The common ink head structure of the ink jet printer mainly includes an ink jet head and an ink cartridge integrated machine and two separate modes. After the ink in the ink cartridge is exhausted, the ink head and the ink cartridge are replaced together. The structure is relatively tightly combined with high reliability, but the relative cost is relatively high; the ink head and the ink tank of the separate structure are separated. Separation, ink cartridges can be replaced individually after exhaustion, which saves costs to some extent. Most printers commonly used in the market today (such as EPSON, CANON, etc.) adopt dual ink head structures: a black (or Photo) ink head and a color ink head. In ink tanks, most of them are black ink independent, and the other three color ink cartridges are integrated, and some ink cartridges of each product are independent and can be replaced individually, further reducing the printing cost.
Inkjet printer "plug" is a very common ink-jet printer failure, the formation of the reasons are: due to the print head is not properly sealed after the print back, or placed for a long time, excessive evaporation of water, resulting in dry ink in the fine print The tip of the head, so that the ink can not be ejected properly; or different inks mixed with each other, resulting in a chemical reaction, usually appears as a fault often occurs, the color is missing, blurred writing and even unable to print properly.
Inkjet printer "plug" classification: can be roughly divided into soft plug, hard plug two major categories.
First, the repair of soft plug
1. Soft plug plugging refers to a disconnection fault caused by a large viscosity of the ink on the nozzle due to various reasons. Sometimes only attached to the surface of the nozzle of the ink outlet, generally the original ink can be recovered after many times of cleaning. The advantage is that the operation is simple, fast, without any physical damage; the disadvantage is that the use of high cost, more waste of ink.
2. Use the print head cleaning function in the printer driver's utilities to clean. The advantage is that the operation is simple and fast; the disadvantage is that the cleaning effect is not ideal.
Precautions:
1. The above two cleaning methods are generally not more than three times. When the printer "plug" is not serious, it should be flushed within three times. If it cannot be opened three times, it means that the plug is more serious, and the number of cleanings is not necessarily valid, and it is not necessary to use a lot of romantic expensive ink. At this time, further processing should be done depending on the specific circumstances.
2.Because of the “air-blocking†phenomenon between the ink cartridge (such as the sponge-filled type) and the print head, a small amount of irregular disconnection will occur. At this time, it is not necessary to repeatedly clean, after a period of time, it can be used normally after rebooting. ;
3. Avoid ink mixing. New purchase ink can not be rushed to add to the ink cartridge. First, use a clean disposable syringe to inhale some ink and observe carefully in the bright place to see if there is any suspended matter in the ink. If there is suspended matter, it cannot be mixed. Then inhale a bit of ink from the used ink cartridge and mix it with the newly purchased ink, then stand for 24 hours and then observe it to see if there is a chemical reaction in the mixed ink. If there is a change (such as crystallization), then two inks are indicated. Compatibility is not good, do not mix!
Second, the hard plug repair
1. Immersion method
Scope of application: Less obstructed
How it works: Dissolve the ink particles one by one with medium-strength organic solvents. Note that you must use 95% organic solvent alcohol, otherwise it will be counterproductive.
Solution: First find a metal container with a smooth bottom surface. Add a little 95% organic solvent alcohol to the container. The amount of alcohol is just enough to cover the stainless steel edge of the print head (be careful not to allow the PCB to come into contact with alcohol). Soaking time generally ranges from 2 hours to 4 days. The advantage is that the cleaning effect is good, and it is not easy to cause physical damage to the print head; the disadvantage is that it takes a long time and it is difficult to solve the urgent needs of the user.
2. Pressure cleaning method
Applicable scope: heavy resistance
Essential tools: 95% alcohol, a clean cup, a disposable syringe, and a disposable infusion set.
Working principle: Using the pressure generated by the siphon action of the syringe, the organic solvent, alcohol, is injected into the print head to achieve the function of cleaning the dry ink head.
Solution: Use a plastic pipe or needle part of a disposable infusion set to make the interface between the syringe and the ink supply port of the print head (the binding site must be tight). After the interface is finished, put the head of the print head at a concentration. 95% of the organic solvent alcohol, through the print head to inhale alcohol (note that only inhalation) in the syringe needle, inhaled several times. The advantage is that the cleaning effect is good. Heavily chopped printheads can be cleaned by this method. It is worth noting that when inhaling alcohol, it should be applied evenly and consistently. It will not cause physical damage. Only the production of the interface needs to be made manually by the actual situation. Therefore, professional maintenance technicians are required to cooperate. There is a certain amount of hands-on capability for hands-on repairs, and a good tool can ensure long-term use.
