The allocation of ink hue is an important work before printing, and it is also a very abstract work.Simple color materials three primary colors, yellow, magenta, green can be deployed into red, orange, yellow, green, blue, purple and other dozens of colors. In the actual deployment process, only by the three primary colors of ink can not get the required color, this is because the ink manufacturers selected pigments, dyes simply can not meet the international standard of the three primary colors saturation, color concentration, brightness, etc., the third grade of the original color ink can only be tea gray, rather than black. Therefore, inks and auxiliaries such as black ink, white ink and diluent can not be separated from the actual color mixing process.

(1)Ink mixing process

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

2.The sample and customer requirements, process requirements, color requirements, ink use requirements for verification, each color group color order arrangement, product print number, ink dosage, the deployment of the main tone to in-depth understanding.

3.The diluent is related to the solubility of the ink resin, the temperature deviation and the ratio of the diluent, such as the temperature is high, the diluent should be slow dry. At the same time, the dissolution effect and volatilization rate also play a very important role in the printing quality of the product, so the appropriate diluent should be selected according to the relevant conditions.

4.Preparation of ink and diluent should be done before printing.

5.In the short time of startup overprinting, it is necessary to make proper use of the original color ink according to the color match, and grasp the proportion, and adjust the hue of each color group of ink according to the proof, so that the printing speed is stable, and a little adjustment can achieve the proof effect. In normal printing, the batch control color is the same, it is more difficult for ink mixing personnel, such as the amount of diluent added to affect the color effect to different degrees, which requires ink mixing personnel to have a strong sense of responsibility.

(2)Notes for mixing ink

1.In the case that the tone meets the requirements, the fewer color types of ink used, the easier to deploy and control. Can use intercolor ink do not use multi-color ink, according to the subtractive method, the more color used in the spot color ink its saturation will be lower, the black component will increase accordingly.

2.Confirm the main tone and the auxiliary tone of the printed matter, the main tone ink as the basic ink, other inks as the toning ink, the basic ink as the main ink, the toning ink as the auxiliary, so that the deployment of spot color ink will be faster and more accurate.

3.When mixing proofing and sample inks, try to use the same paper as the paper used for printing, because the color of the ink will change with the difference in paper absorption and other factors. Only by maintaining a stable material can we avoid color errors caused by the difference in paper.

4.Adjust the spot color ink, first of all to adjust the saturated color of the ink, play a thin sample, confirm that there is no lack of main tone and auxiliary tone, and then adjust to the required spot color with diluent.

6.Mastering the allocation of spot color ink, the control of the amount of ink, the full use of leftover ink, etc., can not only save materials, but also improve personal quality and technical level. An excellent ink mixer plays a very important role in the development of new inks, color innovation and ink cost reduction.