Pre-printing process and precautions

The deployment of ink hue is an important job before printing, and it is also a very abstract job. Simple color materials, three primary colors, yellow, magenta, and blue can be assigned red, orange, yellow, green, blue, blue, purple and other dozens of colors. In the actual deployment process, the color obtained by the three primary color inks cannot be obtained. This is because the pigments and dyes selected by the ink manufacturers cannot achieve the saturation, color concentration, and brightness of the three primary colors of the international standard, and the three equal primary color ink phases. Plus can only be tea grey, not black. Therefore, black ink, white ink, diluting agent and other inks and auxiliaries are indispensable in the actual color adjustment process.

Dyeing process

1. Master the ink system, color, color saturation, viscosity, fineness and other indicators.

2. We will review the proofs and customer requirements, process requirements, hue requirements, and ink usage requirements. We must have a thorough understanding of the arrangement of the color sequence of each color group, the number of prints of the product, the amount of ink used, and the deployment of the main colors.

3. Diluent and ink resin solubility, temperature deviation and the ratio of diluent is related, such as high temperatures, the diluent should be slow-drying type. At the same time, the dissolving effect and volatilization speed also play a very important role in the printing quality of the product, so it is necessary to select the appropriate diluent according to the relevant conditions.

4. Prepare ink and thinner before printing.

5. In the short time of the boot printing, according to the collocation of colors, proper use of the original color ink, and a good grasp of the ratio, in accordance with the proofs for the preparation of each color group ink hue, so that the printing speed is stable, a little adjustment to achieve the proof effect . In normal printing, the batch control of the hue is the same, and it is more difficult for ink-transferring personnel. For example, the amount of thinner added will affect the color effect in different degrees. This requires the ink-transferring personnel to have a strong sense of responsibility.

Ink transfer notes

1. In the case where the hue meets the requirements, the less the kind of color of the ink used, the easier it is to configure and control. Can not be used between the color ink complex ink, according to the subtractive method, the more color the spot color ink used the lower the saturation, the black component will increase accordingly.

2, to confirm the main color of the print and the auxiliary color contained, the main color ink as the basic ink, other ink as the color ink, the main ink, color ink as the auxiliary, so that the deployment of spot color ink will be faster, more acurrate.

3. When deploying proofing and mock-up inks, try to use the same paper as the paper used for printing because the color of the ink will vary depending on factors such as the paper's absorbency. Only by maintaining a stable paper quality can you avoid color errors due to paper differences.

4. The use of ordinary white cardboard to make a sample or scratch, the thickness of the ink layer will directly affect the color of the ink, thin ink, the color is light, high brightness. In the field or network cable, wet or wet-press dry, the amount of sprayed powder is large or small, the flatness and whiteness of the paper surface, and the thickness of the ink layer will cause differences in the color.

5. To adjust the spot color ink, we must first adjust the saturated hue of the ink and make a thin sample. After confirming that the main color and the auxiliary tone are absent, use the diluting agent to adjust to the desired spot color.

6. Factors affecting spot color ink color include printing process, water volume, ink volume control, vehicle speed, and printing equipment, etc. Printing and its laws should be grasped to ensure product quality.

Mastering the deployment of spot color inks, controlling the amount of ink used, and making full use of the remaining ink will not only save materials, but also improve the quality and technical level of individuals. An excellent diverter plays an important role in the development of new inks, the innovation of color, and the reduction of ink cost.

Source: China Design Printing Network