Quality Consistency Analysis of Dry Toner based Digital Printing on Coated and Uncoated Paper

In the modern era, digital printing has been dominating printing process to print on veriety of paper substrates. Electrophotography is one of the commonly used technology or method in digital printing process. The emerging trends in the field of digital printing take over the position of traditional printing processes which requires the scrutiny of the print quality parameters. The total digital controlling of the printing process gives a hypothesis of achieving the consistent print quality in all prints. This article is scrutinizing that hypothesis by conducting the instrumental (Techkon Spectro Dens Premium spectrophotometer) measurement of colorimetric and densitometric tonal values and quality parameters of the print on coated and uncoated paper which is printed on daily basis. The results show that the Delta E (colour variation) is higher in uncoated papers as compared to the coated prints. Solid ink density and print contrast of black colour has better consistency on uncoated paper and print contrast of all colours on coated are also subjected tothe variations. The solid ink density of yellow colour on coated paper shows highest densitometric value consistency.