Printing and Screening Process - Dot Shape

The dot shape will affect the final copying effect. For example, when a square dot is used, if the lines are arranged along the 45° direction, the black and white dots just form a checkerboard pattern at the 50% dot. In this way, it is easy to determine the relative area percentage of square dots based on the dot pitch, which is more sensitive to the transmission of manuscript layers. The rhythm of the screen display of diamond dots is particularly soft, and the level of reflection is also very rich. It is particularly suitable for characters and landscapes. When circular dots are used, the highlights and midtone dots in the screen are not connected to each other. Only when they contact each other, the value of the dot expansion below the middle tone of the screen is very small, and the intermediate tone level can be preserved better.
Source of information: pack.cn