Готові списки джерел за темами / Printing ink Absorption and adsorption

Добірка наукової літератури з теми "Printing ink Absorption and adsorption"

Автор: Grafiati

Опубліковано: 10 грудня 2022

Оновлено: 29 січня 2023

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Статті в журналах з теми "Printing ink Absorption and adsorption"

Cheng, Yun, Hongjie Zhang, Xue Zhang, Wenhui Zhang, Chuanfei Shi, Rongyao Zhu, Ting Jiao, and Haiyan Zhang. "The adsorption mechanism of water-based ink particles onto cellulosic fibers." BioResources 15, no. 4 (October 23, 2020): 9375–84. http://dx.doi.org/10.15376/biores.15.4.9375-9384.

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Анотація:

Water-based flexographic-printed ink has attracted much attention due to the reduced emission of volatile organic compounds in the printing process. However, it is difficult to remove water-based ink particles with small particle size and high hydrophilicity because they are easily reabsorbed onto cellulosic fibers during wastepaper recycling. In this paper, the absorption mechanism of water-based ink particles onto fibers was studied by using isotherm models and adsorption dynamic kinetics models at different temperatures. The adsorption process was fitted to the Freundlich isotherm, and the adsorption behavior was spontaneous and exothermic processes with an increase of entropy. It fitted well with the pseudo-second-order rate model, and the equilibrium adsorption amounts at three temperature conditions were 2.55, 2.34, and 2.21 mg/g, respectively. The B value was 9.20 g·mg−1·min−1, and the Ea value was 15.6 kJ·mol−1. The results showed that it was easier to remove the water-based ink particles from cellulosic fibers under shorter contact time and higher operation temperature during wastepaper recycling. It would be helpful to optimize the wastepaper recycling operation and to develop a novel deinking process.

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Li, Ying, Wen Juan Gu, and Bang Gui He. "Research on the Influence of Printing Pressure and Speed on Print Quality of Coated Paper." Advanced Materials Research 663 (February 2013): 286–90. http://dx.doi.org/10.4028/www.scientific.net/amr.663.286.

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What happens in the paper surface about ink absorption is of great important for appearance of final printing. The aim of this experiment was to investigate the influence of printing pressure and printing speed on ink layer thickness transferred onto coated paper through quantitative analysis by laser scanning confocal microscope (LSCM). Meanwhile, the influence of printing pressure and printing speed on print density and print gloss were obtained. The results implied that higher printing pressure resulted in higher ink layer thickness, print density and print gloss when printing pressure is less than 700N, but higher printing speed resulted in lower ink layer thickness, print density and print gloss when printing pressure is constant. It could be concluded that the coated paper with high printing speed compared with low printing speed resulted in lower ink absorption, lower print density, lower print gloss and worse printability on the condition of same printing pressure.

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Li, Ying, Wen Juan Gu, and Bang Gui He. "Describing the Influence of Ink Type on Ink Penetration and Distribution." Advanced Materials Research 881-883 (January 2014): 1451–54. http://dx.doi.org/10.4028/www.scientific.net/amr.881-883.1451.

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Ink is transferred and sets onto the paper surface in the printing process, which affect printing quality and usage of ink. The objective of this experiment was to investigate the influence of ink type on ink absorption and characterize the penetration depth through quantitative analysis by Laser Scanning Confocal Microscope (LSCM). Fluorescent ink was used to observe and characterize ink penetration by LSCM. Three-dimensional images of ink pigment penetration were obtained by reconstructing all XY plane images. It could be concluded Common offset printing ink compared with UV offset printing resulted in deeper ink penetration ,uneven ink distribution and lower print density. Because the composition and drying method of UV offset printing ink and common offset printing ink were significant different, penetration depth and distribution uniformity of these two types of offset printing ink in coated paper were distinct.

