Fourth, the ink usage calculation method affects the use of ink elements, the following three important:
(1) The type of edition can be judged as follows depending on the nature of the layout line:
1. Incorrect ink volume is 100% when printing in full version
2. 70% with white text
3. All have a pattern of 40%
4. 30% by network
5. 20% of Goethe's living type
6. Fine words occasion 15%
(2) Types of inks The tones, fluidity, adhesion, specific gravity, coloring power, transparency, etc. of the ink are all elements. In the same type of ink, the difference in the amount of ink used (by color), for When the same area is printed, its usage is roughly based on the following:
1. Black ink 100%
2. Olive ink 120%
3. Transparent ink 130%
4. Red, red, grass green ink 140%
5 opaque Zhu and Huang ink 80%
6. White ink 200%
(3) Types of paper The influence of paper on the amount of ink used is considerable, and the printability of paper is generally governed by factors such as smoothness, oil absorption, and transferability. In the experimental results, the difference in the amount of ink used was 25-50%, and sometimes even exceeded, due to the nature of paper.
1. Art paper usage is set to 100%
2. Calendered paper 130%
3. General mechanical coated paper 140%
4. Smooth carton paper 160%
5. Newsprint 180%
6. Thick book paper 200%
7. General carton paper 200%
8. Thick panel paper 200%
V. Post-printing processing and resistance considerations Many prints still need to be processed after printing, such as blending with vinyl or other coating, and the impact on color should also be considered. Can be affixed with transparent tape to simulate glazing effect colorimetric. The brightly colored printing ink is mostly made of organic pigments. It is easy for the ultraviolet light to act on the chemical. The printing ink factory may be required to indicate the resistance level of the ink to meet the needs.
Six, computer color matching The traditional color matching method of ink is mainly based on years of testing, experience and accumulation. The correctness and stability of the prepared color are often different from person to person, so it takes a considerable amount of time and material costs. In particular, special coloration is more difficult with manual deployment. But if you use computer coloring, you can solve it accurately and quickly.
The key to computer color matching is the accuracy of the establishment of the ink data database. The ink database must have the following data: a detailed record of the light absorbance and reflectance values ​​of the color, and then a calculation action for combining the combinations required to add the optical absorbance values ​​and the reflectance ratios of the individual inks in different percentages. When creating an ink data database, add white, add black, and then measure the absorbance and reflectance values ​​of the color in each color, and do database identification to confirm the accuracy of the color. The accuracy of the database determines the effect of the color formula, if the database does not guide the correct color. After the appraisal, you can start to make some preliminary color formulas. Generally speaking, if you use artificial formulas, you will fix only those colors. However, the computer will consider the characteristics of the first monochrome ink, so all possible Formulas that meet the needs will be found and then selected. However, the problem that is more likely to occur is that the ink color produced in mass production is different from the one originally obtained in the laboratory. The reason is that the operating environment cannot be as simple as in the laboratory when the ink is mass-produced, thus affecting the formulation effect. Therefore, it is necessary to formulate the formula again. The correction, that is, the amount of ink produced, is sent back to the computer for correction based on the existing formula, and the correction process is also stored on the computer for future use. The blended formula must also be tested periodically. This is a more complicated place than manual ink transfer.
I recently went to Hong Kong X-Rite company to carry out training on the computer color matching system, in this regard for the company's ink color matching system to make an overview.
X-Rite's newly developed color ink control system can be divided into three parts - one for the ink transfer system software such as INK-MASTER, Quick Ink, and one for quality control systems such as QA-2000 or QA-LITE software. Spectrophotometer.
INK-MASTER itself is used by ink manufacturers, and the printing plant is more suitable for QUICK-INK software. However, if the printer wants to use QUICK-INK, the premise is the ink itself. The ink supplier must have INK-MASTER. The printer's QUICK-INK can share the ink color data provided by its database. (Inform X-Rite that Toyo Ink has used this system)
The following sections will use the various software and machines required for INK-MASTER or QUICK-INK to make tables for distinction and explanation.
Establishment: The establishment of the color system should be based on the system, and the network operation is better, so the QA-2000 is more suitable.
Although the computer color matching system must spend more time in establishing the database, the actual production process application has higher stability than the manual color matching operation in terms of time efficiency and color quality. The average computer coloring time is 4.9 minutes, which is about twenty minutes or less than the 33.3 minutes of manual color matching. Computer color matching has a very outstanding performance in terms of timeliness. In the performance of color difference, the average color difference of the computer color matching is also smaller than the average color difference of the artificial color matching; the precision is better than the manual color matching. Computer color matching can replace traditional manual color matching on the technical surface, and it also has many additional functions for color management, which can help us save a lot of labor costs, but due to the variability of the actual environment such as the color identification environment, paper and ink Instability of the quality...etc. External factors greatly detract from the reliability of computer color matching, and finally still rely on manual determination. Therefore, it is recommended that the computer color matching system be regarded as an “auxiliary†manual color matching tool to achieve a perfect color matching. operation.
