When printed, it is manifested as a series of dots of different sizes. When the dots of each color are arranged at a certain Angle, all printable colors can be visually produced. In printing, the arrangement of dots of each color is called a screen.
1 Network cable frequency
The screen is composed of dots of each color arranged at a certain Angle. Then the number of lines arranged per unit length is the network frequency.
What is the frequency of the network cable per inch? "Jijie Nanling??" /p>
2 Color Mode
The RGB mode is an additive mode. It appears gray when the three hues of RGB are equal. Most visible light is obtained through the color gamut range of RGB.
The 2CMYK mode is a subtraction mode. CMY and RGB are complementary colors. Since CMY cannot form black in practice, black needs to be added externally to create CMYK.
The color gamut range of the CMYK mode is smaller than that of the RGB mode, so its colors are far less vivid than those of RGB.
3 Spot colors
Spot color is a type of pigment used in the printing process and is printed only once. It can be a color within the CMYK color gamut or a color outside the color gamut.
Spot colors can be used in the following circumstances:
(1) In single-color or two-color printing tasks, in order to save funds.
(2) When designing or printing logos or other graphics that require precise color matching.
(3) Print special color inks, such as metallic colors, fluorescent colors or pearlescent colors, etc.
3 Color Management
1. Select the display from the drop-down menu.
2. Select the printer from the printer drop-down menu.
3. Select the Color Management System (CMS) from the engine's drop-down menu.
4. From the expected mode menu, the following options are available:
(1) Sensory (image)
(2) Saturated (image
(3) Contrasting colors
(4) Absolute contrasting colors
If you want to print out the colors on the screen, you can select the option of "Simulate printing colors on the Screen".
4 Document Information
The document information contains very important printing information such as objects, colors, and fonts. Before the document is delivered for printing, save the document information first, then view and print it with any text editor, and hand it over to the printer together with the document.
Five color divisions
When printing color documents on a printing press, they must first be decomposed into CMYK primary colors and any spot colors to be applied. This process is called color separation.
1PostScript Printer Description File (PPD)
This file contains relevant information about the output device, including available page sizes, resolutions, available network frequencies and screen angles, etc.
Bleeding refers to the amount of work that overflows outside the printed border or the cut mark and trim mark.
The default amount of bleeding is 18 pounds. The set amount of bleeding can range from 0 to 72 pounds.
2 Color separation
If there is no spot color, it will be printed in CMYK four colors. When there is a spot color, select the "Convert to Process Color" box, and the spot color will be converted to CMYK four colors for processing. Otherwise, it will be printed five times.
3. Set the network frequency
The network frequency can be selected based on the quality of the output.
4 Traps
See Section 3 of Chapter 10.
5 Overprint
By default, when printing top-level objects in Illustrator works, the colors of lower-level objects are cleared and only the colors of top-level objects are printed. When the alignment is poor, white leakage may occur.
When the top-level object is black, you can choose to overprint, that is, not clear the color of the underlying object.
