V n aginsky dating and characterizing writing what is speed dating format
Humidity also increases degradation, which can be explained by the basicity of the paper.
The influence of heat on the degradation process was found to be rather weak.
Keywords:inks;writing inks;printing inks;ink-jet inks;toners;thin-layer chromatography;ink aging;accelerated aging;induced aging;dye degradation;solvent evaporation;dyes;pigments The relative aging of ink is the comparison of inks of the same formula and on the same paper to ascertain the order in which they were written.By Nato Locktongbam Central Forensic Science Laboratory, Directorate of Forensic Science Services, Ministry of Home Affairs, Government of India, Kolkata Dr. In order to address these challenges, an attempt was made to study the rate of diffusion of inks at different time intervals using hyperspectral imaging. Khound Directorate of Forensic Science, Government of Assam, Guwahati Priyankar Ghosh Central Forensic Science Laboratory, Directorate of Forensic Science Services, Ministry of Home Affairs, Government of India, Kolkata Abstract The challenges faced by the forensic document examiner are to know whether entries/writings with ink made on certain documents – such as logbooks, registers, OMR sheets, cheques, drafts, promising letter/notes, deeds, wills, prescription notes, and other important documents – are executed during the same period of time, or in different periods of time, and to know whether entries/writings were executed by the same ink. Also presented in this paper is a demonstration of the reverse extraction phenomenon which is the fact that some inks extract faster or more completely as the ink ages.Introduction The concept of accelerated (artificial aging) as a way of estimating the age of paper, as measured by the folding endurance test, is well established and documented (1-5).