Four-color printing and outlets

Four-color printing:

As long as the R+G+B tri-colors collide in proportion, more than 10 million colors can be generated. Why black? Why, it can produce black when R.G.B ratio is equal, but three inks can generate a color? From the economic point of view, it is not feasible. Actually, the use of black is very much in the design process. This is actually why we use four-color printing. There is another point: RGB generates black and direct deployment with ink. Compared with the black color, the former has a sense of emptiness, while the latter feels more immersive.

1. With the four-color principle, it is easy for people to accept much more. It is equivalent to the four films at the time of output. It is also equivalent to four channels of cyan, magenta, yellow, black (C, M, Y, K) in PHOTOSHOP. Channels. The modification of the channel when we process the image is actually a change to the film.

2. Net\Network\Network\ Ping and Hanging. Mesh: Per square inch, the number of outlets, 175 meshes for common prints, 60 to 100 meshes for newspapers, depending on paper quality Special printing has a special mesh, depending on the texture.

Dot : sub-circle. Ellipse. Diamond. Square. Diamond-shaped. Frequency mesh. The above figure is composed of circular dot.

Net angle: The angle between the straight line and the horizontal line formed by the most closely connected dots. Above is 45 degrees.

Flat screen: The dots of the whole film are regularly distributed evenly and the same size, like a plane, no sense of layering. Above is the flat screen

Hanging net: the dot size is not the same, the mesh has a sense of layering, as shown below is 60 degrees