On the Ink Transfer Process in Gravure Printing

2007 ◽  
pp. 907-918
Author(s):  
Suhong Ahn ◽  
Yang Na
Keyword(s):  
Transfer Process ◽  
Gravure Printing ◽  
Ink Transfer

Visualization and simulation of the transfer process of index-matched silica microparticle inks for gravure printing

AIChE Journal ◽  
2016 ◽  
Vol 63 (4) ◽  
pp. 1419-1429 ◽  
Author(s):  
Arnout M. P. Boelens ◽  
Juan J. de Pablo ◽  
Sooman Lim ◽  
Lorraine Francis ◽  
Bok Y. Ahn ◽  
...  
Keyword(s):  
Transfer Process ◽  
Gravure Printing ◽  
Visualization And Simulation

Some factors affecting ink transfer in gravure printing

2002 ◽  
Vol 31 (4) ◽  
pp. 234-240 ◽  
Author(s):  
S. Elsayad ◽  
F. Morsy ◽  
S. El‐Sherbiny ◽  
E. Abdou
Keyword(s):  
Gravure Printing ◽  
Factors Affecting ◽  
Ink Transfer

A numerical study of the ink transfer process for roll-to-roll printing applications

2012 ◽  
Vol 226 (10) ◽  
pp. 2496-2509 ◽  
Author(s):  
Kyunghun Kim ◽  
Taewon Nam ◽  
Yang Na
Keyword(s):  
Newtonian Fluid ◽  
Transfer Process ◽  
Printed Electronics ◽  
Numerical Study ◽  
Measurement Data ◽  
Conductive Ink ◽  
Carreau Model ◽  
Web Handling ◽  
Roll To Roll ◽  
Ink Transfer

An ink transfer process from the printing roll to the moving web was investigated using a computational fluid dynamics technique for the roll-to-roll application in the area of printed electronics. Emphasis was made on the shape of the transferred ink pattern in a realistic configuration. The shear-thinning effect of the conductive ink was treated using a generalized non-Newtonian fluid model. That is, the coefficients of the Carreau model were determined using the fluid dynamic property information of the commercially available conductive ink used in the roll-to-roll process. Also, the web handling speed was matched with that of the typical roll-to-roll process applied in printed electronics. Computational results show that the spatial variation of the shear rate is quite significant in the present configuration; therefore, the Carreau model better predicts the shape of the measurement data than Newtonian fluid in the range of the line thickness of 100–500 µm. It is also noted that the non-uniformity of the transferred ink that is experimentally observed is better predicted by the non-Newtonian model. It is conjectured that the distortion of the shape and the non-uniform distribution of the transferred ink are the prime sources for deterioration in printing quality. However, the fact that web handling speeds of up to 30 mpm (=0.5 m/s) do not significantly aggravate the degree of distortion still supports the main advantage of a cost-effective, continuously running roll-to-roll process in this speed range.

Study about Influencing of Printing Process on Gravure Printing Ink Transfer

2013 ◽  
Vol 469 ◽  
pp. 301-304
Author(s):  
Pu Jun Deng ◽  
Wei Fang ◽  
Jian Dong Lu
Keyword(s):  
Quantitative Analysis ◽  
Process Conditions ◽  
Gravure Printing ◽  
Line Number ◽  
Printing Process ◽  
Ink Transfer ◽  
Printing Processes ◽  
Printing Ink ◽  
Influence Degree ◽  
Printing Speed

Abstract. Gravure printing has the characteristics including thick ink layer, bright and homochromatic color, rich and sharp tone, and strong stereoscopic impression. In the packaging-printing field, gravure printing gets more and more attentions. But in the region of gravure printing process, the study on gravure printing ink transfer is not as deep as offset print. Most researches just stay in the level of qualitative analysis, but the quantitative analysis researches are still insufficient. The factors which impact gravure printing ink transfer are not only the volume of engraving ink cell, but also printing process. In this paper, gravure printing ink transfer is analyzed quantitatively from the point of views of gravure printing pressure, printing speed, scraping blade pressure and ink viscosity. The following research has been done in this paper. Firstly, electronic engraving machine is used to engrave eight different area ink cells by 45° ink cell angle and 70lpc screen line number on the same gravure roller. Secondly, gravure proofing machine is used to make proofs in different process conditions. Thirdly, density meter is used to determine density of cell ink, and balance is used to determine the weight of ink which moves from the plate onto the paper. Finally, to analyze the influence of different printing processes on gravure printing ink transfer. The research results show that gravure printing ink transfer is influenced certainly by different printing processes. Printing process has a certain influence on the gravure printing ink transfer, and the influence degree of different dot area rate of cell is different. The doctor blade pressure and ink viscosity influence greatly gravure printing ink transfer.

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