Thermal printing head
A thermal print head and substrate technology, applied in printing and other directions, can solve the problems of reduced durability of thermal print heads and other issues
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no. 1 approach ＞
[0091] Figure 1 to Figure 6An example of the thermal printhead of the present invention is shown. The thermal printhead A1 of this embodiment includes a substrate 1 , a glaze layer 2 , an electrode layer 3 , a resistor layer 4 , a protective layer 5 , a driver IC 71 , a sealing resin 72 , a connector 73 , a wiring board 74 and a heat sink 75 . The thermal head A1 is a component that can be incorporated into a printer that prints with the conveyed printing medium 82 sandwiched between the thermal head A1 and the platen roller 81 . As such a printing medium 82, thermal paper used for creating a barcode sheet or a receipt can be mentioned, for example.
[0092] figure 1 is a plan view showing the thermal head A1. figure 2 is along figure 1 The sectional view of line II-II. image 3 It is an enlarged plan view showing main parts of the thermal print head A1. Figure 4 is along image 3 An enlarged cross-sectional view of the main part of line IV-IV. Figure 5 ~ Figure 6 ...
no. 2 approach ＞
[0146] Figure 11 A thermal print head according to a second embodiment of the present invention is shown. The shape of the first protective layer 51 of the thermal head A2 of this embodiment is different from the above-mentioned embodiment. In this embodiment, the upstream end of the second downstream portion 512 b does not extend to the vicinity of the resistance layer 4 . Therefore, the distance ha from the substrate 1 to the top part 516a of the upstream second part is larger than the distance h1 from the substrate 1 to the glaze top part 223 as in the first embodiment, and the distance h1 from the substrate 1 to the second part on the downstream side is greater than that of the first embodiment. The distance hb to the partial top 516b is smaller than the distance h1. In the present embodiment, the upstream second partial ceiling 516a also corresponds to the "second partial ceiling" in the present invention.
[0147] In the present embodiment, the distance ha is also th...
no. 3 approach ＞
[0150] Figure 12 A thermal print head according to a third embodiment of the present invention is shown. The structure of the first protective layer 51 of the thermal print head A3 of this embodiment is different from the above-mentioned embodiment.
[0151]In this embodiment, the downstream end of the second upstream portion 512 a and the upstream end of the second downstream portion 512 b do not extend to the vicinity of the resistance layer 4 . Therefore, the distance ha from the substrate 1 to the upstream second portion top 516a and the distance hb from the substrate 1 to the downstream second portion top 516b are smaller than the distance h1 from the substrate 1 to the glaze top 223. . On the other hand, the second portion 512 of the first protection layer 51 has a separated second portion 512c. The separated second portion 512c is formed at a distance from the upstream second portion 512a and the downstream second portion 512b between the upstream second portion 512...
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Abstract
Description
Claims
Application Information
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