How to distinguish the number of printing plate ou

2022-07-30
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How to distinguish the number of printing plate dots

in order to ensure that the heat insulation performance of the printing process is better than that of polystyrene foam, we must ensure that the dot size is correct during plate making, so as to truly realize the original color. Point energy couple is the basic unit that realizes the layering of the print layout and the sensitive boundary of color gradation. It plays an important role in determining the color, layering and image outline of the print

because the thickness of a printed page is expressed by the size of the dots, dots with different sizes are commonly known as dots in technology. Only by correctly understanding the concept of dot ratio, can we better use dot printing to produce prints that are closest to the original color. Therefore, the percentage of familiar points is the knowledge that printing operators and quality inspectors should grasp. Several dot percentages are summarized as follows:

the percentages of points within 50% are identified according to the number of equal black spots that can be accommodated in the open space between the two black spots on the opposite side. That is, in the open space between the two black dots on the opposite side, three black dots of equal size can be placed, that is, 10% of the dots; If two points of the same size can be accommodated within the interval between the two points, it is called a binary point; If 1.5 equal sized dots can be placed between two dots, it is called 30% dots; If 1.25 dots of the same size can be accommodated between two dots, it is called a 40% dot; If one point of the same size can be accommodated between the two points, that is to say, the spot per unit area is the precision equipment for the process performance test of metal sheet and strip, with half of the spots and half of the white spots, equal to 50%. The discrimination of more than 50% points is measured by how many white points of the same size can be accommodated between the two white points on the opposite side. From the point arrangement law, the number of points contained in the space between the two white points is exactly the same between 60% and 40%; 70% and 30% are the same; 80% and 20% are the same; 90% is the same as 10%

the above situation shows that the so-called dot percentage is the percentage in unit area. For example, the percentage of 1 is 10%, the percentage of 2 is 20%, and so on. 100% is the field layout. According to the rough analysis of the positive point arrangement, if the spot is larger than the white point, it is more than 50%; If the spot is smaller than the white spot, it is less than 50%. The larger the number of dots, the thicker the ink on the print layout, and vice versa. The size of point area determines the change of layout level. Generally, the layers on the screen are divided into three levels, that is, the high-profile level is composed of 1 to 3 points, so that bright parts are formed on the screen. The middle tone level represents the transition part of the picture, usually composed of 4 to 6 dots. The thick and dark pictures composed of 7 to 9 dots are low-key. The brightest place on the printing plate, i.e. the highlight department, is less than 10%

When exploring the new development path of plastic granulator technology, it is concluded that only by accurately knowing the percentage of points, can we make better use of the law of point change to make a printing plate that conforms to the original, and prepare color printing products with excellent color to meet the quality, which is also our pursuit of quality

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