Inkjet printers in previous years were all imported, with high precision and high price. Now it is generally bought in China, with low precision and much cheaper price, and the sprayed things are also much cheaper, which is about ten times lower.
At present, the main domestic brands are: Cybertron, Maijiete, Aselan, Caishen, Gong Zheng, Li Yu, West, Wei Qiao Electromechanical, Extreme, Yangfei United, Xingyun and so on.
Foreign countries are mainly Japanese and American manufacturers: Roland, Wu Teng, Maymarch, Witt and so on. Among them, HP, Canon and other manufacturers also have corresponding products. The price of foreign products is generally higher than that of domestic products, but the corresponding accuracy and life also have a good performance.
The main nozzles of inkjet printers are XAAR in Britain and those of Epson, Konica Minolta and spectra under Seiko Group in Japan.
According to the format, inkjet printers can be divided into LF (large format) and VLF (super large format). The width of large format inkjet printer is about one meter. It uses dye-based ink for inkjet printing with high resolution (up to 600- 1000DPI). It can be used for inkjet printing on high-gloss paper to produce photo effects. However, due to the limitation of ink performance, the product is not waterproof and ultraviolet-proof, so it must be coated or coated in the later stage, which is suitable for making renderings and samples. The width of the ultra-large format inkjet printer exceeds 3 meters. It uses pigment-based ink for inkjet printing, mainly facing the huge outdoor advertising market, and the resolution can meet the outdoor requirements (usually 24-70DPI can fully meet the outdoor needs). Due to the difference of inkjet technology and ink, the requirements for substrate are also different. Some inkjet printers will limit the brand and type of substrate, while others will not. Some inkjet printers need post-coating, and some inkjet printer products can be used directly outdoors. In addition, because the color gamut of pigment ink is different from that of dye ink, the color gamut of pigment ink is much narrower than that of dye ink, so the true color reproducibility of ultra-large format inkjet printers using pigment ink cannot reach the level of small photo printers for a period of time. From this perspective, it is more important to look at the final customer base when purchasing equipment.
Maintenance skills of inkjet printer nozzle
The problem of nozzle blockage in the use of inkjet printers is mainly "prevention". The best way to keep the nozzle in the best working condition is to carry out some proper and effective daily maintenance on the nozzle every day, which will greatly reduce the possibility of nozzle blockage.
1. nozzle maintenance after installation and initial stage of equipment.
1 In order to make the nozzles run in the best condition, please print as many pictures as possible within one or two days before the equipment officially starts to work, and it is best to use all four colors of CMYK, and add test paper with four colors of C, M, Y and K on both sides of the pictures to ensure that all nozzles are always in the inkjet state.
When spraying, it is best to take out the sponge at the clean end of the machine together with its bracket.
Two: how to maintain the nozzle after the work is completed every day.
1 Turn off the device.
2 Clean the moisturizing sponge or plastic wrap with special cleaning liquid first, and then pour the cleaning liquid on it.
3. Move the head of the inkjet printer back to the clean end of the machine, and make the nozzle of the nozzle closely combined with the moisturizing sponge or plastic wrap.
4 keep this state and let the equipment stay overnight.
Three: the treatment method after the nozzle is found to be slightly blocked
1 When the nozzle is slightly blocked during the operation of the inkjet printer, don't hesitate to stop printing, then use a vacuum cleaner or a manual air pump to spray ink from the nozzle for nozzle cleaning, and then continue printing after cleaning.
Timely, decisive and thorough treatment of the slight blockage of the nozzle is very important for maintaining the best working condition of the nozzle in the long-term printing process!
In addition, check the nozzle carefully to find out the reason of nozzle blockage.
4. Handling methods when nozzle blockage often occurs in the process of inkjet printing.
1 Stop the inkjet printer first, and then move the print head of the inkjet printer to the cleaning position.
2. Keep the equipment powered on, connect the auxiliary ink cartridge to the floating switch signal line on the head trolley board, and completely unplug it.
3 Unplug the ink supply tube (auxiliary cartridge end) on the nozzle, and then use a glass syringe to extract special cleaning solution to clean the nozzle.
After cleaning, plug in the signal lines of the ink supply tube and the float switch again, and then continue the previously suspended printing job.
Five: the above treatment methods have little or no effect for the time being.
