banded horizontal lines

1. Look at the degree of processing of the image (PS, CDR), the pixel processing is uneven or unclear
2. If it is downloaded and processed by v8 software, the value of the scanning interval in the layer is changed to 0.6 to try it.
3. The water temperature of the laser tube may be too high.
4. Or it is an external reason such as unstable power supply of laser power supply.