Newspaper Printing In The Smoothness Of The Printing Paper Quality

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Print Network HC The so-called smoothness of paper is the paper's surface roughness. Paper smoothness is a very important performance index of paper, printing paper smoothness and smoothness is somewhat different, as discussed on the printing quality, printing paper here refers only to the smoothness.



Newsprint printing paper smoothness is all the lower, and its composition in the long fiber, the use of short fiber filled and appropriate pressure light processing, low surface smoothness. Currently Offset printing Newspaper production process has been widely used, offset by the principle of immiscible oil production, and its printing pressure is smaller than the stereotype, in order to get a good graphic quality, and must ensure that the paper has a good surface smoothness . Smooth surface of the paper with the production of newspapers, because the time stamping of contact for better ink transfer, access to high quality network, so are clear and full to reproduce on paper. With the press in recent years, the development and expansion of production scale color report on the paper surface smoothness requirements are also rising saries

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Dot is printed copy of the basic elements of tone, 50% under the 100LPI network, its diameter is only 0.2mm or so. If the surface smoothness of paper is poor, incomplete network so easily occur and cause deformation of the loss of a small network, affecting the level of picture quality reproduction and graphics, in particular fine-level representation would be severely affected. To make a complete image-level coordination of reproduction, we must ensure the network on the paper form to get clear and accurate. We have such experience, the paper's surface thirst becomes better, the higher its quality dot reproduction, clear and neat ideas. From the microscopic point of view, rough paper will be due the pressure of shortages at the hollow where the network can not fully transfer of ink to produce a certain degree of network deformation or even incomplete, the quality of the newspaper will be a very significant effect; paper smoothness high, medium and small dot on the printing process is not easy to lose, can effectively ensure the level of image-rich text, good color reproduction.



In addition, the higher the number the same lines, the picture level of the more abundant, while the higher number of hanging wires, the Coordination Office of the same diameter of the smaller outlets, which also need to have good surface smoothness of the paper not to print, Therefore, the number of hanging mesh smoothness and printing paper have magnitude correlation. However, control of the newspaper asked the mesh is not fixed. Newspaper printing needs better paper surface smoothness to maximize the number of hanging with the aim to ensure that the text of the copy image quality more precise. Newspapers print the same amount of money usually in 80100LPI about the paper surface smoothness to ensure the case, appropriately increasing the number of pictures hanging mesh is also a means to improve the quality of newspaper printing. That is good as far as possible using the surface smoothness of paper for newspaper production, may be appropriately increased hanged line to improve the quality of newspaper printing.



Color and black and white newspaper reported that compared the quality of the printed dot quality even more. Color newspaper stressed that a "color" words, to ensure that pages of pictures, titles, bottom net, color diagrams, and other important elements of quality, it is important to improve the quality of dot reproduction. The network is mainly used for black and white newspaper picture of the level of reproduction, color newspaper outlets for color, level, coordination is very important to reproduction. To ensure the quality of the image reproduction, color newspaper generally linked with the mesh is higher than the black and white newspaper, the paper quoted Zhang Pingqing color and higher degree requirements.



Newsprint front and back surface of thirst is also an important degree of poor performance, reduced front and back surface of thirst on the reduced degree of difference in the quality of newspaper-printing, the gap is very important. International 1910-89 standard front and back of the paper surface smoothness is also poor according to the old standard has been enhanced, A grade of newsprint required to reach 15%. In recent years, the major brands of newsprint in the surface roughness has been greatly improved, part of the paper is the difference between the negative surface smoothness has been much less than this value, double-sided color newspaper for the publication provides a very good condition.