Inkjet ink's classification and future trends
1, printing Ink Classification 1, according to Solvent To sub-
Can be divided into water-based and non-water based ink. Water-based pigment ink according to the classification of pigment-based, dye-based, there are sublimation ink; non-water based ink can be divided into oil-based pigment ink, solvent-based pigment ink. From the chemical point of view, one of the oil is solvent. We are collectively referred to as non-water based ink. In addition, there is a now very few people brought the domestic UV solid Of ink. Inkjet ink can be divided into these six categories.
Advantages and disadvantages of various types of printing ink:
(1) water-based dye ink: advantages of bright color, because it is made of water and evaporation of water, there is no harm to the environment, better for the environment; defects is very easy to fade, it is generally used indoors.
(2) pigment ink: the advantage of good light-fastness; drawback is relatively dark color.
(3) water-based ink sublimation: beauty lies Transfer To different media, not just on paper. Such as ceramics, glass class. Many different media can transfer in the past; drawback is too much trouble operating procedures, and higher prices.
(4) soluble ink: As the oil-soluble pigment ink is done, the advantage of odorless, light and good; drawback is expensive and must be printed on coated media.
(5) solvent ink: pigment in nature because it is, so the advantage of light resistance, waterproof, and can print in any medium. Drawback is that its use of oil-based ink has a flammable, dangerous goods, as well as a strong flavor, a certain degree of harm to the human body.
(6) UV-curable ink: the advantage of the ink itself does not contain volatile solvents, and curing after the light resistance, water resistance are good, so it is suitable for the printing industry; disadvantage is that there is no cure ago some of its monomer are some people prone to allergic reactions.
Future Trends: Water based pigment ink will increase the proportion of indoor use, because some new applications, such as digital printing, photo printing, prepress proofing needs to use some non-fading, light is good, you can save the ink, so water based pigment ink is expected to be a future trend.
Solvent pigment ink for further standardization, specialization, environmental protection technology.
Should develop a number of products, the safety index. The current solvent-based inks are to these efforts. Some highly corrosive, strong solvent inks in the future it will slowly be replaced.
Oil-based pigment ink limit of some special industrial applications?? Such as the oil industry.
Sublimation ink and UV curing inks are used in relatively few in the country, but some of it had its own unique advantages, characteristics, the two technologies in foreign countries are on the rise.
Environmentally friendly ink is the direction of future efforts.
2, in accordance with applicable equipment to sub-
Can be divided into indoor Photo Ink and large spray machine ink. Indoor photo ink used in thermal bubble sprinkler or nozzle Epson high-quality, most water-based (Waterbase) of the dye / pigment (Dye / Pigment) inks, printing is good, fine particles; outdoor inkjet ink is a solvent ( Solvent-base) of the pigment ink majority. Waterproof sunscreen, quality general and coarser grain size. Weak solvent ink (ECOInk) is the environmental light solvent ink version, mainly used in Epson's high-quality nozzle. Another dye-sublimation (DyeSublimation) ink, through the method of heat transfer can be Inkjet images transferred to the products of different materials such as fabrics, ceramics and glass products.
3, by type of raw materials
A kind of dye, the other is the pigment.
(1) the characteristics of dye ink
Transparent dye is characterized by selective absorption of incident light through a certain spectral composition of light changes color Er Shi.
Dye-based ink (Dye-basedInk) is full of dissolved molecular level, the ink is a complete complex solution, printed materials easy to absorb, colorful; but not waterproof, and because of dye molecules decomposed quickly in UV light, outdoor fade significantly within a month there.
(2) the characteristics of pigment ink
Pigment-based ink (PigmentInk), the solid pigment ground into small particles, dissolved in a special water-based solvent, a solution similar to colloidal suspensions or solution is called a half. Performance as a result of the color of solid particles, first pigment itself waterproof, as long as materials are also waterproof to solve water problems, so related to photographic paper coating ink problems, while drops in UV light than dye molecules more difficult to decompose, even if the outer layer of the molecular decomposition of the particles, the inner layer will remain the same color, so it's key features is more durable, more coarse particles of the more durable, generally more than one year will be maintained in the outdoors no apparent leg color . But it is opaque, so it can not be used to print a transparent film, and its synthetic colors: red, green and blue saturation is relatively low, so performance is not as dye ink colors bright.
Reality, the ink nozzles are all optional features and customer needs, generally at the printer's ink is water-based dyes or pigments used, water-based dye ink particles more finely, the quality easy to control, plug the first chance to be no pigment ink particles are too big and bigger, if the production process and quality control problems, plug the first chance of the printer would show the instability, spray quality and color map, such as dye ink is not ideal, so customers purchasing the relative less.
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