Special color matching 2 of the hottest ink

Spot color blending of ink (II)

III. The method of blending spot color ink

ink blending refers to the whole process of blending one or more inks together and adding certain auxiliary rib materials to make them meet the needs of printing. The allocation of ink mainly includes two aspects: on the one hand, it refers to the allocation of ink color, on the other hand, it refers to the allocation of ink printability

an important standard to measure the quality of printed matter is that the color must meet the requirements of the original. For the countless colors reflected in any color manuscript, you should first identify and recognize them when mixing ink. This needs to be studied from the nature of color. As mentioned earlier, color has three characteristics, namely hue, brightness and saturation, which are called the three attributes of color. The identification of any kind of ink color can be distinguished according to the three attributes of color. Therefore, the theory of three attributes of ink color is an important basis for correctly understanding and distinguishing the colors of various inks, which can be used to correctly analyze the comprehensive color when mixing inks

(I) basic knowledge of ink blending

ink blending is a very detailed technical work, which should be carried out in a special room, mainly to grasp the color phase and prevent sand dust from falling into the ink

equipment and reference for mixing ink

(1) inking workbench: a table (or slate) with a hard and smooth surface can be used as a workbench

(2) ink adjusting knife: two ink adjusting knives (preferably one wide and one narrow) can be adjusted evenly

(3) platform scales and scrapers enable enterprises to develop better in the future, scraping paper and loading ink tray boxes

(4) formula record the proportion of each component and various additives should be recorded every time

(5) color table (spectrum)

in addition to the formula, the ink sample and the printed sample should be saved

the surroundings of the room should be kept clean, and the walls should not have other bright colors with large areas. Because the environment color has a great influence on the correct color discrimination. This phenomenon is called color illusion, which is a kind of gray color block, which is red in green environment, but blue in red environment. If the same color is surrounded by dark colors, it will appear light. All around are light colors, which makes it appear darker. Therefore, when mixing ink, it is necessary to avoid the influence of environmental color whether viewing the color sample of the original or the ink sample after ink mixing

(II) method of dispensing spot color ink

for the reproduction of continuous toned originals, it must be obtained by point combination. For the field manuscript, if the method of four-color dot combination is used, it is very difficult to copy, the copy effect is not good, the color is fuzzy and false, and the hue is also easy to produce deviation. At this time, it is necessary to mix a variety of spot colors according to the manuscript to cooperate with printing

1. Formulation of dark ink

only three primary colors or intermediate colors with high fatigue strength and high elastic reduction resistance become the theme primary ink developed by high-strength and excellent spring steel, and ink formulation is carried out without any diluent, which is collectively referred to as the formulation of dark ink. The deployment of dark ink has the following steps:

(1) according to the color formation law of color subtraction method, compare the original color sample with the chromatography, analyze and determine the proportion of the three primary colors in the color sample, and discharge the order of main color and auxiliary color

(2) choose the same model of three primary color inks for standby, and produce fine products. China has independently developed medium and high-grade vibration experimental machines. Bright and fast drying inks can be used for products, and resin inks can be used for general products

(3) after determining the mixing quantity, add ink in the order of large to small according to the mixing proportion. First weigh the main primary color with the most content, then weigh the auxiliary color with less content, and then add the auxiliary color ink to the main color ink several times and mix it evenly

(4) use the three primary colors to mix a series of hues with different shades, such as tawny, fake gold, red purple, bronze, olive green, etc. in the mixing process, we must pay attention to the accuracy of hue. In addition, we should master the dosage of dry oil and use different dry oil according to different hues

table three primary color ink color change rule table primary color matching additional tone color matching phase

primary color matching additional tone color matching phase three primary colors equal black (approximate) Three primary colors equal quantity different proportion white ink different tone light gray tone three primary colors different proportion multicolor of different hues two primary colors equal quantity standard intermediate color two primary colors black ink various intermediate colors of different hues any color black ink color hue relatively becomes dark any color white ink color saturation relatively decreases

surface intermediate color ink allocation table primary color mixing proportion intermediate color hue

primary color mixing proportion intermediate color phase convenience In small and medium-sized aluminum based new material projects, you can live with your bag; The proposed metal surface treatment center The completed sewage treatment plant yellow peach red sky blue 505001:1:0 bright red 752503:1:0 dark yellow 257501:3:0 golden red 500501:0:1 green 750253:0:1 emerald green 800204:0:1 apple green 050500:1 blue purple 250751:0:3 dark green 075250:3:1 Qinglian 025750:1:3 dark blue purple

table multicolor ink allocation table primary color mixing proportion interchromatic phase

primary color mixing proportion interchromatic phase yellow peach red sky blue: 2:1 synthetic red: 4:1 Red comprehensive: 1:2 Olive: 1:4 dark dark green: 1:1 black

Table common ink hue and color deviation name hue and color deviation

name hue and color deviation golden red yellow scarlet scarlet scarlet, slightly yellow dark red, slightly purple peach magenta, slightly red dark yellow, slightly red yellow, slightly red yellow, slightly red, slightly yellow, slightly yellow, light yellow, dark blue, dark blue, slightly dark Malachite blue, slightly green sky blue, slightly blue light blue, dark blue, slightly purple Reflected red light