Basic Screening
Screening (or halftoning) is a process of images and color reproduction in printing. To complete this process, the image or color should be broken down into a pattern of dots called halftone screens (halftone screen). Simple application of this technique is approaching the level of gray with a pattern of black dots on a white background. Shades of color can be approached if the pattern of four-color dot-cyan, magenta, yellow, and black are used.
These points are applied in a proper setting and proportions. When the register, cyan, magenta, yellow, and black dots will form a rose pattern that is a "mixed" together to give a great impression with a number of different colors.
Halftone dot-produced by rasterization process of photographing the original image through a screen that is
The main function of the raster image processor such as RIP HQ. Light reflected from the image creates a point in every hole in the screen. The size of the dots on each particular point is proportional to the amount of light coming through the screen, the number of lines per inch that make up the screen to determine fineness of the point.
Each square in the grid is called halftone cells, each cell containing halftone dots, which increases as the intensity of color, which enhances the image of the picture. A point can take anywhere from 0 to 100 percent of the halftone.
In a black-and-white image, for example, 0-percent point of the white area of the picture, the point is 100 percent black areas, and intermediate points dariukuran create the impression of a gray area. Color images work the same way, except that three or four grid is superimposed over the images at different angles. Each grid contains a single color (cyan, magenta, yellow, or black, for example)
and called the film separation (separation film).
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