PJ, Khanna N, Mikkilineni AK, Segovia MVO, Suh S, Allebach JP, Chiu GTC, Delp JE: Printer and scanner forensics. IEEE Signal Process. Mag 2009, 26: 72-83.

Ali GN, Mikkilineni AK, Chiang JP, Allebach GT, Delp EJ: Intrinsic and extrinsic signatures for information hiding and secure printing with electrophotographic devices. In International Conference on Digital Printing Technologies. New Orleans, LA, USA; 28 Sept3 Oct 2003:511-515.

Wu YB, Kong XW, Guo YP: Printer forensics based on page documents geometric distortion. In Proceedings of the 2009 16th IEEE International Conference on Image Processing (ICIP 2009). Cairo, Egypt; 712 Nov 2010:2909-2912.

Bulan O, Mao J, Sharma G: Geometric distortion signatures for printer identification. In ICASSP 2009 - 2009 IEEE International Conference on Acoustics, Speech and Signal Processing. Taipei, Taiwan; 1924 Apr 2009:1401-1404.

Cui L: Document inspection forged by photocopying. J. Chinese Peoples Public Secur. Univ. (Science and Technology) 2008, 3: 22-24.

Beusekom JV, Shafait F, Breuel TM: Document inspection using text-line alignment. In ACM International Conference Proceeding Series. Boston, MA, USA; 911 Jun 2010:263-270.

Beusekom JV, Shafait F: Distortion measurement for sutomatic document verification. In Proceedings of the 2011 11th International Conference on Document Analysis and Recognition (ICDAR 2011). Bejing, China; 1821 Sept 2011:289-293.

Kee E, Farid H: Printer profiling for forensics and ballistics. In MM and Sec08: Proceedings of the 10th ACM Workshop on Multimedia and Security. Oxford, UK; 2223 Sept 2009:3-9.

Bohnert, M., Weinmann, W., & Pollak, S. (1999). Spectrophotometric evaluation of postmortem lividity. Forensic science international, 99(2), 149-158.

Hughes, V. K., Ellis, P. S., Burt, T., & Langlois, N. E. I. (2004). The practical application of reflectance spectrophotometry for the demonstration of haemoglobin and its degradation in bruises. Journal of clinical pathology, 57(4), 355-359.

Wyszecki G, Stailes WS. Color science, concepts and methods, quantitative data and formula, 2nd ed. New York: Wiley 1982.


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