Seiko SPT nozzle series
Produced by the Seiko Electronics Group of Japan, Seiko was first known all over the world for the production of precision clocks. Now it has considerable strength and foundation in the production of cartridge piezoelectric nozzles, and its stability is just like its Seiko watches. The same quality is superb.
SPT nozzles are finally designed by combining the performance advantages of all previous nozzles. While focusing on the previous advantages, they are also mainly reflected in:
a. The main performance is the all-stainless steel design, with super durability, and there are 510 pipes for each nozzle.
b. Nozzle voltage can change with temperature, so it can be troubled by other nozzles due to temperature and other external factors.
c. The data port of the print head can adapt to different printing software, and the print density is more dependent than the previous print head?
d. It can be produced in multiple modes. The ink dot particles are 35PL and 12PL, the highest standard precision is 720DPI and 1440DPI, and the color saturation is impeccable.
e. The print width of the print head is 75mm, which is 4 times that of the ordinary print head, and can output quickly.
f. It has a wide range of applications and is currently used in industrial and commercial printing.
g. The cost is low and it tends to be popular.
At present, the brands that mainly use Japanese Seiko SPT nozzles are: Feiteng, Xtreme, Jinghui, Gongzheng, etc.
Japan Konica nozzle series
Konica sprinklers are a newly promoted Japanese brand. Its company first focused on imaging and just stepped into the production of piezoelectric sprinklers. It has also been successful in hardware facilities, but it has too much publicity on domestic agents. Among them, KonicaMinolta 512 print head, according to scientific calculation, its ink dot size is only 56/28PL, and its accuracy is about 720DPI. However, its publicity as 42/14PL has caused many consumers to misunderstand. In addition, its ink is not provided by professional manufacturers. Supervision on the production line is not very strict. Among them, the only successful inkjet printer using Konica nozzles is Yasseran, but due to the brand effect, the price remains high in the industry, and there is no certain flexibility in after-sales service.
At present, the brands that mainly use Japanese Konica nozzles are: Yaselan, Aowei, Cheetah, West, Mejet, Blueprint, etc.
British XAAR (Xaar) nozzle series
The main nozzles produced by XAAR are XAAR128, XAAR500, XAAR126 and XAAR382, XAAR600 and other models. Among them, the 126 and 128 nozzles were one of the most widely used nozzles in China in the early days. At present, the 382 (proton nozzles) and 600 nozzles are mainly used.
At present, the brands that mainly use British XAAR nozzles are: Cyber, Liyu, Mejet, etc.
American Spectra nozzle series
Spectra first produced thermal foaming nozzles for office printing, but eventually gave up due to the emergence of HP and switched to the development of industrial piezoelectric nozzles. At present, it has achieved considerable success in this market. Its print head is characterized by small ink droplets (high corresponding accuracy), very high ejection frequency (fast speed), and is not very picky about ink. Wittur is the first brand to adopt Spectra print heads and is also the most popular in the global market. For the well-received inkjet printers, Spectra’s problem is that the price of the print heads is too high. Although Wittur has sold hundreds of units in China, several domestic inkjet printers using Spectra print head manufacturers have not yet become mainstream products and are mainly exported. It is a compact and lightweight container nozzle with stainless steel packaging. All components can be moved quickly. It is suitable for printers with superior performance. The main models are SpectraSl-128 and Spectra Nova/80LQ.
Among them, 128 series nozzles have many similarities with XAAR128+ nozzles in terms of stable performance and usability. However, before the successful development of domestic inkjet printers for the Nova256 series, this type of nozzles were basically used exclusively by the inkjet printer manufacturer-Witt Company. From the perspective of the internal structure of the print head, the XAAR print head uses Teflon material in the part where the print head directly contacts the ink, and the Spectra print head uses a steel structure. The ink has a certain corrosion ability. Due to the steel structure of the Spectra nozzle, the corrosion resistance of the nozzle to the ink is greatly improved; the ink is pressed out of the nozzle, and the strong pressure easily deforms the diameter of the nozzle. The steel structure of the Spectra nozzle is better than the XAAR nozzle Teflon The inner coating of the material is more pressure resistant. Therefore, Spectra nozzles have a longer service life than XAAR nozzles, which has changed the view that nozzles are con
Whether the mold system of the digital printing equipment can work normally and stably on the machine directly determines the product quality. If the continuity is not good, it will cause insufficient ink supply, resulting in ink cut during the printing process, which affects printing to a large extent the quality of. So what are the factors that affect the fluency of printing ink?
1. Ink particle size
The particle size of printing ink has a great influence on the stability of the ink system. Because the average diameter of the nozzle is only about 50um, it is easy to block the nozzle when the particle size is too large; the average particle size of the ink should be negligible compared with the pipe and nozzle hole, so as to ensure good flow properties. Therefore, when the ink is configured, it must be filtered at 1um and 0.5um (the pore size of the filter membrane is specifically adjusted according to the type of ink) in order to control the size of the particle size.
