Touch screen

At present, touch screen is more and more widely used in printing equipment. The touch screen is easy to use, saves space, and can be programmed according to your own ideas. They can display text and ICONS, and can hold a large number of button switches counters and cables. There is no advantage of complexity.

According to the working principle and the medium of transmitting information, the touch screen is mainly divided into four types: resistive type, capacitive type, infrared type and surface acoustic type. Each touch screen has its own advantages and disadvantages.

The resistive touch screen is a multilayer composite film controlled by pressure sensing and assembled in a printing device. The main part is a resistive film screen that matches the surface of the display. Resistive touch screen is not afraid of dust and moisture. Any object of the user can be touched. It can also be written or drawn. The outer layer of the film is made of plastic material. If it's too strong, if you touch it with something sharp, it will cut. The entire touch screen poses a risk that the printing device will no longer be used.

Capacitive touch screens work by sensing the body's current. It is a four-layer composite screen. Capacitive screens have serious reflection problems. Color distortion occurs because of uneven transmittance. If a large area of the palm is close to the capacitive screen, but there is no touch, it will fail. This is a lot of printing equipment. This happens more when the weather is wet.

The printing device is equipped with an infrared touch screen that monitors and locates the user's touch using a dense array of infrared rays in the X and Y directions. The infrared touch screen is free from current, static electricity and voltage interference. It is suitable for use in severe weather conditions. Printing equipment can be used normally even under various harsh conditions.