Thermal printing head capable of detecting abrasion degree of protective layer

Abstract

The invention relates to the field of thermal printing heads, in particular to a thermal printing head capable of detecting the abrasion degree of a protective layer. The thermal printing head comprises a box body, wherein mounting buckles are connected to the top ends of the outer walls of the two sides of the box body, and threaded holes are connected to the inner walls of the two ends of a transverse symmetry axis at the top of the box body; heat dissipation cylinders are connected to the inner walls of the threaded holes, and supports are connected to the bottom ends of the inner walls of the heat dissipation cylinders; induction motors are connected to the centers of the inner walls of the supports; and fan shafts are connected to the tops of the induction motors. According to the thermal printing head, a signal transmitter and a signal receiver are arranged; when the thermal printing head works normally, a prompter can emit different lights along with the different distances of signals emitted by the signal transmitter and the signal receiver; when the abrasion degree of the protective layer is very serious, the prompter emits red light to remind a user, so that the effect of detecting the abrasion degree of the protective layer is achieved; and a detector is arranged, so that the working efficiency of the whole thermal printing head is improved, and the service life of the whole thermal printing head is prolonged.

Description

technical field [0001] The invention relates to the field of thermal print heads, in particular to a thermal print head capable of detecting the wear degree of a protective layer. Background technique [0002] The thermal print head is composed of a row of heating elements, these elements have the same resistance, these elements are arranged very densely, and the elements will quickly generate high temperature when passing a certain current, when the dielectric coating meets these elements, it will The temperature will rise in a short period of time, and the dielectric coating will undergo a chemical reaction to show color. [0003] There are the following problems: the outer protective layer of the common thermal print head will be worn after repeated use, and the degree of wear of the protective layer also affects the service life of the thermal print head, so the degree of wear of the protective layer Detection is the basis for improving the efficiency and service life o...

AI Technical Summary

Problems solved by technology

[0003] There are the following problems: After the common thermal print head is used for many times, its outer protective layer will be worn, and the degree of wear of the protective layer also affects the service life of the thermal print head, so the degree of wear of the protective layer Detection is the basis for improving the efficiency and service life of thermal printheads

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