The influence of cell capacity on the ink transfer of the anilox roller

Anilox rollers are often used in the printing industry. When it comes to anilox rollers, it is inseparable from the cells. In fact, the amount of cells has a certain effect on the ink transfer of the anilox roller.

Anilox rollers are often used in the printing industry. When it comes to anilox rollers, it is inseparable from the cells. In fact, the amount of cells has a certain effect on the ink transfer of the anilox roller. The details are as follows

   Cell capacity: Cell capacity refers to the amount of ink that the anilox roller can hold per unit area under normal conditions. The unit is BCMin2 (1010μm3/in2). The volume of the cell is related to the depth and the degree of opening. When the volume of the cell is constant, the depth of the cell is inversely proportional to the opening. Generally speaking, the depth of the cell is 23%~33% of the opening (that is, the opening of the cell is 100μm, then its depth is 23-33μm), and the ideal is 28%.

   The size of the cell capacity has a great influence on the dot increase in printing. If the cell capacity is large, the amount of ink transferred will be more, and the dots will easily increase; the cell capacity is small, and only a small amount of ink will be transferred to the substrate during the printing process, which is beneficial to prevent the dots from increasing and ink flying, ensuring Printing quality. Therefore, the cell capacity should be as small as possible while meeting the ink transfer requirements. This also confirms that the 60° arrangement of the regular hexagonal anilox roller is the best. This arrangement allows more cells of equal volume per unit area to be arranged, and the cells can be made smaller when the same amount of ink is transferred. some.

   The number of lines of the anilox roller: The number of lines of the anilox roller refers to the number of holes per unit length along the axis of the anilox roller, which determines the uniformity and ink transfer volume of the anilox roller.

   The higher the number of lines of the anilox roller, the closer the ink layer on the anilox roller is to the “continuous” state. In addition, the number of lines of the anilox roller is directly related to its capacity, so it has a very important influence on the amount of ink transfer. When the number of lines of the anilox roller increases, the opening area of ​​the ink receiving hole decreases and the capacity decreases, so the ink transfer volume also decreases. It can be seen that the higher the number of anilox roller lines, the smaller the ink transfer volume.

   In addition, the number of lines of the anilox roll determines its own scope of application. Generally speaking, when printing large-area solid color blocks or images that are not too demanding, consider using a low-line number anilox roller: For halftone or color printing, a high-line number anilox roller is required. In order to ensure that the opening area of ​​the ink hole is smaller than the smallest dot area on the printing plate, thereby reducing the increase of the dot.

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