THERMAL PRINT HEAD, METHOD FOR MANUFACTURING THERMAL PRINT HEAD, AND THERMAL PRINTER

• Main Author: NAKAYA GORO
• Format: Patent
• Language: English; Japanese
• Published: 31.08.2023
• Subjects: CORRECTION OF TYPOGRAPHICAL ERRORS; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; LINING MACHINES; PERFORMING OPERATIONS; PRINTING; SELECTIVE PRINTING MECHANISMS; STAMPS; TRANSPORTING; TYPEWRITERS

To provide a thermal print head which is suitable for preventing improper short circuit caused by a wiring layer containing silver.SOLUTION: A thermal print head A1 includes a substrate 1 having a main surface 11 facing a z direction (thickness direction), a glaze layer 2 arranged on the main surface 11, a resistor layer which is arranged on the glaze layer 2 and includes a plurality of heat generation parts arrayed in a main scanning direction, a wiring layer 3 which is arranged on the glaze layer 2 and conducts with the resistor layer, and a protective layer 5 which is arranged on the glaze layer 2 and covers at least the plurality of heat generation parts, wherein the wiring layer 3 has a first layer 31 stacked on the glaze layer 2, and a second layer 32 which is stacked on a part of the first layer 31 and is not covered with the protective layer 5, a component of the first layer 31 contains silver, and a component of the second layer 32 contains a metal element other than the silver.SELECTED DRAWING: Figure 5 【課題】 銀を含む配線層に起因する不当な短絡を防止するのに適したサーマルプリントヘッドを提供する。【解決手段】 サーマルプリントヘッドＡ１は、ｚ方向（厚さ方向）を向く主面１１を有する基板１と、主面１１の上に配置されたグレーズ層２と、グレーズ層２の上に配置され、主走査方向に配列された複数の発熱部を含む抵抗体層と、グレーズ層２の上に配置され、且つ前記抵抗体層に導通する配線層３と、グレーズ層２の上に配置され、且つ少なくとも前記複数の発熱部を覆う保護層５と、を備え、配線層３は、グレーズ層２に積層された第１層３１と、第１層３１の一部分の上に積層され、且つ保護層５に覆われていない第２層３２と、を有し、第１層３１の構成材料は、銀を含み、第２層３２の構成材料は、銀以外の金属元素を含む。【選択図】 図５