During the embroidery thread dyeing process, it is common for the color to appear correct but then be rejected during bulk coloring or by the customer. Why does this happen? First, we need to understand a concept.
The principle of embroidery thread color change:
There are two situations of color change:
We call a pair of colors that appear under a certain light source, complementary colors. However, the colors may differ under a different light source, which is called "light source color change".
When comparing two color samples under the same light source, one observer may perceive it as predominantly red while another observer perceives it as predominantly green, which is called "observer color change".
When a color is being paired, if the chosen dye is of a different category or hue than the standard sample dye, color change may occur. Therefore, the probability of encountering color change during color matching is high.
When matching the color of heavy duty embroidery thread, a fixed light source must be used.
Remember to use the confirmed sample as the standard for bulk coloring. Otherwise, the color reproducibility of the bulk will not be guaranteed.
Analyzing and predicting color changes is one of the main functions of the computerized color matching system.
It is necessary to understand the basic theory of color and color matching. It must be clear that the application of the computerized color matching system is to assist us in color matching.
Matters needing attention in the confirmation process of embroidery thread color matching:
First, use the computerized color matching system to analyze the data and combinations of specified dyes, which require accumulation of dyeing data by the factory in normal times.
Color matching personnel must remember the color changing status of the selected dye combination. If a severe color change of a certain dye combination is discovered during the sampling process, time should not be wasted and a corresponding confirmation can be made if the color difference is within the standard.
According to the analysis of this color matching expert, a certain proportion of people have distinguishing eye characteristics that differ from those of most people. If such people are involved, color matching personnel will encounter difficulties in the event of color change.
Ensure consistency in light source conditions and observational conditions.
Embroidery thread color discrimination ability includes:
Knowledge of color systems and color language; color discrimination ability testing; color deviation training testing; eye type testing; understanding of color value principles; and color matching training.
Analysis of the reasons for color change in embroidery thread:
Light source color change.
Observer color change only occurs when a pair of colors undergoes light source color change.
The color changing situation is the biggest problem for color matching personnel. In theory, each person's feeling towards the color light may have varying degrees of differences. Among ten people, about one to two people will have greater differences in their perception of color light. Therefore, these individuals may easily conflict with others during color matching.
The influence of residual image of embroidery thread on consecutive color discrimination:
Commonly referred to as "complementary colors", yellow and purple, orange and blue, red and green, and white and black are each a pair of complementary colors.
When a person stares at an object for more than twenty seconds, after the object is removed, the complementary color of the object's color will remain in the person's eyes for more than thirty seconds, thus affecting the color judgment of color matching personnel.
When judging color, pay attention to the consistent background color and place the sample in the center of the background color.
The surrounding environment for color matching should use a non-color series of white, gray, and black to prevent the impact of complementary colors from the environment.
When judging colors consecutively, start from the lighter colors and move towards the darker ones to avoid influencing the judgment of color matching personnel with residual complementary colors.
Matters needing attention in the embroidery thread color matching environment:
The light source must be bright enough. Insufficient light will affect color matching efficiency, especially for darker colors.
The material and texture should be in the same direction. When the material's texture direction is different during color matching, the color saturation and color light may be misjudged.
The background color must be consistent. Inconsistent background colors may affect color matching personnel's judgment, so the sample should be placed in the center of a background color of the non-color series of white, gray, and black.
The comparison sample and the sample should have the same temperature. When the temperature of the color sample is different from that of the sample being judged, it will affect color judgment. If the color sample needs to be dried, it should be cooled down to the same temperature as the sample being judged for color matching.
When consecutively judging colors of embroidery thread, pay attention to the influence of residual images.