Distilled water cleaning
Applicable scope: severely hindered
Essential tools: a decoded, empty cartridge, a disposable syringe, and a bottle of medical distilled water (which can also be replaced with purified water).
Working principle: Similar to the principle of pressure cleaning method, it is not necessary to go into details here.
Solution: First prepare a decoded empty ink cartridge, a disposable syringe, and a bottle of medical distilled water. Using the pressure generated by the siphon action of the syringe, inhale the syringe into distilled water through the vent hole of the cartridge and inject it into the ink cartridge. The injected distilled water is sucked out with a syringe, so that the remaining ink in the ink cartridge can be cleaned repeatedly many times.
4. Ultrasonic instrument cleaning
Scope of application: Most severely hindered
Working principle: Use ultrasonic cleaning machine to produce strong ultrasonic wave, make water molecules vibrate violently, disintegrate fine dry ink particles and dissolve in water, so as to achieve the purpose of cleaning.
Solution: Put the inkjet print head into the cleaner gently, add pure water or special print head cleaning solution, pure water or special print head cleaning solution to just cover the stainless steel edge of the print head. (Be careful not to let the PCB board Contact with pure water or a special cleaning solution. It can be quickly cleaned after starting for 10 to 15 hours. The advantage is that the cleaning effect is very satisfactory. The print head that has been blocked for many years can be cleaned and the operation is very simple. The disadvantage is that the maintenance cost is high and the price is expensive. Under normal circumstances, ultrasonic cleaning machines can be found in hospitals, eyewear stores or mobile phone special maintenance points, and some places are free of charge, but also can be modified with ultrasonic humidifier. It is worth noting that the use of cleaning fluid must use pure water or special print head cleaning fluid, can not use the hospital, glasses store or mobile phone special maintenance point of the cleaning fluid, because the glasses store cleaning fluid generally contains more impurities, the hospital The cleaning liquid for special maintenance points of mobile phones is generally a strong organic solvent. Frequent use will cause fatal damage to the inkjet print head that is difficult to repair.
Third, ink jet printer use matters needing attention
1. When you encounter a sudden power failure, power failure, and the ink cartridge cannot be returned to the normal position, the power supply voltage must be stabilized before starting up. After the ink cartridge is normally returned to position, it can be used normally. This is because the special ink used by the printer has the characteristics of quick-drying. To prevent the nozzle portion of the print head from being exposed to the air when the printing is idle, the ink concentration increases and air-drying causes the “plugging†phenomenon. Note: When the printer's red power indicator is still flashing, do not unplug the power cord or turn off the printer.
2.Because of the volatility and environment of use of inkjet printer ink, long-term non-use will cause the nozzle to clog, so even if you do not use it for a long time, you should start the self-test once every other month. This is because each time the printer is turned on normally, the printer will calculate the time interval of the switching machine according to its internal clock, and automatically clean the print head according to its length. The purpose is also to prevent nozzles from jamming due to long-term non-use. .
3. When the ink is used up, replace it with a new one. Because if it is not replaced in time, it can easily cause the nozzle to dry up and be scrapped. However, for HP, CANON and other printers, because the ink cartridge and the nozzle are integrated, the replacement of the ink cartridge also replaces the nozzle. For this type of ink cartridge, the life of the ink cartridge can be extended by adding ink, even if the ink cartridge plug does not cause the entire machine to be scrapped. It is worth noting that this type of ink cartridge is under negative pressure. If ink is added, excess air will not be extracted and no ink will be ejected during printing.
4. Customize different printing methods. By choosing to use different ink cartridges, media types, self-adjusting print density, and custom print modes, ink savings can be achieved.
5. In order to effectively prevent the cartridge from being exposed to the air for a long time and cause the phenomenon of dry plugging, when the printer is not used temporarily, the nozzle should be placed in a dedicated nozzle storage box.
6. Clean the print nozzles regularly. When cleaning, use a good-quality wet wipe or a tissue-free wipe to wipe the edge of the nozzle carefully, taking care not to touch the nozzle. Then use the cleaning button on the control panel to clean the printhead until the printout is clear.