The customer's dissatisfaction with the printing color is the first major cause of rework. In fact, the lack of necessary color knowledge and poor communication between customers and printing plants are the root of the problem. Therefore, if we want to solve this problem thoroughly, we must start from the above aspects. Obviously, sometimes we don't know how to improve the problem of "poor communication". To solve this problem, we should know eight color knowledge: first, color consistency. An important way to ensure color consistency is to allow customers to observe color proofs and print proofs under standard lighting conditions and obtain their approval. In order to reduce the change of color in the process of transmission and reproduction, the printing industry has specially formulated the standard color observation conditions. It is very important to check the color on the observation pool, because the lighting conditions and surrounding environment when we check the color will affect our perception of color. It is very important to check the color on the observation pool, because the lighting conditions and surrounding environment when we check the color will affect our perception of color. If there is no standard observation pool, we can also watch the sample in indirect sunlight. 2、 The influence of lighting. When we observe the color under different lighting conditions, we see different effects. Another problem we need to pay attention to when we observe color is metamerism. The so-called "metamerism" is when two samples under a certain light source present the same color, but in another light source, the color is different. The main reason is that this kind of light source is a mixture of red light, green light and blue light, which can provide a stable and consistent observation environment for people. 3、 The impact of the surrounding environment. Do we observe whether the surrounding environment will affect the color when we print the sample? The near color, that is, the color similar to the observed sample or print sheet, can affect people's perception of color. This is the so-called "critical effect", which to some extent reflects the importance of using a neutral environment in the observation of samples. 4、 Paper. Subtraction is a method of mixing yellow, magenta, tone and black ink in a white environment (usually paper). In this process of color reproduction, there is an element that will have a significant impact on the printing effect of color, that is, paper. 5、 Spot color. Each spot color corresponds to a special ink (except yellow, magenta, tone and black), which needs to be printed through a separate printing unit on the press. There are many reasons for people to use spot color in printed matter, which highlights the brand image of an enterprise. Therefore, whether it can accurately copy a spot color is of great importance to customers and printing plants. In addition, when the original design of the color requirements beyond the Yellow cyan black can reach the gamut range, we can also use spot color to supplement. 6、 Convert color to CMYK. When we convert the color of an image from RGB to CMYK, there are usually two methods to generate halftone dot of black ink, one is background color removal (UCR), the other is gray component substitution (GCR). Which method to choose mainly depends on the number of yellow, magenta, tone and black ink to be printed in the image. Gray component substitution is similar to background color removal. Black ink is used to replace the gray formed by color ink overprinting. However, the difference is that the gray components within the whole range of steps can be replaced by black. The image processed by gray component substitution method is more stable in the printing process, but its effect largely depends on the printing machine operator's ability to adjust the color.7、 Professional skills. The reason why we think color is difficult to describe is mainly because it is a feeling, which can not be described in words. When we have to use words to describe color, we often use vague words such as "flat", "muddy", "too warm" or "too cold". Therefore, we must use professional skills when talking about color, which can save you a lot of time and money. 8、 Printing is not a "perfect match" process. What is replication? Replication is not an exact match, but infinite proximity. Printing is not a complete matching process, mainly because there are many color reproduction systems in the color reproduction process. The same is true for proofing and printing. The gamut (or the number of colors that can be reproduced) becomes smaller when we compare what we see with what the eye can see with what the camera can capture and what the printer can copy.
Dongguan Beite packaging materials Co., Ltd. - located in Dongguan City, the world's manufacturing city, is a subsidiary of Beite packaging (China) Co., Ltd., with a plant area of 6000 square meters. It is a flexible packaging enterprise integrating R & D, production and sales. It has a complete set of domestic advanced production equipment, a scientific and humanized management system and a group of experienced technical personnel For backing, to provide customers with quality products and first-class service.
The company produces composite bags, roll film, fruit bags, aluminum foil bags, suction mouth bags, self-supporting bags, zipper bags, anti-static bags, special-shaped bags, etc., which are suitable for the internal and external packaging of food, daily chemicals, electronics, toys, medicine, cosmetics, industrial products and other industries.
We uphold the integrity of cooperation, good quality, good service business philosophy, won the industry's approval, products sold to all over the world; welcome friends from all walks of life to inquire, visit our factory to investigate guidance and business negotiations.