Glass paste for thermal printing head and preparation method of glass paste

A thermal printing head and glass paste technology, which is applied in the field of thermal printing head materials, can solve the problems that restrict the development of printers, and achieve the effects of expanding the firing temperature range, improving the sintering density, and increasing the melting temperature
CN111499412AActive Publication Date: 2020-08-07西安宏星电子浆料科技股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
西安宏星电子浆料科技股份有限公司
Publication Date
2020-08-07

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Abstract

The invention relates to glass paste for a thermal printing head and a preparation method of the glass paste. The glass paste comprises the following components in percentage by weight: 70-75% of lead-free glass powder, 2-5% of an inorganic additive and 20-28% of an organic carrier. The lead-free glass powder comprises the following components in percentage by weight: 15%-40% of BaO, 10%-30% of CaO, 5%-50% of SiO2, 5%-15% of Al2O3, 5%-20% of SrO and 1%-5% of ZrO2; and the lead-free glass powder is subjected to heat treatment of roasting for 2-3 min within a temperature range of 760-780 DEG C.The method comprises the following steps: (1) dissolving the organic carrier; (2) preparing the glass paste; and (3) rolling the glass paste to finally obtain a product. Compared with the prior art, the method of the invention has the advantages of high initial particle melting temperature, high high-temperature fluidity, low viscosity, uniform particle size, small morphological difference, high bulk density, good high-temperature viscosity, high sintering power, difficulty in generating bubbles or pores and the like.
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Description

technical field

[0001] The invention relates to the field of thermal print head materials, in particular to a glass paste for thermal print heads and a preparation method thereof. Background technique

[0002] The thermal print head (Thermal Print Head, TPH) is mainly composed of a row of heating elements. These heating elements have the same resistance value in theory. When a certain current is passed through, a high temperature will be generated quickly. When these heating points are reached, the temperature will rise in a very short period of time, and the heat-sensitive coating will undergo a chemical reaction, and graphic characters will appear to display the printed content.

[0003] At present, thermal printers have been widely used in terminal systems, banking systems, medical instruments and other fields. Compared with dot matrix printers, thermal printing has the advantages of fast speed, low noise, clear printing, and convenient use. However, the glass paste use...

Claims

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