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Li, Jiehua, Chuanshan Zhao, Wenjia Han, and Yifei Jiang. "Study on color ink-jet printing paper coating with nano-SiO2 as pigment." E3S Web of Conferences 79 (2019): 01002. http://dx.doi.org/10.1051/e3sconf/20197901002.

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With many years of research, color ink-jet printing technology has reached the requirements of color ink-jet printing. The significance of this experiment is to find a suitable method to improve the quality of color ink-jet printing paper. In this work, the dispersion effect and types of sodium polyacrylate (PAAS) on nano-SiO2 solution are discussed, and the most suitable PAAS dosage is selected. When the dosage of PAAS is 8%, the dispersibility of nano-SiO2 solution is much better, with an average color density of 1.60, a gloss of 59% and an ink absorption value of 10.2 cm. Adhesives also have a great influence on color ink-jet printing paper. When the amount of PVA is 30% of nano-SiO2, the average color density is 1.62. Glossiness and ink absorption are also the best.

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Zhu, Zhi Wei, Guang Xue Chen, Qi Feng Chen, and Ming Guang Yu. "Influence of Ink-Jet Paper Surface Characteristics on Color Reproduction." Applied Mechanics and Materials 151 (January 2012): 373–77. http://dx.doi.org/10.4028/www.scientific.net/amm.151.373.

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With the rapid development of color science, especially the ink-jet printing, the evaluation of the color copy effectiveness become one of the most important evaluation parameters in the ink-jet printing. Meanwhile, it makes the evaluation of the effectiveness of color reproduction become more and more quantitative. This paper selects four ink-jet printing papers with different types and physical properties, according to measurement and analysis of the whiteness, gloss, roughness, absorption and other performance parameters of the papers, it shows the effect from the various performance parameters of ink-jet printing paper to color reproduction. At the same time, the study of this paper offers a certain practical guidance to the selection of ink-jet printing paper as well as the improvement of replication precision of ink-jet printing.

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Li, Zhi Jian, Qing Jun Meng, and Liang Liu. "The Impact of Offset Paper on Ink Transfer Rate and Ink Absorption Rate." Advanced Materials Research 560-561 (August 2012): 506–9. http://dx.doi.org/10.4028/www.scientific.net/amr.560-561.506.

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The ink transfer rate and ink absorption rate directly affects the quality of printing matter, so it is very important to know the influence factors of the ink transfer rate and ink absorption rate. This paper studied on the impact of offset paper smoothness and offset paper absorbency on the ink transfer rate, the impact of offset paper compactness and offset paper absorbency on the ink absorption rate. The results show that ink transfer rate is affected by offset paper smoothness within a certain range. The ink transfer rate is affected greatly by offset paper absorbency. The ink absorption rate is greatly affected by offset paper compactness and absorbency.

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Hu, Kai Tang, Ming Li, and Bing Hu. "The Impact of Paper Formation on Printability." Applied Mechanics and Materials 217-219 (November 2012): 849–52. http://dx.doi.org/10.4028/www.scientific.net/amm.217-219.849.

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Анотація:

paper formation, smoothness, bulk, ink absorption, printability. Abstract. The impact of the paper formation on smoothness, compressibility, uniform of ink absorption is discussed in this paper. The experimental esults indicate that the paper with bad formation leads to higher apparent bulk, and the paper with bad formation shows nonuniform calendering and low compressibility. The bad formation of paper also results in deformation and omission of printing dots, which affects directly the reproduction of the printing images.

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Thorman, Sofia, Göran Ström, and Patrick A. C. Gane. "Impact of non-uniform water absorption on water-interference print mottle in offset printing." Nordic Pulp & Paper Research Journal 33, no. 1 (May 23, 2018): 150–63. http://dx.doi.org/10.1515/npprj-2018-3011.

