Causes of thermal printer illegible

  • 2016-06-28

Thermal printer working principle

Thermal printer print head is mounted semiconductor heating element, touch the thermal print head is heated and the paper can be printed out after a desired pattern, the principle is similar to a thermal fax machine. Image is generated by heating, chemical reaction generated in the film. This thermal printer is a chemical reaction at a certain temperature. High temperatures can accelerate the chemical reaction. When the temperature is below 60 , the paper needs a rather long, even up to several years to become dark; and when the temperature is 200 , this reflection will be completed within a few microseconds.

Thermal printer illegible reasons:

1.   Power adapter does not meet the requirements. Thermal receipt printers can not produce semiconductor element suitable energy to thermal paper color.

2.   Thermal receipt Printer aging, thermal sheet resistance to change. A specific voltage generating less energy, and thus can not make the color thermal paper.

3.   Inferior thermal paper. Uneven coating or chemical coating thermal sensitivity is low, the thermal energy generated by the semiconductor element printer can not or not enough to make it change color.

4.   Thermal paper thickness does not meet the requirements of thermal receipt printers. Paper and print rubber tire gap is too large. Thermal printer with thermal paper semiconductor element can not be intimate contact.


CASHINO is a professional thermal printers provider, specializing in product research and development in the field of commercial paper printers, we have developed a variety of thermal printers, bar code printers, embedded printer, small ticket printer dot matrix printers and other receipt printers, after years of development and growth, the printer has now become a well-known brand in the field of special instruments, products widely used in government, education, finance, media, telecommunications, pharmaceuticals, hotels, restaurants, shopping malls, supermarkets and other fields.

For more information, visit

© Copyright: 2024 Xiamen Cashino Technology Co., Ltd. All Rights Reserved.

IPv6 network supported


Send A Message

Send A Message

    If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.