Adjustment and operation precautions of ink jet printing machine

Check whether the electrical control device of the ink jet printer is sensitive, whether the air valves of each air pipe leak, and add lubricating oil to each lubricating part. Clean the inking roller. Clean the anilox roller carefully with detergent or washing powder. Use a brush dipped in detergent. Do not use a metal brush to avoid damaging the anilox. Adjust the gauge roller and plate cylinder, and adjust the paper feeding device, paper guide wheel spacing, printing pressure, slot size and phase. Correct the parallelism of all rotating rollers.

Start the main motor of the watermark machine, run it slowly and uniformly, and install the plate if it rotates stably without abnormality.

Problems to be noticed in the operation of ink jet printing machine

1. The base layer of the plate can be established through back exposure to facilitate the required embossing and strengthen the adhesion of the polyester support film and the photosensitive resin layer. The correct back exposure is exposed from the direction of the polyester support film, which can protect the subtle patterns of the plate during the process of washing and prevent the collapse of the relief.

2. The main exposure shall be carried out immediately after the back exposure, because the photosensitivity will gradually disappear, resulting in longer main exposure time and poor exposure tolerance.

3. When the layer of the resin plate is torn off, the photosensitive speed of the plate will decline. The film should be placed on the plate immediately or the main exposure should be carried out within 10 minutes for the effect.

4. The main exposure time can be determined by the main exposure test. The photosensitive resin becomes insoluble through polymerization, and the printing plate can reproduce the fine patterns on the film. Before the main exposure, wipe the vacuum film by hand to exhaust the air so that the plate and the negative can fit.