How are billboards made and printed?

This is not called a printing machine, called "airbrush"

Airbrush can be painted picture width from a few dozen centimeters to 5 meters to 6 meters, the length is almost unlimited.

After the computerized design of the advertisement picture is completed, the special ink will be sprayed on the light box cloth through the airbrush,

The strip of light box cloth will be spliced according to the required width, and then the holes will be punched around it, and the grommets will be stapled, and then the light box cloth will be tautly placed on the advertisement iron frame.

In order to resist the wind, the general advertising iron frame are installed with galvanized sheet, that is, the back of the picture.

This way the picture is also flat.