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Abstract Print mottle is a serious and yet common print defect in offset printing. An imbalance between the feed of fountain solution and the ability of the paper substrate to absorb and transport this water away from the surface can cause moisture/water interference problems. In the study presented here, we have investigated the uniformity of aqueous absorption and coating structure of pilot-coated papers with different types and dosages of dispersants and linked this to print mottle and uncovered areas (UCA). In earlier studies, the print quality of these papers indicated that a moderate addition of excess dispersant caused ink refusal, ink-lift-off (ink-surface adhesion failure) and water-interference mottle when printing at elevated fountain feed. In the present study, we have shown that a majority of the samples with uneven water/moisture absorption and an uneven burn-out reflectance tended to have more severe printing problems related to surface-moisture/water.An aqueous staining technique was used to characterise the absorption non-uniformities. This method has been developed previously with focus on absorption of flexographic water-based inks but can clearly give relevant information also for offset printing, when it comes to moisture/water interference mottle.

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Li, Ying, Wen Juan Gu, and Bei Hai He. "Relationship between Binder Content and Ink Absorption of Coated Paper." Advanced Materials Research 650 (January 2013): 206–10. http://dx.doi.org/10.4028/www.scientific.net/amr.650.206.

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The ink penetration behavior depends on the coating surface structure and surface properties of the coating layer in the papermaking process, which include coating recipes and coating conditions, etc. The objective of this experiment was to investigate the relationship between binder content and ink absorption using laser scanning confocal microscope (LSCM). Fluorescent ink was used to observe and characterize ink penetration and distribution in coated paper by LSCM. The results indicated that higher binder content could result in higher amount ink absorption. With the increasing of binder content, ink penetration depth in coated paper increased. Sample G2 with 20 parts binder produced the most unevenness ink distribution. It could be concluded that the coated paper with 25 parts binder compared with the other samples resulted in higher ink usage and better printing quality.

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Zhao, Hongzhi, Kun Zhang, Kuanjun Fang, Furui Shi, Ying Pan, Fuyun Sun, Dezhen Wang, Ruyi Xie, and Weichao Chen. "Insights into coloration enhancement of mercerized cotton fabric on reactive dye digital inkjet printing." RSC Advances 12, no. 17 (2022): 10386–94. http://dx.doi.org/10.1039/d2ra01053d.

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Анотація:

Mercerization can control the crystallinity of cotton fiber, promote the absorption of ink droplets' wick into the fiber and inhibit ink droplets from penetrating the back of fabric. Therefore, the printing quality was extremely enhanced.

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Більше джерел

Дисертації з теми "Printing ink Absorption and adsorption"

Mhetre, Shamal Kamalakar. "Effect of fabric structure on liquid transport, ink jet drop spreading and printing quality." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/28244.

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Thesis (M. S.)--Polymer, Textile and Fiber Engineering, Georgia Institute of Technology, 2009.
Committee Chair: Dr. Radhakrishnaiah Parachuru; Committee Member: Dr. Dong Yao; Committee Member: Dr. Fred Cook; Committee Member: Dr. Wallace Carr; Committee Member: Dr. Yehia El Mogahzy

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Svanholm, Erik. "Printability and Ink-Coating Interactions in Inkjet Printing." Doctoral thesis, Karlstad : Faculty of Technology and Science, Chemical Engineering, Karlstad University, 2007. http://www.diva-portal.org/kau/theses/abstract.xsql?dbid=572.

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Chang, Chien-wei, and 張謙維. "Preparation and Analyses of CIGSe Thin Films Solar Cells with the Ink-Printing p-Type Absorption Layer." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/4cawdx.

