Chocolate Boxes For Black Truffles The percentage of dots in the printing process

Chocolate Boxes For Black Truffles The percentage of dots in the printing process

Dot is the realization of printing can reflect the level of publishing, color level adjustment of light and shade (light and shade) of the natural basic unit. It plays a decisive role in printing printing color, level and image contour. Therefore, when making plates, only the dot size is accurate to faithfully reproduce the original color, to ensure that the printing process to achieve better results. Because the intensity of the printing page is expressed by the size of the dot, the dot of different size is commonly known as "Cheng" in the process. Only by accurately understanding the concept of dot percentage, can we make good use of dot printing the closest color to the original manuscript.

Therefore, to understand the percentage of dot is the knowledge that printing operators and quality control personnel should master. This is to summarize several dot percentage as follows: identify the dot percentage within 5 percent, is according to the gap between the opposite side of the black can accommodate the same number of black dot to identify. That is, in the gap between the two black dots on the opposite side, three black dots of the same size can be placed, that is, 1 percent of the dot; If in the distance between two dot, can accommodate two of the same size dot, called 2 dot; If 1.5 dots of the same size can be placed between the two dots, it is called 30% dot; If between the two dots can accommodate 1.25 dots of the same size, it is called 40% dot; If one dot of the same size can be accommodated between the two dots, that is to say, the black dot and the white dot account for half of the unit area, that is, five points. The identification of more than 5 points is measured by how many white points of the same size can be accommodated between the opposite side. From the point of view of dot arrangement law, the number of dot contained in the spacing of two white dots, exactly 6 and 4 are the same; 70% is the same as 30%; 80% is the same as 20%; 90% is the same as 1%.

The above situation shows that the so-called dot percentage is the percentage of the unit area. For example, 1 percent of the network is 10%, 2 becomes 20%, and so on, 100% is the field layout. According to the rough analysis of positive dot arrangement, if the black dot is larger than the white dot, it is more than 50% dot. If the black dot is less than the white dot, it is less than 5 percent dot. The larger the dot ratio, the thicker the ink, and the lighter it is. The size of the dot area determines the change of the layout level. Usually, the level on the picture is divided into three levels of tone levels, that is, the high profile level is composed of 1 to 3 points, so that the bright part of the picture is formed. The intermediate level shows the transitional parts of the picture, usually composed of 4 to 6 percent dot. The thick dark picture composed of 7 to 9 percent of the dot is a low-key level. The brightest spot on the printing surface, that is, the highlight part is less than 1 percent of the dot.

To sum up, only the accurate understanding of the percentage of the dot, in order to make good use of the dot change rule, produce in line with the original printing plate, printing accurate color, quality satisfied color printing products, which is also the goal of quality management.