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

Active 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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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the glass paste used by domestic thermal print head manufacturers mainly relies on foreign products, and there is no corresponding electronic paste product in China, which seriously restricts the development of the domestic printer industry. Therefore, the use of glass paste for thermal print head Research and development is particularly urgent and necessary

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-2

[0040] A method for preparing glass paste for thermal printing head, comprising the steps of:

[0041] Preparation of lead-free glass powder: weighing, mixing, smelting and ball milling according to the different ratios of the oxides listed in Table 1, and then after grinding to d(50)=4.0-5.0 μm, drying and crushing through an 80-mesh sieve, Then use dry, clean compressed air to pass the atomized glass powder through the heat treatment furnace from bottom to top in a vertical furnace to obtain lead-free glass powder; the roasting treatment process is carried out as listed in Table 1;

[0042] Preparation of organic carrier: Weigh 500g according to the ratio of 85% terpineol, 10% Ashland N7 cellulose and 5% oleic acid, dissolve completely at a temperature of 60-90°C, and then filter through a 325-mesh sieve After cooling to room temperature, the organic carrier was obtained for use;

[0043] Preparation of glass paste for thermal print head: according to the ratio listed in Ta...

Embodiment 3

[0056] A method for preparing glass paste for thermal printing head, comprising the steps of:

[0057] Preparation of lead-free glass powder: by weight percentage: BaO 35%, CaO 10%, SiO 2 40%, Al 2 o 3 5%, SrO 5%, ZrO 2 5% weighing, mixing, smelting, ball milling, and then after grinding to d(50) = 4.0μm, drying and crushing through 80 mesh sieve, and then using dry and clean compressed air in a vertical furnace to atomize The glass powder is heat-treated through a heat treatment furnace from bottom to top to obtain lead-free glass powder; wherein, the melting temperature is 1400°C, the time is 0.1h, and the heat treatment temperature is 760°C, and the time is 2min;

[0058] Preparation of organic carrier: Weigh 500g according to the ratio of 90% terpineol, 5% Ashland N10 ethylcellulose and 5% oleic acid, dissolve completely at 60°C, and then filter through a 300-mesh sieve After cooling to room temperature, the organic carrier was obtained for use;

[0059] Preparation...

Embodiment 4

[0061] A preparation method of glass paste for thermal printing head, comprising the steps of:

[0062] Preparation of lead-free glass powder: by weight percentage: BaO 15%, CaO 10%, SiO 2 35%, Al 2 o 3 15%, SrO 20%, ZrO 2 5% weighing, mixing, smelting, ball milling, and then after grinding to d(50) = 5.0μm, drying and crushing through an 80 mesh sieve, and then using dry and clean compressed air in a vertical furnace to atomize The glass powder is heat-treated through a heat treatment furnace from bottom to top to obtain lead-free glass powder; wherein, the melting temperature is 1500°C for 1 hour, and the heat treatment temperature is 780°C for 3 minutes;

[0063] Preparation of organic carrier: weigh 500g according to the ratio of 65% terpineol, 15% Ashland N10 ethylcellulose and 20% oleic acid, dissolve completely at 90°C, and then filter through a 400-mesh sieve After cooling to room temperature, the organic carrier was obtained for use;

[0064] Preparation of gla...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/86C03C8/00
CPCC04B41/5022C04B41/86C03C8/00C04B41/009C04B35/10C04B41/4535C04B41/0072
Inventor 王要东陆冬梅雷莉君王大林张豪鹿宁兰金鹏赵刚张亚鹏
Owner 西安宏星电子浆料科技股份有限公司
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