1 Remove the nozzle from the blade nozzle and take it out from the nozzle mounting bracket.
2 Pour a proper amount of special cleaning liquid into a clean glass container, put it into the nozzle and immerse the bottom of the nozzle for 2-3MM, then seal the glass container with plastic wrap (dustproof) and let it stand for more than one day.
Note: The signal interface at the top of the nozzle must not touch the cleaning solution, otherwise the nozzle will be damaged.
3 After the nozzle is soaked, use an ultrasonic cleaning machine for microwave oscillation, pour a proper amount of clean nozzle cleaning liquid into the container of the cleaning machine, then immerse the nozzle bottom in the cleaning liquid for about 2-3MM, and then start the cleaning machine. Please choose a special nozzle cleaner. If you use an ordinary ultrasonic cleaning machine, you must strictly control the time, and the longest time should not exceed five minutes to prevent the nozzle from being damaged.
Note: Do not use the washing machine more than three times in a row.
4 Use a glass syringe to extract 40ML of special cleaning solution and inject it from the ink supply pipe interface at the upper part of the nozzle. Pay attention to the waterline state from the nozzle. If all waterlines are straight and the cleaning is effective, the nozzle can continue to be used (provided that the circuit and piezoelectric crystal are intact). If some waterlines are still crooked, be sure to follow the second and third steps several times.
6. Treatment method when the equipment is expected to stop using for a few days.
If the equipment is expected to be stopped for more than two days, the ink in the nozzle must be cleaned, otherwise the ink in the nozzle will dry up due to the gradual evaporation of the solvent, and even cause irreversible damage to the nozzle. The treatment method is as follows:
1 Turn off the ink-jet printer.
Move the machine head to the cleaning position, and put a corrosion-resistant container under the nozzle to hold the cleaning waste liquid.
3 Use a glass syringe to extract or directly pour out the ink in the auxiliary ink cartridge, and then use a special cleaning solution to clean the auxiliary ink cartridge.
4 Unplug the ink supply tube on the nozzle (from the auxiliary ink cartridge), and then use a glass syringe to extract special cleaning solution to clean the nozzle several times. Finally, don't blow off the residual cleaning liquid in the nozzle. Be sure to leave enough cleaning liquid inside the nozzle, because the cleaning liquid can keep the nozzle warm.
5 Put the treated nozzle into a clean corrosion-resistant container and seal it.
Notes for inkjet printer operators
1 inkjet printers are sensitive to static electricity, and the equipment grounding wire should be treated at one time under the guidance of the installer.
When operating the control panel or nozzle, you must first cut off the main power supply of the inkjet printer and take anti-static measures.
The inkjet files in the computer system should be cleaned at any time to ensure that the hard disk has enough space.
4. The inkjet software cannot open other programs, nor can it open two inkjet programs.
5 files cannot be transferred to the computer that controls the inkjet printer during inkjet printing.
6 The parameter settings of the computer system cannot be changed casually, especially when reinstalling the system.
7. The data transmission cable in the towing chain should be inspected regularly for wear and tear to ensure no open circuit; Short circuit and signal interference.
If the inkjet cloth is too big to move, it will bring horizontal stripes or scraping cloth to the picture, and it will also make the inkjet cloth walk incorrectly. You can open the spray-painted cloth and let it go evenly.
9 The vertical step parameters are adjusted in the driver software, and the adjustment method is shown in the software manual.
10 car has increased noise, so it is necessary to check the wear of the slider or the bearing of the nose and tail frame.
1 1 When the motor is charged, you can't push the trolley, otherwise it will easily cause various dislocations.
The parameters of 12 driver have been adjusted before leaving the factory, and users cannot change them without authorization. If the motor fails during use, please observe the motor alarm signal in detail, and professionals will refer to the instruction manual for handling.
13 synchronous belt tension should be appropriate, too tight or too loose. Adjust with the adjusting bolt.
14 each pipeline interface of the ink supply system must ensure no leakage. Check whether the ink supply of the ink cartridge is normal, and ensure that there is no air leakage at the interface of the ink supply pipe of the nozzle, and there is no air bubble in the ink supply pipe, otherwise there will be insufficient ink supply.
15 If it is found that the inking speed is slow, the filter must be checked or replaced.
16 nozzle should be supplied with ink before power on, because ink is the main way to take away the heat from the nozzle.