2. Moisturizing properties of ink
The moisture retention and stability of water make it difficult for its viscosity and surface tension to change with temperature, which promotes the formation of a thin and brittle film at the nozzle, which is easy to dissolve without clogging when inkjet printing again. The ink is mainly based on water-based systems, and the solvents used are mostly water-soluble organic mixtures. Commonly used water-soluble solvents are alcohols, polyols, etc. These organic mixtures can improve the stability of the ink.
3. Ink wettability
The wettability of the ink is related to the surface tension. The surface tension and dynamic surface tension of the ink will affect the wetting of the pipeline and the nozzle, and the final wetting and spreading on the printing medium. If the surface tension is too high, it may cause insufficient wetting and insufficient ink supply; if the surface tension is too low, that is, if the wetting is too strong, it may cause the ink droplets to gather on the print head, causing the ink dot to break. Appropriate surface tension is the key factor. Generally, the surface tension is controlled at about 30-50mN/m.
4. Digital printing equipment and printing environment
The pipeline of the ink supply system is not airtight. During the printing and placement of the ink, some water and low boiling point solvents will evaporate, which will cause changes in the viscosity and surface tension of the ink and other physical and chemical parameters, which will ultimately affect the ink’s performance on digital devices. Printing stability. Therefore, the digital printing equipment needs to be maintained regularly.
The environmental temperature is too high or too low, and the humidity is too high or too low to a certain extent, which will also cause changes in the physical and chemical parameters of the ink, requiring suitable temperature and humidity. In northern China, humidifiers and heating equipment are required in autumn and winter; in southern China, air conditioning and other cooling equipment are required in summer and autumn.
From this point of view, the factor that affects fluency is not a single individual, but a combination of various factors. High-quality ink and the perfection of external systems can fully reflect the fluency of printing ink.
Dye ink (Dye Ink) is a molecular-level fully soluble ink. This ink is a complete composite solution. The probability of blocking the ink head is very small. After printing, it is easily absorbed by the material. The color is bright and the cost is low.
The disadvantage is that it is not waterproof, and because the dye molecules are quickly decomposed under ultraviolet light, the color will fade significantly within one month of outdoor use under ultraviolet light.
The advantage is that the color is bright, the level is clear, and the price is lower than that of the pigment ink, so it is the first choice for printing pictures and making color-jet business cards.
Pigment ink (Pigment Ink) is a vivid description, it is powder ink, of course, this is only a vivid statement, not accurate enough. To be precise, it grinds solid pigments into very fine particles and dissolves them in a special water solvent. It is a suspension or semi-solution, which has the same properties as the pigments used in printing and dyeing clothes. Contrary to the principle that the dye ink penetrates into the medium to form color, it develops color by attaching the color material to the surface of the medium (such as copy paper or printing paper, etc.).
Therefore, its advantage is that it is printed with pigment ink, even if it is printed on ordinary paper, it will not bleed, and because the pigment itself is waterproof and not easily decomposed by ultraviolet rays, it has strong water resistance and light resistance. Even when used outdoors, it can be maintained for more than one year without obvious signs of fading.
The disadvantage is that most of the pigment ink will leave the color material on the surface, so even if it is printed on glossy paper and other flat-surface paper, it cannot print a glossy image. This is why it is generally printed with pigment ink. The things are not shiny. In addition, the manufacturing cost of pigment ink is higher, so the price is more expensive than dye ink, and the price difference is as high as two to four times or more.
1. First, wash the ink cartridge with ultra-pure water until no more colored liquid comes out.
2. First, dilute the cleaning solution CC-G1005U and ultrapure water in a ratio of 1:2 to 1:4. The higher the concentration, the better the cleaning effect.
3. Then heat the mixed solution to 50-60 degrees. (If the cleaning effect is good at room temperature, heating is not necessary)
4. Fill the mixed solution into a clean HP/CANON/LEXMARK ink cartridge and wait for 15-30 minutes, and then use pressure or centrifugation to separate the mixed solution from the ink cartridge to complete the cleaning process.
Note: In some cases, the ink cartridges filled with mixed liquid need to be cleaned in an ultrasonic machine. It is better to just immerse the nozzle in the mixed liquid. The specific time depends on different nozzles and ultrasonic machines of different power. This scheme is for reference only, and the specific method varies with different cleaning processes.
1. Thermal transfer color printing ink (water-based): Thermal transfer color printing ink is formulated with sublimation disperse dyes, other chemical additives and water. Since it is customary to divide inks into oil-based inks and water-based inks in the ink market, when the product appeared in the early days of the market, people called this product a thermal transfer color printing ink, because this ink is a water-based ink, and now people are used to it. Sublimation printing ink or thermal transfer printing ink.
2. The difference between thermal transfer color printing ink and screen printing thermal transfer (sublimation) color paste, thermosetting ink, gravure thermal transfer (sublimation) color paste, and offset printing thermal transfer (sublimation) ink Transfer color printing inks are fundamentally different from screen, gravure, offset thermal transfer color pastes, inks, and screen thermosetting inks.
Thermal transfer color printing ink is used for desktop printers and photo inkjet printers. The printing form is non-plate printing, and other thermal transfer printing forms are plate printing. In addition, there are qualitative differences in printing quality such as color saturation and color reproduction. Digital thermal transfer has obvious quality advantages.
