Large-format inkjet printer common fault analysis

Epson large-format inkjet printers have a relatively high requirement for use. Once the printer is operated improperly or does not satisfy the printing conditions, the printer is prone to malfunction.

Fault 1. After the replacement of a new ink cartridge, the "Ink Out" light on the printer's front panel is always on when the power is turned on

There are two reasons for this failure: First, the ink cartridge is not installed, causing the printer to fail to detect the ink cartridge and reinstall the ink cartridge. Second, after replacing the ink cartridge, the printer will charge the ink delivery system. The process cannot be performed in the off state, so the printer cannot detect the reinstalled cartridge.

Solution: Turn on the power and move the print head to the ink cartridge replacement position. After the ink cartridge is installed, let the printer charge ink. After the ink filling process is completed, the fault will be eliminated.

Fault 2. Inkjet Printer Does Not Respond After Issuing a Print Order

In fact, no response from the printer is just an illusion. In the normal use case where the cable is correctly connected and the printer is not out of paper, the printer is not responding, mainly because many tasks are waiting in the printer's print queue, that is, there are already many tasks queued in the printer's cache. If the print command is issued again at this time, the print buffer cannot accept the new print job, and the final phenomenon is that the printer has no response.

Solution: Reboot the printer and let the contents of the printer cache be automatically lost. This will solve the problem of no response.

Fault 3. Plugged nozzle

The nozzle plugging is generally divided into two cases: soft plug plugging and rigid plug plugging.

Soft plug plugging refers to a disconnection fault caused by a certain degree of ink viscosity on the spray head. General use of original ink can be restored after multiple cleanings.

Hard plug plugging refers to plugging caused by chemical coagulation or impurities in the nozzle. This troubleshooting is more difficult. The spray head can be removed and soaked in Epson's special cleaning fluid for cleaning by backwashing and pressurizing. After washing, wash the cleaning liquid on the spray head with purified water and dry it before use. As long as the hard object does not damage the nozzle electrode, the cleaned nozzle can still be used. The author proposes that in the event of a hard blockage plug, it is best to ask professional maintenance personnel to check and repair, in order to avoid improper handling of the larger failure.

In addition, the use of ink cartridges is also prone to nozzle clogging failure, mainly for the following two reasons. One is that the Epson inkjet printer's ultra-fine filter is designed at the ink cartridge outlet, and the interface between the nozzle ink inlet and the ink cartridge is without a filter. When the user injects ink into the ink cartridge at the ink outlet of the ink cartridge, it is easy to cause dust and impurities to enter the ink inlet, thereby causing the printer to plug the ink. Second, the chemical nature of the refill ink is different from the residual ink in the original ink cartridge. A slow chemical reaction occurs between different inks, which is extremely difficult to observe with the naked eye. If this ink stays on the print head and reacts, it will have a destructive effect on the print head.

Fault 4. Printer cleaning pump nozzle malfunction

The printer cleaning nozzle plays a decisive role in protecting the printer nozzle, but it is also one of the main factors causing the plug. After the nozzle trolley returns to the position, the nozzle is cleaned by the cleaning pump nozzle to perform weak suction treatment, and the nozzle is sealed and protected. When the printer is installed with a new ink cartridge or the nozzle is broken, the suction pump at the lower end of the machine will pump the air through the nozzle. The higher the work accuracy, the better. However, in actual use, Epson large-format inkjet printers have relatively high requirements for use due to prolonged time, dust, and residual ink solidification. Once the operation is improper or the printing conditions cannot be satisfied, the printer is prone to malfunction. The maintenance method for this part is to remove the upper cover of the printer, remove the trolley, and inhale the purified water with a needle tube, especially to clean the micro-hole gasket embedded in the mouth. Note that when cleaning this part, do not use ethanol or methanol, which will cause the micro-hole gaskets embedded in this component to dissolve and deform. In addition, the inkjet printer should be kept away from the high temperature and dusty working environment as much as possible to ensure the long-term normal use of the machine.

Fault 5. The detection of ink line is normal and the printing accuracy is significantly reduced

If the inkjet printer nozzle is used normally and does not fail, it will only have the life of 20 to 40 cartridges. If the printer's print accuracy is degraded, even if replacing the cartridge does not help, it means that the printer's print head needs to be replaced. In addition, non-genuine ink may be used if printing accuracy deteriorates after replacing the ink cartridge.

For newly purchased printers, if the print line segments are often unclear, the text and graphics are skewed, the outer edges of the text and graphics are blurred, and the printing ink control is in poor synchronization accuracy, the ink cartridges may be fake or non-original ink cartridges and should be replaced immediately.

Fault 6. Misaligned walking trolley

The track of the Epson inkjet printer trolley is made by the precise combination of two alloy copper bushes and a round steel shaft. The running trolley is designed with a piece of felt-containing mat to supplement the oil on the shaft. There are two kinds of reasons for this kind of failure: one is that the dust in the working environment is too long, and the aging of the lubricant on the surface of the shaft is deteriorated. If the printer continues to be used, the shaft and the copper sleeve will be used. Increased friction causes the trolley to misalign, until it collides with the front and cannot be used; the other is due to device damage. Above the printer car parking space there is a photoelectric sensor, which is an important component that provides the printer's motherboard with a print carriage reset signal. If this component is too dusty or damaged, the printer's car will not be able to use it because it cannot find the return signal.

Once this fault occurs, the printer should be turned off immediately and the non-returned vehicle should be pushed back to the parking space by hand. Find a small piece of sponge or felt cloth, put it in the sewing machine oil, and rub it back and forth with the tweezers. It is best to remove the spindle, wash it and then oil it. If the fault is caused by the second reason, the device generally needs to be replaced.

Fault 7. Print disconnection

After the printer is installed with a new ink cartridge, it is basically only necessary to clean it once or twice. The printing ink line can print normally. Generally, it will not break during use.

There are two main reasons for disconnection. One is that the user has not set the paper feed tray before printing. The paper feed causes the paper to be broken, and the paper and the nozzle are broken. The paper feed tray is set properly. You can. The second is that when the original ink is used up quickly, the new ink cartridge is not replaced in time, and the printer operating temperature is high, resulting in print disconnection. Generally, the new ink cartridge will be used within three months after it is installed and replaced immediately. If the replaced ink cartridge is not used frequently, it will cause the airtightness of the ink cartridge to decrease, which will make the viscosity of the ink on the nozzle and the ink cartridge easy. Larger, causing a broken wire in the inkjet printer. In addition, the use of other brands of ink cartridges can also be broken. At this time, the original ink cartridge should be replaced to clean the nozzle.

Fault 8. The ink cartridge has failed after refilling

If the physical and chemical properties of the injected ink are almost the same as those of the original cartridge, it can be used completely. Because the operator manually add ink is done under atmospheric pressure, the amount of each color ink can not be grasped very consistent, the added ink molecules will contain more bubbles, do not rush to use after replacement of such ink cartridges, but should be cleaned After the nozzle has turned off the printer 1 or 2 times, it will be stopped for 2-6 hours before use. At this time, the ink in the cartridge will be automatically exhausted due to the chemical action, and bubbles and air will be discharged to the top of the cartridge, which will reduce the failure.

Another common problem with refill inks is color error. The production of color materials will have a certain color difference due to different production batches, which is also the most difficult to produce color materials. The Epson ink jet printer's additional ink, when there is a deviation in color, can be adjusted in the printer's attribute settings as long as the adjustable range is within the range that can be set by the Epson software.