1. The effect of the smoothness of the surface of the paper on the gloss of the print.
In order to make the printed product mirror-reflective, the color is bright and the gloss is good, and it must be printed on a smooth paper. Paper with a rough surface is difficult to make the print shiny. Even if the flatness is good, capillary pores are formed between the paint particles of the paper, and the permeability of the binder is large, and a product with high gloss is still not obtained. The surface smoothness of various papers is different, and the smoothness has a great influence on the gloss of the finished product. The paper with high smoothness has good contact speed with the ink, which can ensure the complete reproduction of the dots and make the finished product have better gloss. Because the gloss of the ink film on the paper depends on whether the incident light can be specularly reflected. Only the paper with high smoothness can be specularly reflected after the ink film is leveled. On the other hand, if the smoothness is poor and the surface is rough, the printed ink film is uneven, and only diffuse reflection can be formed on the light, and the finished product is not glossy. Therefore, in order to obtain a better finished gloss, exquisite and advanced products must first use high-smooth paper for printing.
2. The effect of paper absorbency on gloss.
The ink absorption of paper actually refers to the absorption property of paper to ink binder. The absorption of paper is one of the main conditions for determining the amount of permeation. If the properties of the ink are certain, the absorbency of the paper is large, and the pigment of the ink layer overlaps thickly. The gloss is reduced or even dull. The coarser the paper, the larger the fiber gap and the stronger the absorption capacity of the binder. When the binder is not dried, most of the fibers are absorbed by the fibers, and a part of the binder and ink particles adhere to the surface of the paper, losing the proper leveling property and failing to form a smooth ink film layer. The product is dull. For coated paper (copper paper), there are two main reasons that affect the ink absorption: one is the variety and material used in the paint. The lower the ratio of adhesive to pigment, the higher the paper's absorbency for the ink. At lower coating concentrations, the adhesive and water in the coating easily penetrate into the thick paper, reducing the amount of adhesive in the coating and increasing the absorbency of the ink. Second, the pigment variety and particle fineness in the paint are also related to ink absorption. The finer the particles of the pigment, the less the gum in the coating is easily transferred to the paper base. The pigment particles are coarse, the particle gap is large, and the absorption of the ink is also large, and it is difficult to obtain a desired gloss effect in the finished product.
3. The effect of the gloss of the paper on the gloss of the print.
The gloss of the paper itself has a considerable effect on the gloss of the finished product. The gloss of the surface of the coated paper depends mainly on the brightness-increasing material used in papermaking and the processing precision of the paper. The light-increasing materials are aluminum stearate, paraffin wax, insect wax, etc., and the finishing method is super calendering. The paper processed by the above method has a smooth plane, and itself forms a specular reflection (unidirectional reflection) property to light, and a higher transparency ink is printed, and the finished gloss effect is better.
4. The effect of paper strength on the gloss of the print.
The paper has low strength, heavy powder and hair loss. When printing, the adhesion between ink and paper is not high, and the gloss of the printed product is low or even dull.
5. The effect of the pH of the paper on the gloss of the print.
The pH of the paper affects the drying speed of the ink film, and the drying speed of the ink film affects the gloss of the printed product. The alkaline paper can accelerate the drying of the ink film, thereby relatively reducing the penetration time and the amount of penetration of the binder, so that the gloss of the printed product is better; the acid paper is second.
Plantation shutters are a traditional window decoration often found in buildings such as farmsteads, estates or villas. This type of window consists of many adjustable wooden boards arranged horizontally or vertically, which can be opened or closed as needed to adjust indoor light and ventilation. Plantation shutters not only serve a practical function but also add to the beauty of the building, creating an elegant and classic atmosphere.
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