Faults and solutions often encountered in the use of two-dimensional code uv inkjet printers

What problems do we often encounter when using QR code UV inkjet printers? Common faults of QR code UV inkjet printers mainly include detection systems Can not effectively detect double code phenomenon, black screen of cij printer computer screen, missing line of printing content, detection signal synchronizer signal or photoelectric switch or optical fiber signal problem, printing content is scattered, and the initial part of printing content is partial. Open phenomenon and so on. Today, the editor will give you a brief introduction to some of the problems and solutions that the QR code UV cij printer will encounter when using it. I hope to help you

1. QR code UV inkjet printing Machine nozzle device problem:

The azimuth angle of the nozzle device should not be higher or less than 1.6m; because the backlog of the production line may cause sprayer leakage/partial leakage; in order to prevent the nozzle sensation, ensure that the nozzle does not spray On the production line, it is recognized that the orientation of the nozzle is easy to repair and maintain; in short, the position of the nozzle should not be too low.

2. Damage caused by electromechanical interference of two-dimensional code uv inkjet coding:

High-voltage wave peaks cause damage to parts, which may damage sensitive equipment of electrical interference and form a microprocessor circuit board Malfunctions affect the normal operation of some chips. Under such conditions, we must pay attention to this point. Do not wind wires/conduits near high-current wires, and try to keep the length of the wires as short as possible.

3. Wire and conduit organization of the two-dimensional code uv inkjet printer:

Try to use the wire with the right length to prevent the nozzle from swinging, consider the radius of the tortuous, and prevent the time and division of the line Sensational and high-current lines ensure that they will not be bumped by other equipment during operation. It is best to make a protective cover for the printer to block it.

4. The two-dimensional code uv inkjet printer prints the content of the missing line:

(1) Use the strong jet function to print and check whether there is a missing line.

(2) If the print content is just the average of the entire print height, there is a problem with the signal line of the print head drive board.

(3) Use a needle tube to squeeze the ink from the end of the ink cartridge to the end of the nozzle to see if there is a leak in the orifice where there is a leak.

(4) If the nozzle hole is blocked on the machine, first use a needle tube to positively squeeze the cleaning solution from the ink cartridge end to the nozzle end, and try to wash it back and forth several times.

(5) If it doesn’t work, use a vacuum cleaner or the like to carry out suction cleaning from the nozzle end (the so-called negative pressure). In this step, please pay attention to the nozzle when it comes into contact with the nozzle. The duration of cleaning cannot be too long, and the number of times cannot be too many.

(6) If it does not work, remove the nozzle separately and use an ultrasonic oscillator for cleaning. Note that the nozzle cannot be completely immersed in the cleaning solution. The power of the ultrasonic oscillator is controlled below 100W.

5. Detect signal synchronizer signal or photoelectric switch or optical fiber signal problem:

(1) Photoelectric switch or optical fiber signal generally have adjustable sensing distance, first adjust the sensing distance See if it is normal.

(2) Adjust the sensing distance between the product and the photoelectric switch or optical fiber signal to see if it is normal.

(3) There must be a gap between the product and the product, otherwise the photoelectric switch or optical fiber signal will not be triggered.

(4) Whether the transmission parts such as the shaft or transmission belt of the synchronizer are in normal contact and work normally.

6. There are two reasons for the problem of incomplete ink and incomplete printing. The print head driver fails or the ink path is blocked. Troubleshooting methods The following are as follows: ①Check the print head driver circuit to see if the power supply of the print head driver board is normal, whether the driver board is working, and whether the main controller sends the signal to the driver board correctly. ②Check if the pipe joints are loose and cause poor contact and ink leakage; if the filter is clogged, clean it; if the positive pressure is normal when squeezing the ink, check the valve if it is abnormal; the pipe joints and ink tubes have been corroded or blocked. This problem may occur if you use unusable ink and cleaning fluid; if the print head is damaged, you need to replace the print head.

7. The printed content is scattered:

The reasons for this type of problem include slight blockage of the nozzle, missing safety ground wire, and deterioration of the nozzle Or the printing distance is too far, the voltage is too high or the transmission belt is not flat, the troubleshooting methods are as follows:

①Check whether the nozzle is slightly clogged, if clogged, the ink jetted out The drip is not a straight line, so there will be scattered dots around the printed content. In this case, just clean the print head;

②Check if the safety ground is connected, if not grounded The phenomenon of scattered dots will also appear under the interference of static electricity;

③Check whether the nozzle is aging, the newly-purchased machine generally does not appear such a situation, consider printing after eliminating If the distance is too long, there will be scatter if the distance is too long, try to shorten the printing distance;

④Check whether the voltage is normal, the nozzle voltage is too high, and the printing force is too high. If the ink is printed on harder materials, the ink will have scattered dots. It is recommended to lower the voltage; or because the product is not transported smoothly on the conveyor belt, the printing is prone to scattered dots. In this case, replace the conveyor belt immediately.

The above is about the faults and solutions that QR code UV inkjet printers often encounter. If you need to know other knowledge about QR code UV cij printers, please Consult Logo Technology Co., Ltd. official website customer service:

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