Quality Analysis of Gravure Spot Color Reproduction with an Ink Jet Printer

Wu, Yu; Fleming, Paul D.; Pekarovičová, Alexandra

doi:10.2352/j.imagingsci.technol.(2008)52:6(060501)

Cited by 3 publications

(2 citation statements)

References 18 publications

(2 reference statements)

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“…From the above result, it can be seen that the regression precision obviously improves as the number of polynomial terms increases, but when the number of terms reaches a certain value the mean error becomes small enough. For example, for the first-degree polynomial 4 , the average error is 10.9106Δ which exceeds the reproduction error threshold [17,18], and the maximal error is 37.5866Δ which is a visually unacceptable error. Additionally its standard deviation and variance are 5.4642Δ and 29.8576Δ , respectively, which indicate that the distribution of errors is unsatisfactory.…”

Section: Number and The Degree Of Polynomial Termsmentioning

confidence: 99%

Evaluating the Performance of Polynomial Regression Method with Different Parameters during Color Characterization

Sun

Liu

Zhou

et al. 2014

Mathematical Problems in Engineering

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The polynomial regression method is employed to calculate the relationship of device color space and CIE color space for color characterization, and the performance of different expressions with specific parameters is evaluated. Firstly, the polynomial equation for color conversion is established and the computation of polynomial coefficients is analysed. And then different forms of polynomial equations are used to calculate the RGB and CMYK's CIE color values, while the corresponding color errors are compared. At last, an optimal polynomial expression is obtained by analysing several related parameters during color conversion, including polynomial numbers, the degree of polynomial terms, the selection of CIE visual spaces, and the linearization.

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Section: Number and The Degree Of Polynomial Termsmentioning

confidence: 99%

Evaluating the Performance of Polynomial Regression Method with Different Parameters during Color Characterization

Sun

Liu

Zhou

et al. 2014

Mathematical Problems in Engineering

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“…All these components affect accuracy of proof-press color matching in digital proofing systems. 4,7,8 There are ongoing efforts to develop new proofing systems that will meet the requirements, such as simulation of color of paper, effect of gloss, spot color reproduction, and remote proofing. 9 Print media properties are important from the point of view of ink and paper interaction and achieving desirable color matching quality, and reproducibility.…”

Section: Introductionmentioning

confidence: 99%

Digital Proofing of Spot Color Overprints for Flexography

Sangmule¹,

Pekarovicova

Lovell

et al. 2012

jist

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Due to the advancement in inkjet digital printing, it is possible to print spot color short run jobs with high quality and desired level of consistency in color at low cost. Mostly in the packaging industry, specific color is used for specific requirements of a customer, which is called a spot color. About 40 % of packaging jobs are printed by flexo, 30 % by offset lithography, 22 % by rotogravure, and 8 % by digital and other printing processes. The aim and purpose of this work was to investigate the proof color matching capability of two ink jet digital printers, differing in ink technology and prepress color matching software used, for spot color matching printed on a narrow web flexographic printing press. The results were produced by evaluating color differences between the colorimetric measurements from the flexographic printing press versus the digitally reproduced proofs from the two tested ink jet devices.

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Study of Temperature Fields and Heavy Metal Content in the Ash and Flue Gas Produced by the Combustion of Briquettes Coming from Paper and Cardboard Waste

et al. 2018

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The present study focused on the combustion of four types of briquettes made from paper and cardboard waste produced in Ouagadougou (Burkina Faso). Rotary and tubular kilns were used to study the combustion. The combustion mean temperatures, nitrogen, phosphorus and potassium (NPK) content in the ash and heavy metals content in the ash and the flue gas were analyzed. The combustion steady phase mean temperatures ranged from 950 °C to 750 °C were obtained according to briquettes type. The temperature favored the transfer of the heavy metal in the flue gas comparatively to the ash mainly for Hg, Cd and Pb. The Pb, Hg and Mn content in flue gas and the ash are higher than their content in the parent wood used for paper production due to the additive during the manufacturing process. The results showed a high content of heavy metal in flue gas produced by combustion of briquette made with office paper and in the ash for the briquette made of corrugated cardboard. Furthermore, the low heavy metal contain in the ash allow their use for soil amendment. However, ash contained a low proportion of NPK (less than 2%) which does not allow their usage as fertilizer alone.

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Quality Analysis of Gravure Spot Color Reproduction with an Ink Jet Printer

Cited by 3 publications

References 18 publications

Evaluating the Performance of Polynomial Regression Method with Different Parameters during Color Characterization

Evaluating the Performance of Polynomial Regression Method with Different Parameters during Color Characterization

Digital Proofing of Spot Color Overprints for Flexography

Study of Temperature Fields and Heavy Metal Content in the Ash and Flue Gas Produced by the Combustion of Briquettes Coming from Paper and Cardboard Waste

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