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Анотація:

碩士
國立臺灣科技大學
材料科學與工程系
99
The non-vacuum processes for Cu(In,Ga)Se2(CIGSe) solar cells have gradually attracted the researchers’ attentions. However, the major problem of the non-vacuum processes is the densification and the purity of the p-type absorption layer. In this study, CIGSe thin film solar cells were prepared by using ink-printing on alumina substrates. The p-type layers with the composition of Cu0.8In0.7Ga0.3Se2 were prepared from the inks containing the single-phase CIGSe powder, the mixed powder of Cu2Se, In2Se3, and Ga2Se3, and the mixture of single-phase powder and the mixed powder at the weight ratio of 50:50. The densification involves the one-step and two-step processes at different sintering temperatures. Some of the specimens were underwent the constrained sintering. The CIGSe solar cell was constituted with the stacking form of Ag/ITO/ZnO/CdS/ink-printing CIGSe/Mo/Al2O3. The quality of the absorption layer was analyzed by X-ray diffractometer and field emission of scanning electron microscope equipped with energy dispersive X-ray spectrometer. The performance of the solar cells was evaluated under the standard AM1.5 illumination. The experimental results showed that the best condition for the ink-printing CIGSe thin film with a thickness of 5 um was using the two-step process and the single-phase powder, sintering at 700–750 oC, and undergoing constrained sintering. The CIGSe films had the desired composition, good crystallinity, and the grain size of 600–700 nm. The stacked solar cells displayed the power conversion efficiencies of 1.1% and 1.5% for the cells with the CIGSe layers prepared from the 50/50 powder and the single-phase powder.

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Частини книг з теми "Printing ink Absorption and adsorption"

Deng, Qian, Ruizhi Shi, and Jilei Chao. "Research on the Ink Absorption Performance of Coating on Foamed Plastic Surface." In Advances in Graphic Communication, Printing and Packaging Technology and Materials, 563–72. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-0503-1_81.

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Тези доповідей конференцій з теми "Printing ink Absorption and adsorption"

Al-okaily, Ala’a, and Placid Ferreira. "Characterization of Delamination in Laser Micro Transfer Printing." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-64668.

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Micro transfer printing is rapidly emerging as an effective method for heterogeneous materials integration. It transfers prefabricated micro- and nanoscale structures referred to as ‘inks’, from growth or fabrication donor substrates to functional receiver substrates. Laser Micro Transfer Printing (LMTP) is a laser-driven version of the micro transfer printing process, developed at the University of Illinois to enable non-contact release of the microstructure, thus making the transfer printing process independent of the properties or preparation of the receiving substrate. In this paper, an extensive study is conducted to investigate the capability of the LMTP process. Using square shaped silicon inks and polydimethylsiloxane (PDMS) stamps, and varying the lateral dimensions and thickness of the ink, the power absorption by the ink is measured to estimate the total energy stored in the ink-stamp system to initiate and propagate delamination at the interface. The delamination time for each size and thickness is experimentally observed at different laser beam powers using a high speed camera. Further, an axisymmetric thermo-mechanical FEM is developed to estimate the delamination temperatures at the interface utilizing the delamination time and power absorption for different ink sizes and thickness.

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Karlovits, Igor, and Gregor Lavrič. "Paper surface efficiency and inkjet colour reproduction on invasive and agro residue papers." In 10th International Symposium on Graphic Engineering and Design. University of Novi Sad, Faculty of technical sciences, Department of graphic engineering and design,, 2020. http://dx.doi.org/10.24867/grid-2020-p17.

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Paper surface efficiency was developed by Preucil and was intended to define the colourimetry and geometrical part of the light reflection with paper surface values. The surface characteristics of paper, primarily its roughness and absorptivity affect colour reproduction beside the ink pigments or dye. Rougher paper surfaces scatter the light in a more non-uniform manner while paper absorption may cause ink vehicle absorption and thus decreasing gloss, or it may absorb both vehicles and pigment-producing an unexpected colour shift. The formula was upgraded with paper whiteness values as the basic formula did not explain the whole phenomena. These paper properties were the foundation of the paper standardisation for standardised printing. On the other hand, during inkjet printing, a limited amount of liquid is deposited onto a paper surface. When the droplet hits the surface, it starts to spread and wet the surface depending on the ink and paper properties and had different colourant deposition from the formulas used mainly for offset printing inks. In this paper, we have researched the modified surface efficiency formula applied to inkjet printing (HP PageWide Pro 477dw) on invasive and agro-residue papers with specific non-white paper shades. We have measured the dynamic liquid penetration using ultrasound measurement to model the surface behaviour of the inks and measured CIE LCH values of the samples and calculated the CIE ΔE00 colour differences and the influence of paper surface efficiency and paper shade influence on the colour reproduction. The results indicate that using recalculated Cobb Absorption values gives good negative linear correlation with the original formula regarding the magnitude of colour difference.