(1) The type of edition can be judged as follows depending on the nature of the layout line:
1. Incorrect ink volume is 100% when printing in full version
2. 70% with white text
3. All have a pattern of 40%
4. 30% by network
5. 20% of Goethe's living type
6. Fine words occasion 15%
(2) Types of inks The tones, fluidity, adhesion, specific gravity, coloring power, transparency, etc. of the ink are all elements. In the same type of ink, the difference in the amount of ink used (by color), for When the same area is printed, its usage is roughly based on the following:
1. Black ink 100%
2. Olive ink 120%
3. Transparent ink 130%
4. Red, red, grass green ink 140%
5 opaque Zhu and Huang ink 80%
6. White ink 200%
(3) Types of paper The influence of paper on the amount of ink used is considerable, and the printability of paper is generally governed by factors such as smoothness, oil absorption, and transferability. In the experimental results, the difference in the amount of ink used was 25-50%, and sometimes even exceeded, due to the nature of paper.
1. Art paper usage is set to 100%
2. Calendered paper 130%
3. General mechanical coated paper 140%
4. Smooth carton paper 160%
5. Newsprint 180%
6. Thick book paper 200%
7. General carton paper 200%
8. Thick panel paper 200%
V. Post-printing processing and resistance considerations Many prints still need to be processed after printing, such as blending with vinyl or other coating, and the impact on color should also be considered. Can be affixed with transparent tape to simulate glazing effect colorimetric. The brightly colored printing ink is mostly made of organic pigments. It is easy for the ultraviolet light to act on the chemical. The printing ink factory may be required to indicate the resistance level of the ink to meet the needs.
Six, computer color matching The traditional color matching method of ink is mainly based on years of testing, experience and accumulation. The correctness and stability of the prepared color are often different from person to person, so it takes a considerable amount of time and material costs. In particular, special coloration is more difficult with manual deployment. But if you use computer coloring, you can solve it accurately and quickly.
The key to computer color matching is the accuracy of the establishment of the ink data database. The ink database must have the following data: a detailed record of the light absorbance and reflectance values ​​of the color, and then a calculation action for combining the combinations required to add the optical absorbance values ​​and the reflectance ratios of the individual inks in different percentages. When creating an ink data database, add white, add black, and then measure the absorbance and reflectance values ​​of the color in each color, and do database identification to confirm the accuracy of the color. The accuracy of the database determines the effect of the color formula, if the database does not guide the correct color. After the appraisal, you can start to make some preliminary color formulas. Generally speaking, if you use artificial formulas, you will fix only those colors. However, the computer will consider the characteristics of the first monochrome ink, so all possible Formulas that meet the needs will be found and then selected. However, the problem that is more likely to occur is that the ink color produced in mass production is different from the one originally obtained in the laboratory. The reason is that the operating environment cannot be as simple as in the laboratory when the ink is mass-produced, thus affecting the formulation effect. Therefore, it is necessary to formulate the formula again. The correction, that is, the amount of ink produced, is sent back to the computer for correction based on the existing formula, and the correction process is also stored on the computer for future use. The blended formula must also be tested periodically. This is a more complicated place than manual ink transfer.
I recently went to Hong Kong X-Rite company to carry out training on the computer color matching system, in this regard for the company's ink color matching system to make an overview.
X-Rite's newly developed color ink control system can be divided into three parts - one for the ink transfer system software such as INK-MASTER, Quick Ink, and one for quality control systems such as QA-2000 or QA-LITE software. Spectrophotometer.
INK-MASTER itself is used by ink manufacturers, and the printing plant is more suitable for QUICK-INK software. However, if the printer wants to use QUICK-INK, the premise is the ink itself. The ink supplier must have INK-MASTER. The printer's QUICK-INK can share the ink color data provided by its database. (Inform X-Rite that Toyo Ink has used this system)
The following sections will use the various software and machines required for INK-MASTER or QUICK-INK to make tables for distinction and explanation.
Establishment: The establishment of the color system should be based on the system, and the network operation is better, so the QA-2000 is more suitable.
Although the computer color matching system must spend more time in establishing the database, the actual production process application has higher stability than the manual color matching operation in terms of time efficiency and color quality. The average computer coloring time is 4.9 minutes, which is about twenty minutes or less than the 33.3 minutes of manual color matching. Computer color matching has a very outstanding performance in terms of timeliness. In the performance of color difference, the average color difference of the computer color matching is also smaller than the average color difference of the artificial color matching; the precision is better than the manual color matching. Computer color matching can replace traditional manual color matching on the technical surface, and it also has many additional functions for color management, which can help us save a lot of labor costs, but due to the variability of the actual environment such as the color identification environment, paper and ink Instability of the quality...etc. External factors greatly detract from the reliability of computer color matching, and finally still rely on manual determination. Therefore, it is recommended that the computer color matching system be regarded as an “auxiliary†manual color matching tool to achieve a perfect color matching. operation.
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