Ink pigments in printing
Time:2023-07-29
Views:654
Under normal circumstances, there are two kinds of ink pigments:
① inorganic pigments;
② Organic pigments.
The pigment itself is not luminous, is the color presented by the selective absorption and reflection of the pigment object from the light (including sunlight, fluorescent lamps, incandescent lamps, xenon lamps, dysprosium lamps and other artificial light), is the performance of the structural form of the object.
① inorganic pigments;
② Organic pigments.
The pigment itself is not luminous, is the color presented by the selective absorption and reflection of the pigment object from the light (including sunlight, fluorescent lamps, incandescent lamps, xenon lamps, dysprosium lamps and other artificial light), is the performance of the structural form of the object.
1. The role of pigment in ink:
① To the ink color, and according to the amount of the amount to determine the concentration of ink;
② to the ink with a certain thickness and other physical properties;
③ Maximize the durability of the ink;
④ It affects the dryness of the ink to a certain extent, and the oxidation conjunctival drying is the most obvious.
2. The ink binder is a fluid medium that has a certain viscosity and plays a role in dispersing pigments in the ink. Its functions are as follows:
① To the ink with a certain viscosity, viscosity, flow performance, thixotropic performance;
② Determine the drying type and drying speed of the ink;
③ Determine ink gloss, wear resistance, fastness and so on.
3. The role of auxiliary materials in ink
The auxiliary materials in the ink make some adjustments to the tone, viscosity, consistency, dryness, fluidity and so on.
Requirements for auxiliary materials:
① The fineness of the particle must be similar to the ink, not too thick;
② Can not affect the ink coloring force, adhesion and other properties;
③ can be well integrated with ink, without any chemical reaction;
④ can not play the role of corrosion and chemical reaction on the plate.
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