Effects of Paper Properties on Printing Dot Gain and Color Gamut

2011 ◽  
Vol 236-238 ◽  
pp. 1238-1241
Author(s):  
Yong Gang Yang ◽  
Qiao Zhuo Gao ◽  
Fu Ping Liu
Keyword(s):  
Color Gamut ◽  
Paper Properties ◽  
Gain Curve ◽  
Dot Gain ◽  
Printing Processes

The properties of art paper and offset paper were measured, including whiteness, smoothness, gloss and absorbability. And these paper samples were printed using machine proofing with the uniform printing processes. Dot percentage and the tri-stimulus values (X, Y and Z) of dot areas and solid areas were tested with the spectrophotometer X-Rite 530 on the print paper samples. At last, dot gain curve and chromatic diagram were drawn after data analyzing and processing, and then the influences of paper properties on printing dot gain and gamut of color were analyzed. The results showed less dot gain value and greater gamut of color occurred because of higher smoothness, gloss, whiteness and lower absorbability to art paper when the printing conditions were definite, so the dot reproduction quality on the surface of art papers was better. But which of the above-mentioned were opposite to offset papers.

Research on the Effects of the Basic Properties of Offset Paper and Art Paper on Printing Dot Reproduction

2011 ◽  
Vol 287-290 ◽  
pp. 3089-3092
Author(s):  
Yong Gang Yang ◽  
Fu Ping Liu
Keyword(s):  
Color Gamut ◽  
Gain Curve ◽  
Basic Properties ◽  
Dot Gain ◽  
Chromatic Coordinates

The properties of offset paper and art paper including smoothness, gloss and absorbability, dot percentage and the tri-stimulus values of every dot areas and solid areas of the printed paper samples were measured. Dot gain curve and chromatic diagram were drawn after dot gain values and chromatic coordinates (x, y) were calculated. The results showed that smaller dot gain value and greater color gamut occur on the art paper due to its higher smoothness, gloss and lower absorbability when the printing conditions were the same, so the printing dot reproduction quality on the surface of art paper is better. However because offset paper has lower smoothness and gloss, higher absorbability compared with art paper, therefore the dot reproduction quality on offset paper is not as good as art paper.

A Study of Color Variance between Vacuum Plate of Aluminum and Aluminum Foil Using UV Offset Printing

2012 ◽  
Vol 262 ◽  
pp. 253-257
Author(s):  
Chang Lang Chen ◽  
Mei Chun Lo ◽  
Ming Chw Wei ◽  
Shi Wei Wang
Keyword(s):  
Aluminum Foil ◽  
Packaging Materials ◽  
Offset Printing ◽  
Color Gamut ◽  
Test Form ◽  
White Board ◽  
Printing Quality ◽  
Dot Gain ◽  
Green Packaging ◽  
The Difference

In packaging market, Vacuum Plate of Aluminum by UV offset printing is light impediment effectively, moisture-proof, and forgery-proof and reaches the request of the green packaging production. Thus, the packaging of Vacuum Plate of Aluminum is used widely. This study was a true experimental research. The test form employed was the printing quality control strip from international printing specification. It was used to record and analyze the color variance between Vacuum Plate of Aluminum and Aluminum Foil with white board and no white board using UV Offset Printing. The study indicated the comparison of Tone Value Increased & the difference of Color Gamut Range among these three packaging materials via C, M, Y, K four colors tone value and RGB area testing, and results reveals that the tone value on the Vacuum Plate of Aluminum with white board increased most among these three materials; the dot gain percentage of the Vacuum Plate of Aluminum is less than 15% which with the highest stability than others. All signature findings are given in Fig.1 and Fig.2. These results are entirely consistent with research hypotheses.

The Study on Color Print Quality Attributes of In-Mold Roller Using Digital Inkjet Printing

2012 ◽  
Vol 262 ◽  
pp. 340-344 ◽  
Author(s):  
Chang Lang Chen ◽  
Mei Chun Lo ◽  
Yun Ti Su ◽  
Yu Tung Chang
Keyword(s):  
Inkjet Printing ◽  
Screen Printing ◽  
Print Quality ◽  
Gravure Printing ◽  
Color Gamut ◽  
Printing Process ◽  
Study Results ◽  
Pet Film ◽  
Printing Processes ◽  
Potential Use

