Abstract
The quality of the letters printed on the tobacco cigarettes, brand name “John Player™” is found to be viscosity dependent on the ink used for printing. The viscosity changes of the ink used, cause the printed letters to be smudged and of poor quality. At present selection of bad quality prints are done by visual identification, as no scientific technique is available. We have developed a light scattering technique using a 632.8 nm 20 mW He-Ne laser system to correlate the scattering intensity with the viscosity of the ink used, LogoRed TC2582. As a result, a standard has been assigned and quality of the cigarette prints can be maintained during the manufacturing process.
Highlights
The print quality of the letters on the tobacco cigarettes John Player “Gold Leaf” is found to be viscosity dependent on the ink used in the printing process
This paper reports a light scattering technique that we have developed to monitor the cigarette print quality of the commercially available John Player tobacco cigarettes
The cigarette paper was mounted on a ThroLabTM XYZ 1.0” translating mount and TEM00 laser beam was focused to a selected letter, e.g. “J” and the backscattered radiation was monitored with a 180° degrees geometry using 20 cm long 2 mm diameter fiber optic cable
Summary
The print quality of the letters on the tobacco cigarettes John Player “Gold Leaf” is found to be viscosity dependent on the ink used in the printing process. Changes in viscosity result as the nozzle in the printing machine gets warms up making the quality of the. Jayaweera et al /Sri Lankan Journal of Physics, Vol. (2005) 1-6 print “Gold Leaf, John Player” poor and smudged. Apart form the visual identification of such bad prints no scientific method was available to select the poor quality cigarette paper prints. This paper reports a light scattering technique that we have developed to monitor the cigarette print quality of the commercially available John Player tobacco cigarettes. A linear relationship of the ink viscosity and the backscattered light intensity arising from the front illuminated cigarette prints made possible to set a standard for a quality print
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