1) Thermal transfer color printing inks are mainly used to produce personalized products.
2) Screen thermal transfer colorants and gravure thermal transfer colorants are mainly used to produce printed paper for chemical fiber fabrics and shoe materials, which are suitable for producing low-priced traditional products.
3) Thermosetting inks (thermosols) are mainly used to produce printed paper for cultural shirts and children's clothing, and are suitable for the production of traditional products.
4). Offset thermal transfer inks are mainly used to produce thermal transfer paintings for advertising posters, colorful flags, and banners, and are suitable for the production of mass advertising products.
3. Classification of thermal transfer color printing inks: Digital thermal transfer color printing inks can be roughly divided into two categories. Since digital thermal transfer application products are roughly divided into advertising image products and industrialized products, if the thermal transfer color printing inks currently used in the market are classified according to their quality and price, they can be divided into'advertising image-grade' inks. And'clothing printing and dyeing grade' ink.
Previous post: Ink knowledge-understanding of ink parameters
Take mN/m as the unit. Unlike the so-called "surface tension", the interfacial tension includes the surrounding medium, for example, air is mostly used as the medium during testing. This parameter affects the following performance?
a. How sharp is the edge of the printed font?
b. Ink permeability in paper and other media?
The range of common ink interfacial tension values for ink fluidity in ink cartridges:? Epson and Canon black and color inks <34 mN/m @ 20C, HP and Lexmark black inks> 50 mN/m @ 20°C,? HP and Lexmark Color ink <34 mN/m @ 20°C.
Use low interfacial tension ink: small ink droplets, the ink will penetrate deeper into paper or other media. Use high interfacial tension ink: large ink droplets, less permeability to the medium. However, too high interfacial tension will cause a lot of foam , This ink is not up to standard.
Viscosity will affect the following properties of the ink:
a. The edge sharpness of printed fonts and ink permeability in paper and other media
b. The fluidity of the ink in the ink cartridges (especially the ink cartridges with sponge, such as HP color ink cartridges and Lexmark black/color ink cartridges)
c. The ink flow is blocked (if the ink viscosity is too high, the ink flow will be completely blocked).
3. pH value
a. If the pH value is too low (acidic), the ink will corrode the ink cartridge
b. If the pH value is too high (alkaline), additional salt will be produced, which will reduce the service life of the cartridge (corrosion) and increase the conductivity
c. To ensure good stability of the ink, the pH value of the ink must be equivalent to the pH value required by the dye
In the ink, the conductivity value is used to reflect the level of salt content. This parameter is affected by the following factors:
a. The salt in the water/ink (such as sodium chloride) will damage the ink cartridge or even make the ink cartridge useless.
b. The ionic nature of the dye will not damage the ink cartridge like salt.
Generally speaking, the salt content should not exceed 0.5%, and the conductivity should be less than 10000us/cm; to avoid the formation of crystals in the nozzle. To
5. Density and particle size:
This parameter is affected by the composition of the ink.
a. The density of dye-based inks is mostly between 1.00 and 1.03
b. The density of pigment ink is approximately 1.04. The particle size of the ink should be less than 0.2um.
The ink of an inkjet printer is the most important part of the printer. Ink for inkjet printers is different from general writing inks, it requires high thermal stability and chemical stability. It requires moderate viscosity, has the characteristics of high concentration, low molecular weight, good fluidity, and clear image layers. From the perspective of the composition of inkjet printers, the main materials are solvents and colorants, and additives such as antioxidants and viscosity modifiers are also added.
Solvent occupies the largest proportion in inkjet printer ink and is the main component, which directly affects the physical and chemical properties of the ink, printing quality, printer printing speed, stability and other properties. However, the types of ink for inkjet printers are classified according to the colorants in the ink. The performance of the colorant directly affects the color and tone of the printed image, and its own color, mixing performance, solubility, acidity and alkalinity, and particle size are particularly important. Color inkjet printing mainly adopts the subtractive color mixing method in the mixed color inkjet technology, and uses complementary colorants such as yellow, blue, and magenta. Since the black produced by the subtractive color mixing method does not look black enough, black is added in order to obtain pure black to improve the print quality. The quality of the image overprinted by each color ink is completely dependent on the colorant's own performance and the effect of overprinting with other colorants.
Ink for inkjet printers is mainly divided into two categories: dyes and pigments according to colorants. Pigments generally exist in the solvent in the form of particles, while dyes are dissolved in the aqueous solvent in molecular form. The dye molecules dissolve in the ink and penetrate or absorb into the surface of the substrate such as paper with the solvent. Because the dye can form a stable and uniform phase in the molecular state and solvent, the image printed by dye ink has high resolution and good clarity, but it has poor light resistance and water resistance, and it is mostly used in indoor occasions. In pigment ink, particles are dispersed into the ink, and the pigment particles remain on the surface of the substrate such as paper, so the color intensity and gloss of the printed image are high. At the same time, when it is exposed to the external environment or sunlight, it is resistant to light and high temperature decomposition, and is suitable for outdoor use, but the fineness of the pigment particles is very high.