The In-Mold Roller is a revolutionary printing process by which objects are 3D decorated. The products decorated by In-Mold Roller are protected from water and fading. These kinds of decorations strongly increase the beauty, desirability and value of the objects. The In-Mold Roller is now using either of gravure printing and screen printing to print PET film. However, there are some problems with these two techniques. This research is to investigate the potential use of combining In-Mold Roller with digital inkjet printing in 3D decoration, e.g. in personalized printing services. The study results found show that digital inkjet printing to the PET film and then transfer to the ABS, the solid ink densities (SIDs) of primaries would increase. The tone values increases (TVIs) from highlight and middle (around 0~60%) were generally higher than those in shadows. The shapes and sizes of color gamut were also varied according to different kinds of digital UV inkjet printing processes. Moreover, after transferred, the color gamut became smaller.

Study on Color Management of Digital Proofing

2012 ◽  
Vol 182-183 ◽  
pp. 352-356
Author(s):  
Hong Guang Sun ◽  
Kai Li ◽  
En Qiang Yin ◽  
Hong Ju Cheng
Keyword(s):  
Control Method ◽  
Evaluation Model ◽  
Quality Analysis ◽  
Color Management ◽  
Color Information ◽  
Color Gamut ◽  
Practical Solution ◽  
Solid Density ◽  
Dot Gain ◽  
And Control

The purpose of this experiment was to demonstrate a quality analysis and control method for color management of EPSON 7600 color printer. The parameters of proofs, including solid density, dot gain, gray balance and color gamut were measured, and were compared with the offset quality. The paper put forward a practical solution for editing and optimizing color management and the profiles of devices. At the same time, the effect in Transmission and conversion of color information in standardized color management was analyzed and the evaluation model of color management and profile was established, which included subjective and objective evaluations.

Physical and optical dot gain: characterization and relation to dot shape and paper properties

2014 ◽  
Author(s):  
Mahziar Namedanian ◽  
Daniel Nyström ◽  
Paula Zitinski Elias ◽  
Sasan Gooran
Keyword(s):  
Paper Properties ◽  
Dot Gain

Study on the Prediction Model of Paper Printability in Ink-Jet Printing

2012 ◽  
Vol 182-183 ◽  
pp. 1126-1130
Author(s):  
Shuang Lian Chen ◽  
Guang Xue Chen ◽  
Qi Feng Chen ◽  
Zhen Cai Qu ◽  
Rui Xin Xu
Keyword(s):  
Prediction Model ◽  
Evaluation System ◽  
Quality Parameters ◽  
Quality Parameter ◽  
Paper Properties ◽  
Ink Jet Printing ◽  
Printing Quality ◽  
Ink Jet ◽  
Dot Gain ◽  
Jet Printing

The influences of the paper properties on ink-jet printing quality are very complex. In order to predict the printing quality quickly and accurately, it is necessary to establish a mathematical model and an evaluation system, based on which we can estimate the paper used for ink-jet printing is suitable or not. In this paper, five kinds of ink-jet papers with different properties were chosen, and the properties including brightness (X2),gloss(X3),roughness(X4),air permeability(X5) and absorbency(X6), were tested; then ink-jet printing in the same conditions was carried out and different printing parameters were tested, including solid density(D),dot-gain(DG),print contrast(K)and hue(H). Through combining analysis of each single printing quality parameter with some paper properties by using PCA of SPSS, the correlation functions D/DG/K/H(X2, X3, X4, X5, X6) were obtained. Meanwhile, a comprehensive function Y(D, DG, K, H) involving the printing quality parameters was achieved through synthesis data processing of SPSS. This study shows the influences of paper properties on the printing quality parameters and their corresponding weights, and it also proposes a prediction model of paper printability, which can provide a theory reference for printing work in ink-jet printing.

The Influence of Offset Paper Properties on Printing Effect

2012 ◽  
Vol 550-553 ◽  
pp. 3295-3298
Author(s):  
Zhi Jian Li ◽  
Qing Jun Meng ◽  
Liang Liu
Keyword(s):  
Optical Density ◽  
Great Influence ◽  
Saturation Density ◽  
Color Gamut ◽  
Paper Properties ◽  
B Values ◽  
Paper Making ◽  
The Relationship

Offset paper properties have great influence on the quality of print matter. Eleven offset paper samples were printed by IGT printability tester, then the density and L*a*b values of printed samples were measured. The relationship between paper properties and optical density or color gamut of paper printed was studied. The results show that main density increases with the increased ink quantity before the main density reaches saturation, the saturation density becomes greater with increased ink absorbency. When the smoothness is larger, lower ink quantity is needed for reaching saturation density, and larger color gamut is obtained. This study will provide references for the paper making and printing enterprises.

