Reasons why character inkjet printer cannot print and solutions
The small character inkjet printer is also what people often call the continuous inkjet printer, that is, the CIJ inkjet printer. Its working principle is that under the action of pressure, the ink enters the spray gun. The spray gun is equipped with a crystal oscillator, which vibrates to eject the ink. Finally, fixed intervals are formed. Through CPU processing and phase tracking, some ink dots passing through the charging electrode are charged with different electric cores. After passing through a high-voltage magnetic field of several thousand volts, different offsets occur and fly out of the nozzle. On the surface of the moving product, a dot matrix is formed to form text, numbers or graphics. The remaining ink dots are not charged and will not shift, but are directly injected into the recycling tank to be recycled and reused.
1. First check the displayed print count: put a piece of white paper under the nozzle, cover the target sensor with another piece of white paper, and observe whether the print count value displayed by the inkjet printer changes and whether there is a change in the white paper under the nozzle. . To print traces, follow these steps.
（1）. Adjust the target sensor and check whether there is output from the target sensor. When the product passes the target sensor, does the indicator light on the sensor light up (an object is detected), or remains on (the product cannot be distinguished, the sensor sensitivity is adjusted too high);
（2）. Check whether the sensor fiber head is contaminated by ink. Please use alcohol cotton to wipe the sensor fiber head clean (wiping with detergent will cause the fiber to be scrapped);
（3）. Check whether the distance between the sensor fiber head and the target is appropriate? Whether to adjust the sensitivity appropriately, lower the sensitivity, or increase the sensitivity.
2. Check whether the current printing information has printing content, enter the information editing menu, open the printing information, and check whether the information has content.
3. Check whether the printing speed and delay value are appropriate.
The setting of the printing delay and whether the position between the sensor and the nozzle is appropriate. Usually the sensor is closer to the ink outlet of the nozzle and the delay is as small as possible. If the delay is too large, the printed content may be sprayed outside the product and be blocked. Misunderstood as not printing.
4. Check whether the printing speed is appropriate (similar to the product movement speed). If the synchronizer is not installed and the synchronizer mode is selected in the information parameter settings, then the inkjet printer will consider the production line to be inconsistent with the speed of the synchronizer. If it moves, it will not print.