Computer color matching applications and user benefits

Nowadays, the average factory believes that more or less of the work will be done on inks, but not all of them will be done on computers. Traditional coloring methods rely on continuous experimentation and experience to accumulate and generally consume considerable amounts of money. The time cost and materials; In addition, if people work, the accuracy of the formula is usually difficult to predict, the commonly used colors may be well equipped in a few hours, the special colors may be transferred for a whole day, but also not come out, computer color Can solve this kind of problem very accurately.

The principle of color matching is based on the phenomenon of color, which is caused by the absorption and reflection of light. When the pigment encounters light, it will have different degrees of absorption and reflection. The wavelength of the reflected light determines what the eye sees. Color, and when calculating the ink formula, there are two basic values: K (absorption of light) and X (reflection of light), and R (spectral reflectance) to calculate the formula.

Before the color match, there must be a database of inks, in which the K and X values ​​of the colors need to be recorded in detail. When the colors are to be matched, the computer will combine the K and X ratios of the individual inks according to different percentages. In order to get the most suitable combination of the K and X ratios of the desired color, computer color matching is not 100% completely compatible with the actual situation, because it is not only related to the system level, but also to the user's effort. Time is related to the fact that computer coloring can save a lot of manpower and material resources compared to manual color matching, but it cannot be overestimated.

The first step in computer color matching is to establish a database of ink data. Each color must be black, white, and then ink. The values ​​of K and X should be measured. The next step is to identify the database. The accuracy of one's own, because the accuracy of the database will completely determine the formula effect of color matching, the database will not be accurate, they can not call the correct color, after the identification can begin to do some preliminary color formula, in general, with artificial formula However, the computer will consider every single color ink, so all the possible formulas will be found out and the selection work will be carried out again. However, the problem often arises in mass production. The reason why the colors are different from those in the beginning is that the preliminary formulas are all obtained in the laboratory. Therefore, the environment cannot be as simple as in the laboratory during mass production, thus affecting the formula effect. Therefore, it is necessary to make a recipe correction, that is, the amount of ink produced will be sent back to the computer for correction based on the existing formula, and the correction process will also be stored in the computer for future use. Also tune into the formulation shall regularly do the test.

The general manager of the speech also mentioned that a good computer formula ink must meet the following conditions:

1. Can be applied to various types of printing methods, such as: lithographic, flexible, screen, etc.

2. Can be applied to a variety of materials to deploy.

3. Consider the material of the printed material.

4. The possibility of ink reuse.

In terms of user benefits, according to its experience, the use of computer formulas can save users about 10% to 20% of the cost, and the initial formulation time is nearly double that of manual deployment; reducing ink inventory , Save space; Reduce the number of color modifications about 50%; The remaining ink is almost completely reused; Shorten the time for the machine tone to modify the color; Improve product quality, fewer customer complaints and returns;