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Thermal paper is a printing paper specially used for cash registers. The quality of the paper is directly affected by the quality of the print and the storage time, and even affects the life of the cash register. At that time, the thermal paper on the market was mixed, and the country had not yet issued the national standard. Many users did not know how to distinguish the quality of thermal paper. This provided a lot of convenience for many merchants to keep inferior thermal paper, which was lost for the user. The storage time is shortened, the handwriting is confused, and the printer is damaged. The thermal printing paper used in the cash register is generally divided into three layers, the bottom layer is a paper base, the second layer is a heat-sensitive coating, and the third layer is a protective layer, and the first layer affects the quality of the heat-sensitive coating or protective layer. What is the difference between thermal paper and plain paper?
If the coating of the thermal paper is not uniform, it will cause darkness in some places, light color in some places, and print quality will be significantly reduced. If the chemical formula of the heat-sensitive coating is unreasonable, the paper storage time will be changed. It is very short, good printing paper can be stored after printing (at normal temperature, avoiding direct sunlight) for 5 years, and now there are more long-lasting thermal papers that can be kept for 10 years, but if the formula of heat-sensitive coating is unreasonable Can only be kept for a few months.
The protective coating is also very important for the storage time after printing. It absorbs some light that causes the thermal reaction of the thermal coating to slow down the paper, and protects the thermal element of the printer from harm, but if it is protected The uneven coating not only greatly reduces the protection of the thermal coating, but even the fine particles of the protective coating fall during the printing process, which is in contact with the thermal element of the printer, which causes damage to the printed thermal element.
What is the difference between the thermal paper commonly used in cash registers and ordinary paper?
Small ticket thermal paper is used for cash registers to print tickets, a special printing consumable, what is the difference between us and the general paper we use in daily life? Xiaobian is here to analyze and analyze for you.
The principle of thermal paper is to apply fine particle powder on a common paper base. The composition is a leuco dye phenol or other acidic substance, which is separated by a film. Under heating conditions, the film is melted and the powder is mixed to develop a color reaction. The color of the handwriting on the thermal paper is unstable and easy to fade, making the contents of the document difficult to read.