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Method for manufacturing exothermic baseplate for thermosensitive printing head

A thermal printing head and manufacturing method technology, applied in printing and other directions, can solve the problems of high product cost, environmental pollution, low yield rate of heating substrate, etc., achieve the effect of improving yield rate, easy control of forming process, and reducing cost

Active Publication Date: 2019-03-19
SHANDONG HUALING ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the field of fine printing such as images in the prior art, the boss-shaped partial underglaze formed on the overall underglaze layer in the heat-generating substrate for the thermal print head is generally chemically engraved by hydrofluoric acid or fluoride plus nitric acid, phosphoric acid, etc. The bottom glaze of the boss-shaped part is formed by etching, and the manufacturing process will pollute the environment. At the same time, it is difficult to control the etching process, so that the yield rate of the heating substrate is low and the product cost is high.

Method used

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  • Method for manufacturing exothermic baseplate for thermosensitive printing head
  • Method for manufacturing exothermic baseplate for thermosensitive printing head
  • Method for manufacturing exothermic baseplate for thermosensitive printing head

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Embodiment 1

[0043] Such as Figure 2 to Figure 4 As shown, in this embodiment, the mechanical processing method of grinding wheel grinding is used to partially remove the overall underglaze layer 2 at the preset position on the overall underglaze layer 2, and the removed overall underglaze layer 2 The depth is T, so that the overall underglaze layer 2 forms a remaining underglaze part 2a and a stepped underglaze part 2b. After that, heat treatment at 850° C. to 1250° C. makes the cross-section of the step-shaped underglaze portion 2 b smooth, and makes the surface of the remaining underglaze portion 2 a flat and smooth.

[0044] Wherein, the depth T={[(W 2 +4t 2 ) / (8*t)] 2 *Arcsin[(4W*t) / (W 2 +4*t 2 )]-0.5[0.5*t+W 2 / (8*t)-t]*W} / W, in this embodiment, the thickness t of the final stepped bottom glaze portion 2b after heat treatment is required to be 20 μm, and the final stepped bottom glaze portion 2b has a width of 2b after heat treatment W is 600 μm, so the calculated depth T of ...

Embodiment 2

[0047] Such as Figure 5 to Figure 7 As shown, in this embodiment, the area where the step-shaped underglaze part 2b is expected to be formed and the area that needs to be preserved are protected by a mask, and the remaining areas on the overall underglaze layer 2 are removed by sandblasting. The removed overall underglaze The depth of the glaze layer 2 is T, so that the overall underglaze layer 2 forms a remaining underglaze portion 2a and a stepped underglaze portion 2b. After that, heat treatment at 850° C. to 1250° C. makes the cross-section of the step-shaped underglaze portion 2 b smooth, and makes the surface of the remaining underglaze portion 2 a flat and smooth.

[0048] Wherein, the depth T={[(W 2 +4t 2 ) / (8*t)] 2 *Arcsin[(4W*t) / (W 2 +4*t 2 )]-0.5[0.5*t+W 2 / (8*t)-t]*W} / W, in this embodiment, the thickness t of the final stepped bottom glaze portion 2b after heat treatment is required to be 25 μm, and the final stepped bottom glaze portion 2b has a width of 2b...

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Abstract

The invention provides a method for manufacturing an exothermic baseplate for a thermosensitive printing head. The method for manufacturing the exothermic baseplate for the thermosensitive printing head comprises the steps that after a full-surface ground coat layer is formed, a mechanical machining method is adopted, and the full-surface ground coat layer is partially removed in preset positionsin the full-surface ground coat layer so that a remaining ground coat portion and a step-shaped ground coat portion are formed in the full-surface ground coat layer; and then heat treatment with the temperature ranging between 850 DEG C and 1250 DEG C is conducted on an insulated baseplate disposed so that a smooth shape appears on fracture surfaces of the step-shaped ground coat portion, and thesurface of the remaining ground coat portion is flat and smooth. According to the method for manufacturing the exothermic baseplate for the thermosensitive printing head referred, because the mechanical machining method such as grinding wheel grinding or sand blasting is adopted, the remaining ground coat portion and the step-shaped ground coat portion are formed in the full-surface ground coat layer; by means of the method, the environment is not polluted, and the cost is lowered; and meanwhile, the formation process of the step-shaped ground coat portion is easy to control, and then the goodproduct rate of products is improved.

Description

technical field [0001] The invention relates to the field of thermal printing, in particular to a method for manufacturing a heating substrate for a thermal printing head. Background technique [0002] In the field of fine printing such as images in the prior art, the boss-shaped partial underglaze formed on the overall underglaze layer in the heat-generating substrate for the thermal print head is generally chemically engraved by hydrofluoric acid or fluoride plus nitric acid, phosphoric acid, etc. The bottom glaze of the boss-shaped part is formed by etching, and the manufacturing process will pollute the environment. At the same time, it is difficult to control the etching process, so that the yield rate of the heating substrate is low and the product cost is high. Contents of the invention [0003] In order to solve the problems existing in the prior art, the present invention proposes a method for manufacturing a heat-generating substrate for a thermal print head, so ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/335
CPCB41J2/3351B41J2/33515B41J2/33535B41J2/3359
Inventor 王吉刚冷正超徐继清
Owner SHANDONG HUALING ELECTRONICS