Relationship between Paper Whiteness and Color Reproduction in Inkjet Printing

Abstract

aPaper is widely used as a substrate for inkjet printing, where the paper feature heavily impacts the print quality, especially the color reproduction. The unprinted area on paper is visible and applied as a background reflectance for the toner layer. Hence, it is worthwhile to understand the effects of paper whiteness on print color reproduction. In this study, the tested papers were treated with different dyes, which resulted in the change of the paper's optical properties, but not surface roughness. The print density was impacted by the paper whiteness and ISO brightness. The effect of the paper whiteness on the print density is a stronger linear correlation compared to the ISO brightness. Paper whiteness has a positive correlation with the ISO brightness. The print colorimetric values (lightness and chroma values) increased with increasing paper whiteness up to a certain level, after which the paper whiteness did not have a noticeable impact on its print lightness and chroma values. The print color (a* and b* values) was affected by its corresponding paper color.

White magnetic paper based on a bacterial cellulose nanocomposite

“…The magnetic papers in all of the above mentioned publications had dark colours. [7][8][12][13][14][15][16][17][18][19][20][21][22] White papers are commonly used in various applications [23][24] but the introduction of magnetic particles typically destroys the whiteness, turning them black, or reddish-brown depending on the type of magnetic particles used. Non-magnetic papers, such as flexo and offset, also require a high degree of whiteness.…”

Synergetic effect of cationic starch (ether/ester) and Pluronics for improving inkjet printing quality of office papers

“…OD is an important parameter to evaluate the depth of the color tone in the printed papers, which clearly affects the perceived saturation of a color (Hu, Fu, Chu, & Lin, 2017). Figure 5 represents the OD of the black color with increasing concentration of SB (A), Pluronics (B), PCC (C) and SB/P123/PCC (D).…”

“…Whiteness, positively correlated with ISO brightness, represents a paper´s ability to equally reflect a balance of all wavelength of light across the visible spectrum (Hu et al, 2017). The addition of OBA on the paper surface is a costeffective solution in papermaking to increase the whiteness of printing and writing papers (Shi et al, 2012).…”

Description of Thermochromic Offset Prints Morphologies Depending on Printing Substrate

“…Surface sizing is applied to control some relevant paper surface properties, such as porosity, roughness, and surface energetics, to promote an adequate interaction with inks and to improve the final printing quality [37,46]. The paper's optical properties (optical density, color, whiteness, brightness) have a large impact on the print quality due to the paper visible between the printed area, defining the background reflectance for the print layer [48].…”