Article

Analysis of Newsprint Color Reproduction within the Newspaper Association of America Solid Ink Density and Color Gamut Standards

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Abstract

In the process of multicolor offset printing, a paste ink of a given color – yellow, magenta, cyan, and black (CMYK) is transferred from the ink fountain to the series of inking rollers and then to the image areas of the plate (image carrier). The inked image area of the plate is then transferred to the blanket, and from the blanket it is transferred to the paper. A continuous tone color, or black and white photograph, is composed of a full spectrum of shades and color, from near white to dense black. The method by which a continuous tone photograph is transformed to a printable image is called halftoning, in which varying percentages of the press sheet are covered with halftone dots to represent the varying tones in the image. In the conventional halftoning process these dots are equally spaced. However, the size or diameter of the dots will vary according to the different amounts of light that were reflected from the different tones in the original photograph. The ink printed by each dot, of course, has the same density. At normal viewing distance, the dots of a printed image create an optical illusion of a continuous tone image.

Keywords: graphic communication|printing|quality control|research|visual communication

How to Cite:

Dharavath, H. N., (2006) “Analysis of Newsprint Color Reproduction within the Newspaper Association of America Solid Ink Density and Color Gamut Standards”, Journal of Industrial Technology 22(4).