17 inkjet printer uses a hood when working to prevent ink from polluting nozzles, connectors, nozzle color separators, etc. Otherwise, it is easy to cause a short circuit accident and damage the nozzle.
Maintenance and maintenance of inkjet printer
The maintenance of inkjet printers is mainly divided into three parts: first, pay attention to a good use environment; Second, it is used for the use and maintenance of the whole machine; The third is the necessary maintenance of ink cartridges, inks and nozzles.
Clean working environment
1 There is a precise print head in the internal structure of the inkjet printer, so mechanical collision and vibration should be avoided when it is placed and used in daily life. The machine should be placed smoothly.
Because the aperture size of sprinkler nozzle is equivalent to the dust floating in the space, if the working environment is too bad, the sprinkler will be blocked. So keep the environment clean.
The working environment temperature of the inkjet printer should not be too high to avoid the corrosion of the mechanical parts and nozzles of the inkjet printer.
B. Use and maintenance of the whole machine
1 as for the maintenance of the whole machine, it is mainly to ensure the cleanliness of the printer, so cleaning the whole machine regularly is a daily compulsory course for users. Due to the infection of dust and printing debris in the air, it is easy to damage the fragile main printing parts of the printer and lead to printing failure. Therefore, in addition to providing a good working environment, we should also develop the good habit of cleaning the printer regularly. When cleaning, it is usually to wipe the outside of the machine with clean water to remove the deposited dust. Then clean the inside of the printer with a soft brush, smooth dry cloth or alcohol cotton ball, and wipe off all the dust inside the machine. . . . Note: The main power supply of the machine must be turned off before cleaning.
Regularly clean the bearings and guide rails of the inkjet printer and apply oil.
Replace or clean the filter and ink system regularly. . . . . .
Cleaning methods of common nozzles
128 nozzle cleaning method:
1 After removing the nozzle, drain the ink inside and soak it in the cleaning solution 10 hours or more.
Vibrate the nozzle with a small ultrasonic wave and withdraw it from the ink inlet with a syringe for no more than three minutes at a time.
Step 2: Continue to do this for many times until the ink jet port is closed in a straight line when printing with cleaning solution.
If the ultrasonic vibration effect is not obvious, let it soak for a longer time, and then repeat the second step.
Cause of blockage
Because the ink of a certain color is not sprayed for a long time or the temperature of the nozzle rises, the ink at rest is dry and caked on the inner wall of the nozzle. Moreover, if it is not cleaned in time and the dryness is serious, the nozzle may not be cleaned cleanly. Therefore, the nozzle is blocked during cleaning, and it should be cleaned immediately after production.
Method of preventing spray head
1 The nozzle voltage is not easy to be too high, so as to prevent the inner wall from drying due to the heat of the nozzle.
2 ink viscosity is not easy to be too large.
3 The nozzles that do not use a certain color for a long time should be cleaned in time.
4. Protect when spraying is stopped.
Use and maintenance of nozzles
1 The socket of the nozzle should not be touched by hand to prevent oxidation.
2 when installing, the nozzle and socket must be aligned, and can't be hard inserted. If the pinhole is not inserted properly, the nozzle will not work normally.
3. Ink, cleaning solution, etc. Can't put it into the nozzle socket, and the polluted socket can be cleaned with alcohol.
4 The nozzle must maintain a good heat dissipation environment when it is used, otherwise it will easily damage the nozzle circuit.
Electrostatic damage to the nozzle circuit is very serious. When operating the nozzle or touching the nozzle insert plate, the operator must eliminate static factors.
6 If the nozzle is disconnected during inkjet printing, inkjet printing must be suspended for suction. If the nozzle is seriously blocked, you can clean the nozzle with cleaning solution and then suck out the ink. Note: the nozzle with serious blockage will produce color difference after cleaning.
7 Using the ink-jet function and cleaning bar function provided by the ink-jet program, it can be guaranteed that all color nozzles will jet ink regularly during ink-jet printing.
8 After painting, seal the protective film on the nozzle surface.
Inkjet printers using solvent-based inks will encounter the trouble of blocking. One of the reasons for clogging is that after the ink solvent volatilizes, ink particles condense in the nozzle, which leads to nozzle clogging. The second reason is that there are impurities in the ink, or they react with a certain solution to generate foreign bodies, which are blocked in the nozzle. The way to prevent it is to use a filtering device, so that the ink cartridge cannot enter impurities; Clean the nozzle frequently.
