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How to control color reproduction in the printing process of color-printed aluminum foil packaging bags

Many aluminum foil bag manufacturers know that in the process of making color-printed aluminum foil bags, there are many variables that affect the image quality of color-printed aluminum foil bags. So, how to control the color reproduction in the printing process of color printing aluminum foil bags? Please see below for details. [Printing aluminum foil packaging bags] In order to better control the color reproduction during the printing process of color printing aluminum foil bags and make up for the adverse effects of some variables, the printing machine needs to adjust three parameters: the temperature of the inking device, the amount of ink supply and the amount of water supply. To control the color reproduction during the printing process of color-printed aluminum foil bags, the printing press needs to adjust the temperature of the inking unit. Some printing presses are equipped with or optional inking unit temperature control device. During the inking process, the ink channeling roller both rotates and moves, so its temperature rises the most. When controlling the temperature, cooling water is generally introduced into the axis of the ink channeling roller to uce the temperature, so that the surface temperature of the ink roller remains stable. , so as to ensure a stable ink supply. In some printing machines, in addition to the ink channeling roller, cooling water is passed into the ink fountain roller to cool down. To control the color reproduction in the printing process of color-printed aluminum foil bags, the printing machine needs to adjust the ink supply amount. The density of the solid ink on the surface of the printed image directly affects the quality of the reproduced color. The density of the solid ink is affected by the amount of ink supplied (the thickness of the ink layer on the surface of the printed image). The solid density also increases as the thickness of the ink layer increases. After a certain point, the solid density will not increase with the thickness of the ink layer. The amount of ink supply (the thickness of the ink layer) can be adjusted according to the quality information of the control strip on the printed image surface. To control the color reproduction in the process of color printing aluminum foil bag printing, the printing machine needs to adjust the water supply amount and the amount of water in the offset printing plate must be controlled. The amount of water should vary with the printing speed of the printing machine, the amount of ink supply, etc., to ensure the balance of ink and water, so that the printed image is not blur, the color saturation is good, and the plate is not smea. The adjustment of the water volume is achieved by changing the rotational speed of the water bucket roller. food bags, food packaging bags

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