The constituents of a printing ink
The configuration of ink technology is more complex, is generally pigments, binders and additives, according to a certain proportion, first in the inking machine oil mixed into a paste, then the roller type grinding machine or repeatedly grinding, the fine particles of pigment, uniformly dispersed in the binders made.
The additives added in ink are to improve the printability of ink, such as viscosity, adhesiveness and dryness.With the development of printing technology, the varieties of ink are increasing, and the classification methods are also many. If printed according to the classification, there are the following five kinds:Letterpress printing ink: books, black ink, rotary black ink, color relief printing ink, etc.;Lithographic printing ink: offset light resin ink, offset printing rotary ink and so on;Gravure printing ink: gravure ink, engraving intaglio ink, etc.;Stencil printing ink: ink print ink Roneo, etc.;Special printing ink: foaming ink, magnetic ink, fluorescent ink, conductive ink, etc..
The binder is the liquid component of the ink and the pigment is the carrier. In the process of printing, binders carrying pigment particles from the printing machine roller, ink half the plate, was removed to the substrate to form ink film, fixing, drying and adhesion to the substrate. The gloss, dryness, mechanical strength and other properties of the ink film are related to the properties of the binder.
The main components of printing ink are as follows:Pigment is a solid component in ink, a coloring material for printing ink. It is generally insoluble in water. Ink saturation, tinting strength, transparency and other properties are closely related to the properties of pigments.