10 simple cleaning: the ink outside the nozzle can be cleaned by dipping the nozzle cleaning solution with a soft brush. And the residual ink in the nozzle can be sucked out by a vacuum cleaner to make the nozzle of the nozzle unblocked.
1 1 Moderate cleaning: Before cleaning, fill the cleaning tube in the syringe with cleaning solution; When cleaning, unplug the ink tube first, and then insert the cleaning tube into the ink inlet of the nozzle, so that the pressurized cleaning solution enters the nozzle from the ink inlet until the ink in the nozzle is washed clean.
12 deep cleaning: the nozzle with serious nozzle blockage must be removed and thoroughly cleaned, which can be soaked for a long time (dissolving the condensed ink in the nozzle) or cleaned by an ultrasonic cleaner (be careful that the cleaning time should not be too long to avoid damaging the nozzle circuit), or directly handed over to the unit that cleans the nozzle for treatment.
13 The nozzle film on the nozzle surface is polyimide film, so be careful when storing, disassembling, cleaning and soaking the nozzle; If you are injured by a hard object, the light of the nozzle will not be straight, which will affect the picture quality.
14 cleaning nozzle uses special cleaning liquid for ink.
15 nozzle blockage is generally the result of long-term accumulation, so users must always keep the nozzle open when using it.
16 nozzles in use should be thoroughly cleaned regularly. When it is not used for a long time, the nozzle can be removed and soaked for a long time.
Method of prolonging the service life of inkjet printer nozzle
In today's meager profit era, how to save every penny and how to make your equipment bring more profits is a problem that everyone is considering, but what is the effect? Obviously, prolonging the service life of the nozzle is one of the means to reduce the cost.
One: Indoor environment
If the working environment of indoor equipment is not very good, dust can easily enter the main ink box, then the auxiliary ink box and then the nozzle, which will affect the printing effect of the nozzle and shorten the service life of the nozzle.
Two: operation
The nozzle part of the nozzle surface can't rub against any object, and fine hairs are easy to hang on the nozzle surface. Cause blockage and ink dripping, thus affecting the printing effect. Therefore, it is also very important to strictly license the operation of equipment.
Three: auxiliary accessories
Every accessory on the machine has its purpose, so don't disassemble it at will. Such as a main ink cartridge, an auxiliary ink cartridge, a filter and the like.
Four: ink
The quality of ink directly affects the quality of picture and nozzle. It is best to use the ink recommended by the equipment manufacturer, because these inks have been tested strictly for a long time, which has certain guarantee for the equipment and the nozzle.
Five: Maintenance
The inkjet printer must clean the nozzle before turning off the power, and put the nozzle on a moisturizing sea mat to ensure that the nozzle is in the same state as it was a few days ago.
After stopping, the cleaning solution must be coated on the surface of the nozzle and wrapped tightly with plastic wrap, which is closely attached to the nozzle of the leaf nozzle to reduce the volatilization of cleaning solution and ink and prolong the service life of the nozzle to a certain extent.
If you don't use inkjet printers for a long time (such as May Day, November Day, Spring Festival, etc. ), it is best to remove the nozzle from the equipment, soak it in the cleaning solution, and wrap the container with plastic wrap to prevent dust from invading and cleaning solution from volatilizing.
Causes of nozzle blockage
A the ink quality is not good enough, which leads to nozzle blockage.
B. After the nozzle and ink are damaged due to the rapid change of temperature and humidity, the nozzle is blocked.
C the influence of nozzle voltage on nozzle.
Influence of static electricity on inkjet printer and ink.
E Influence of cleaning method on nozzle-It is recommended to wipe the nozzle with a soft sponge or sponge swab instead of ordinary toilet paper. . .
F the influence of work habits on the suction nozzle-for example, there should be no dirt and hard objects on the mouth of the vacuum cleaner to avoid scratching the suction nozzle when cleaning. . . . . .
G Too high ink viscosity-too high ink viscosity will lead to ink sticking in the ink conveying pipe, resulting in insufficient ink supply and insufficient ink ejection, especially in winter.
H ink viscosity is too low-if the ink viscosity is too low and the ink is too thin, the ink jet speed will be very fast, and the ink sprayed on the cloth will reflect back to the nozzle, causing the ink to stagnate on the nozzle and block the nozzle.