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Żołek-Tryznowska, Zuzanna, and Marta Więcek. "Measurements of surface free energy as a tool to asses the effect of varnishing and printing of the paper substrates." In 10th International Symposium on Graphic Engineering and Design. University of Novi Sad, Faculty of technical sciences, Department of graphic engineering and design,, 2020. http://dx.doi.org/10.24867/grid-2020-p18.

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Nowadays, printing products might be finished in various ways. Varnishing process is one of the most popular finishing method which gives various effect, such as mate, glossy etc. However, the varnish layer applied on the paper is very thin, therefore it can be invisible to the naked human eye. The aim of this work was to use contact angle measurement and surface free energy determination as a tool to assess the effect of printing and varnishing process of paper materials. We have used various tools in order to analyses the changes of surface: surface roughness, gloss, water contact angle absorption and surface free energy determination. Those tools were used in order to confirm whether the print has been covered with varnish or not. In this work six various paper substrates were used (glossy, coated and un-coated papers). The printing and varnishing was performed in laboratory conditions using flexographic water-based printing and waterbased varnish. Samples were prepared as follows: paper with ink coating, paper with varnish coating and paper with ink layer and varnish layer on the top. The surface roughness was determinated of all samples and compared. The surface roughness changes were observed for pure paper, overprinted and overvarnished. Next, the gloss of samples prior and after printing and varnishing was measured. The gloss of the samples increases when they are printed or varnished, what is related with properties of ink and varnish. Also, the thickness of ink and varnish layers was determinated. The thickness of the samples increases when the number of layers increases. Finally, the water contact angle was measured and surface free energy was calculated with Owens-Wendt method. Our results reveal the possibility of using various tools in order to confirm the performance of varnishing of the prints. The printing with various colors is always seen by the naked human eye. On the other hand, the varnish layer might be not visible. However, such a comparison is not possible if we do not have the pure paper substrates prior printing or varnish.

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Suffield, Sarah, and Amir Jokar. "Modeling the Flow of a Liquid Droplet Diffusing Into Various Porous Media for Inkjet Printing Applications." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-68151.

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Анотація:

Inkjet technology currently relies heavily upon the absorption of ink into porous media. Characterizing the absorption capacity of media as well as the absorption rate can be critical in understanding the entire drying process. Evaluating the absorption performance of a coated medium can particularly be important since the coating may be either semi-absorptive, or in some cases non-absorptive. The absorption performance can also vary among uncoated media. In order to better understand the absorption mechanism, the fluid flow of a water droplet impacting with and diffusing into several porous papers, each with a unique permeability, was analyzed numerically and experimentally in this study. The droplet impact was simulated by computational fluid dynamics techniques for a variety of conditions. The transient computational modeling predicted the shape of the droplet at different time intervals before and after the impact. It also predicted the volume of liquid that had diffused into the porous substrate over time. The results predicted by the computational modeling were then compared to experimental data, which was collected for a real system with the same configuration as in the computational modeling using a high speed digital video camera. The camera captured images of the droplet as it impacted with various coated and uncoated papers. Results showed a relatively good agreement between the computational modeling and experimentation at drop times greater than 0.1 seconds after the impact. A dimensional analysis was also performed on the most effective parameters of the flow process, and a correlation was developed to predict the aspect ratio of the droplet after the impact as a function of the other dimensionless parameters, such as Reynolds and Weber numbers. The results of this study can be useful for drying applications, such as inkjet printing, where absorption of a liquid into a porous medium is critical for the drying process.

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