Study on the Effect of Paper Properties on the Dot Reproduction Attributes Based on the Grey Relational Analysis

2012 ◽  
Vol 262 ◽  
pp. 297-301
Author(s):  
Fu Qiang Chu ◽  
Chun Yan Li
Keyword(s):  
Inkjet Printing ◽  
Grey Relational Analysis ◽  
Great Influence ◽  
Surface Wettability ◽  
Analysis Method ◽  
Paper Properties ◽  
Minimal Impact ◽  
Relational Analysis ◽  
Dot Gain ◽  
Grey Relational

The paper properties such as roughness, gloss, surface wettability and other factors have great influence on the dot reproduction attributes of presswork, and different paper factor has different effect weight on the dot reproduction. The main purpose of this paper is to provide a new method to analyze the influence of paper properties on the dot reproduction. The method is to apply the grey relational analysis to analyze the influence law and the effect weight of paper factors on the dot reproduction during inkjet printing, which could provide theoretical guidance for improving the printability of paper. The grey relational analysis is a multi-factor statistical analysis method, which is based on the sample data and the grey incidence of various factors and is used to describe the strength, size and the order of the relationship between the factors. In this experiment, five types of inkjet printing paper were used to test their printing performance, and then the dot gain data were dealt with by the grey relational analysis method. Results showed that paper properties had a great influence on ink setting. Ink drop diffused and deformed less and dot gain was small when paper had smooth surface. According to the correlation coefficient degree of paper properties which influence on the dot gain of inkjet printing, the sequence was whiteness, roughness, surface wettability and gloss. Whiteness and roughness could significantly influence dot gain, followed by surface wettability, and gloss with minimal impact. Experiment indicated that the grey relational analysis was a simple and effective tool to analyze the influence of paper properties on the dot reproduction of presswork.

Study on Comprehensive Evaluation Model of Art Paper Printability

2012 ◽  
Vol 550-553 ◽  
pp. 3282-3285
Author(s):  
Zhi Jian Li ◽  
Qing Jun Meng ◽  
Bao Hong Yang
Keyword(s):  
Quantitative Method ◽  
Comprehensive Evaluation ◽  
Evaluation Model ◽  
Paper Properties ◽  
Burst Strength ◽  
Gain Rate ◽  
Dot Gain ◽  
Comprehensive Evaluation Model ◽  
Spss Software

Paper printability directly affects the printing process and the final quality of printing matter. Therefore, it is significant to establish accurate, scientific, reasonable comprehensive evaluation model of the paper printability. Five art paper samples were researched in this paper. Different paper properties including whiteness, opacity, smoothness, ink absorption, tensile strength and burst strength were tested. The comprehensive evaluation model of art paper printability was obtained by using SPSS software. Then printing dot gain rate, printing density, printing glossiness and overprint rate were measured for verifying predicted results. Results show that the evaluation model can provide a practical and quantitative method for rapid evaluation of comprehensive printability of art paper.

SEM Study of Tension Wood Fiber Morphology and its Effect on Paper Properties

1977 ◽  
Vol 35 ◽  
pp. 308-309
Author(s):  
K. W. Robinson
Keyword(s):  
Tension Wood ◽  
Wood Fiber ◽  
Strength Properties ◽  
Fiber Morphology ◽  
Paper Properties ◽  
Pure Cellulose ◽  
Short Rotation ◽  
Hardwood Trees ◽  
Sem Study

Tension wood (TW) is an abnormal tissue of hardwood trees; although it has been isolated from most parts of the tree, it is frequently found on the upper side of branches and leaning stems. TW has been classically associated with geotropic alignment, but more recently it has been associated with fast growth. Paper made from TW is generally lower in strength properties. Consequently, the paper industries' growing dependence on fast growing, short- rotation trees will result in higher amounts of TW in the final product and a corresponding reduction in strength.Relatively few studies have dealt with the role of TW in the structure of paper. It was suggested that the lower strength properties of TW were due to a combination of factors, namely, its unique morphology, compression failures in the cell wall, and lower hemicellulose content. Central to the unique morphology of the TW fiber is the thick gelatinous layer (G-layer) composed almost entirely of pure cellulose.

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