At present, the application of touch screens on printing devices has become more and more widespread. The touch screens are easy to use, save space, and can be programmed according to their own ideas. They can display text and display icons, and can save a lot of button switch counters and connection lines. No complicated advantages. This article focuses on the classification of touch screens in printing equipment. According to the working principle and the medium for transmitting information, the touch screen is mainly divided into four types: resistive, capacitive, infrared, and surface acoustic wave. Each touch screen has its own advantages and disadvantages. The printing device mainly uses resistive type, and some Capacitive and infrared. 1, resistive The resistive touch screen is assembled in a printing device and is a multi-layer composite film that is controlled by pressure sensing. The main part is a resistive film screen that cooperates with the surface of the display. Resistive touch screen has the characteristics of not being afraid of dust and water vapor. It can be touched by any object of the user. It can also be written or drawn. The outer layer of the film is made of plastic material. If it is too strong, it will be scratched if it is touched with a sharp object. The entire touch screen poses a risk that the printing device can no longer be used. 2, capacitive touch screen The capacitive touch screen operates on the principle of current sensing of the human body. It is a four-layer composite screen. The capacitive screen has serious problems of reflection. Because the light transmittance is not uniform, there will be color distortion. When a large area of ​​the palm is close to the capacitive screen but there is no touch, there will be a malfunction. This is a lot of printing equipment. This happens even more when the weather is wet. 3, infrared touch screen Infrared touch screens are installed in printing equipment to monitor and locate the user's touch using an infrared matrix densely packed in both X and Y directions. The infrared touch screen is not disturbed by current, static electricity and voltage. It is suitable for use in harsh climates. Even in a variety of harsh environments, printing equipment can be used normally. Article source address: http:// Hot Selling Massage Gun,Pain Relief Fascia Gun,Body Massage Gun,Muscle Fascia Massage Gun Shenzhen Hongyutai Technology Co., Ltd. , https://www.redyut.com