There are two types of ink rollers in printing presses: ink leveling rollers and ink inking rollers; as the name implies, ink inking rollers are used to equalize ink, so what about ink inking rollers? In addition to its function of leveling ink, it also has the following four major functions.
First, to provide power for the transfer of the ink roller. In all the ink rollers, only the ink inking roller is the driving roller. Driven by the gear, the ink inking roller drives the other rubber roller and plate cylinder under the action of friction The synchronous rotation ensures that the ink can be transferred to the printing plate synchronously by the plate roller.
Second, the ink is evenly distributed. When the ink roller rotates, it only rotates in the circumferential direction. The presence of the ink roller not only provides circumferential motion power, but because of its axial movement, it can Ink evenly.
Third, the adjustment of the amount of ink supply, because the graphic area of ​​the printing plate may not be all the same size, the bite may be large or small, and the ink supply of the ink roller needs to be adjusted according to the layout, that is, by adjusting the relative The starting position of the plate bite is achieved.
Fourth, reduce the effects of ghosts. What is a ghost? When the distance between the text part and the solid part is just within the diameter range of the ink roller, it is very likely that the effect will appear after the printing process. A light imprint appears on the solid part, which is the ghost image often used in printing. There are several ways to eliminate ghosting, and increasing the tandem amount of the ink roller, that is, its axial movement distance, is one of the effective methods.
The existence of each part of the mechanical part of the printing press has one or more functions. Only by constantly groping and summing up in our work can we be more familiar with and understand, and can flexibly adjust to make the ideal product. To create greater value for the enterprise.
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