Reasonable Arrangement of Color Sequence of Monochrome Offset Printing Printing

In general, the four-color machine printing color sequence is a reasonable arrangement: black, blue, red, yellow, but also according to the order of color yellow, red, blue, black printing. When the four-color printing machine prints, the printing interval between color and color is short, the ink does not have drying time, it is a superposition and printing mode of warm and wet, and the printing interval between color and color is longer when the monochrome machine is printing, and printing is second. In the case of color, the first color is already dry, so it is a wet-stacked overprinting method. Due to the different overprinting methods, the color sequence arrangement is also different. There are many color sequential arrangements in a monochrome machine, but the specific choice of color sequence can be considered from various aspects as follows:

1. According to the brightness of the three primary colors to arrange the color sequence must first print dark, bright color after printing, that is, blue, black and India, red, yellow after India.

2. According to the three primary colors ink transparency and hiding power arranged color sequence, poor transparency of the blue, black print, good transparency, yellow and red ink after printing.

3. According to the size of the text area to arrange the color sequence is to print a small picture, after printing full version or large format graphics.

4. According to the characteristics of the manuscript, a color picture based on warm colors should be printed with blue or black first, while a color picture with cold tone should be printed with red or yellow first.

5. Considering overprinting, the more difficult color of the overprint is printed first. In general, landscapes are printed in blue and yellow, while portraits are printed in red and yellow.

The printing color sequence recommended when printing four colors using a monochrome machine is: blue, red, yellow, and black. In this way, as long as the first two colors are overprinted accurately and the color tone is good, the two-color overprint behind them will not be too inconvenient. obvious. The operator should pay attention when changing the ink. In order to maintain the purity of the ink, it is best to add a bit of the next color ink to be printed soon after the cleaning of the natural ink is completed or completed, and then clean it again. Especially when dark ink is used for light color ink, it is better to clean the machine twice.