International Journal of Science, Engineering and Computer Technology

Anjan Kumar Baral ¹, Rajendra Kumar Anayath ², Ankur Joshi ³

Affiliations
1 GJUS&T, Hisar, Haryana, IN
2 TITS, Bhiwani, Haryana, IN
3 Malhotra Graphics, Mumbai, IN

Abstract

Print mottle is considered as one of the most important print factors while considering the visual impression of print quality. It is basically the result of uneven ink layer/non-uniform ink absorption across the paper surface and it is more prominently visible in middle tone images or areas of uniform colour such as solids and continuous tone screen images. Mottle pictures can also be observed visually and hence it needs utmost care and attention for enhancing the final print quality. Various grades of papers are used in the digital printing machines for a wide variety of print products and for the high quality print products coated papers are generally used. Effect of mottle on coated paper especially when using digital printing machines is the basic point which needs discussion and deliberation.

Keywords

Printing, Coated Paper, Digital Printing, Mottling.

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Ambrish Pandey ¹, Rajendra Kumar Anayath ²

Affiliations
1 Department of Printing Technology, GJUS&T, Hisar, Haryana, IN
2 The Technological Institute of Textile & Sciences, Bhiwani, Haryana, IN

Abstract

This paper analyzes the variation in judgment for selection of best hue ffromcolour patches between D50 light and D50 light with U.V. light the experiments for his study is performed in adherence with the ISO Standards and the results of this study shows that the trend for selection of hue in case of D50 light and D50 light with U.V. light is similar for Cyan with Yellow color and Magenta and Black color.

Keywords

Hue, U.v. Light, Print Contrast, Cie, Lab Values, Delta E, Standard Observer.

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