Close contact with printing outlets (1)

As we all know, people in the printing industry have had more or less contacts and outlets, and it is essential to have a wealth of outlet technology. Let us come together to get to the network...

First of all, to uncover the first veil of the outlets and to initially understand outlets

What is an outlet?

Dot: A basic printing unit that constitutes a continuous tone image. The contrast between the picture element and the blank on the printed matter achieves the effect of reproducing the continuous tone. According to the method of screening, it is divided into AM outlets (AM outlets: the level of the image is represented by the size of the dots, the spacing of the dots is fixed, the size of the dots is changed), and the FM outlets (FM outlets: the density of the dots is not the size of the dots. The level of the representation image)

Learn more about the role of outlets?

The outlets are the basis of the printing and copying process, and they are the basic units that make up the graphic and text. The functions of the outlets are:

1) The tasks of coloring phase, brightness and saturation in the printing effect;
2) It is the smallest unit of sensory fat and water repellent, and it is the basic element of image transmission;
3) In color synthesis is the organizer of image color, gradation, and outline.

Do print design has to pay attention to and master: how to identify the number of outlets?

The outlets are the basic units for realizing that printed products can reflect the level of the publication surface and the level of lightness (darkness). It plays a role in determining the print color, gradation, and image outline in printing. Therefore, when the plate is made, only the dot size is accurate to faithfully reproduce the original color, ensuring that the printing process achieves good results.

Because the degree of shade of the printed page is expressed by the size of the dot, the dots of different sizes are commonly referred to as “becomes” in the process. Only with an accurate understanding of the concept of the dot number, can we better use dots to print the prints closest to the original color. Therefore, understanding the number of outlets is the knowledge that print operators and quality inspectors should master. There are two ways to identify the dots:

One is to use the density meter to measure the dot density of the dot, and then converted into the dot area percentage, such as: the dot density of the dot is 0.3, the dot area is 50%, this method is more scientific and accurate;

Another method is to use a magnifying glass to visually measure the ratio of the dot area to the blank area. This method is more intuitive and convenient, but due to experience, the error is large, specifically:
The identification of the number of points within 50% of the dots is based on the number of black and white dots that can accommodate the gap between the two edges. Two on the opposite side

Within the gap between black dots, three equally sized black dots can be placed, which is a 10% dot;

If within the distance between two outlets, it can accommodate two equally large outlets, called 20% outlets;