Debugging and measuring device and method for debugging and measuring resistance of thermal head

Abstract

The invention provides a debugging and measuring device and a method for measuring and debugging resistance of a thermal head. The debugging and measuring device is used for debugging and measuring resistance of the thermal head, the debugging and measuring device comprises a controller, a power assembly connected with the thermal head and the controller, and a resistance tester connected with thethermal head and the controller, wherein the power assembly is provided with a low voltage pulse power and a high voltage pulse power. The debugging and measuring device is advantaged in that throughcombination of the pulse voltage high-frequency discharge method and the pulse voltage high-temperature oxidation method, bi-directional resistance debugging of a heating resistor is realized, the heating resistor of the thick film thermal head is made to have good resistance consistency, high-precision requirement is satisfied, and the debugging and measuring device has advantages of simple structure, convenient operation, reversible process, reduced production cost and greatly-improved product quality and production efficiency.

Description

technical field [0001] The invention relates to the technical field of thick-film thermal printheads, in particular to a testing device and a method for testing the resistance of a thermal head. Background technique [0002] With the increasing demand in the thermal printing market, the thick film thermal head is the core component of thermal printers, and its product quality will directly affect the final printing effect and the production cost of the enterprise. The key to improving the yield rate of thick film thermal head products is how to minimize the resistance deviation among the heating resistors in the thermal print head to ensure better resistance uniformity. Therefore, resistance adjustment and resistance measurement are indispensable process links in the process of manufacturing thick film thermal head. Regarding the resistance adjustment, due to the narrow width of the resistance of the thick film thermal head, the commonly used laser resistance adjustment is ...

AI Technical Summary

Problems solved by technology

In terms of resistance measurement, an ordinary multimeter is usually used to directly measure the resistance value of the resistor to check whether it meets the standard. However, since the width of the thick film thermal head circuit is only tens of microns, and the thick film thermal head There are hundreds to thousands of small heating resistors, this method of direct measurement is difficult to apply

The related technology uses the pulse voltage high-frequency discharge method to realize the precise resistance adjustment of the thermal resistance of the thermistor, which improves the production efficiency and product yield. In the process of resistance and resistance measurement, only single-point resistance is carried out, which is difficult to meet higher production efficiency

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