Six kinds of faults and solutions for printing pictures on uv printer

Six kinds of faults and solutions for printing pictures on uv printer:

Six kinds of faults and solutions for printing pictures on uv printer

1. The printed picture has horizontal lines

a. The cause of the failure: the nozzle is in poor condition. Solution: The nozzle is blocked or oblique spray, just clean the nozzle;

b. The cause of the failure: the step value is not adjusted. Solution: In the printing software settings, the machine is set to open the maintenance mark to correct the step.

2. Large color deviation

a. The reason for the failure: the picture format is wrong. Solution: Set the picture mode to CMYK mode and change the picture to TIFF;

b. The cause of the failure: the nozzle is blocked. Solution: Print a test strip and clean the nozzle if it is clogged;

c. The cause of the failure: the software is set incorrectly. Solution: reset the software parameters according to the standard.

3. The edges of the picture are blurred and ink is flying

a. The reason for the failure: the picture pixel is low. Solution: Picture DPI300 or above, especially for printing 4PT small fonts, need to increase DPI to 1200;

b. The cause of the failure: the distance between the print head and the printed matter is too far. Solution: Keep the printed matter close to the print head and keep a distance of about 2 mm;

c. The cause of the failure: the material or machine has static electricity. Solution: connect the machine shell to the ground wire and wipe the surface of the material with alcohol to eliminate static electricity of the material. Use an electrostatic processor to eliminate static electricity on the surface.

4. Printed pictures are scattered with small ink dots

a. The cause of the failure: ink precipitation or broken ink. Solution: Check the status of the print head, whether the ink fluency is deteriorated, and check whether the ink path is leaking;

b. The cause of the failure: the material or the machine is static. Solution: Ground the machine shell, wipe the surface of the material with alcohol to eliminate static electricity.

5. There is ghosting in the horizontal printing

a. The cause of the failure: the grating strip is dirty. Solution: clean the grating strip;

b. The cause of the failure: the rasterizer is damaged. Solution: Replace with a new rasterizer;

c. The cause of the failure: poor contact or failure of the square-head optical fiber line. Solution: Replace the square fiber optic cable.

6. Printing drips or breaks ink

Dropping ink: A certain nozzle drops ink during printing.

Solution: a. Check whether the negative pressure is too low; b. Check whether there is air leakage in the ink circuit.

Ink breaks: A certain color often breaks ink during printing.

Solution: a. Check whether the negative pressure is too high; b. Check whether the ink path is leaking; c. Whether the nozzle has not been cleaned for a long time, if so, clean the nozzle.