公开(公告)号：US09676205B2

公开(公告)日：2017-06-13

申请号：US15107635

申请日：2014-12-26

申请人： KYOCERA Corporation

发明人： Youichi Moto ,  Takashi Asou ,  Shigetaka Shintani ,  Masashi Yoneta

IPC分类号： B41J2/335

CPC分类号： B41J2/3351 ,  B41J2/33515 ,  B41J2/33525 ,  B41J2/3353 ,  B41J2/33535 ,  B41J2/3354 ,  B41J2/3357

摘要： A thermal head includes: a substrate; a thermal storage layer disposed on the substrate and having a ridge portion; heat generating portions disposed on the ridge portion; and electrodes which are disposed on the substrate. At least one of the electrodes has a first corner portion at which a side surface and an upper surface intersect, more upstream in the conveyance direction of the recording medium than the top portion of the ridge portion. In a cross section of the thermal head, an inclination angle of an imaginary line which connects an intersection point of an imaginary line which hangs downward from the top portion (13b1) of the ridge portion and the substrate, with the first corner portion, is 75° or less from the substrate. Thus, printing residue is less likely to adhere to the thermal head.

公开(公告)号：US09440450B2

公开(公告)日：2016-09-13

申请号：US14426778

申请日：2013-09-30

申请人： KYOCERA Corporation

发明人： Shigetaka Shintani ,  Masashi Yoneta

IPC分类号： B41J2/335

CPC分类号： B41J2/3351 ,  B41J2/33515 ,  B41J2/3353 ,  B41J2/3354 ,  B41J2/33545 ,  B41J2/3357

摘要： A thermal head which is capable of reducing heat concentration on heat generation portions, and a thermal printer provided with the thermal head are provided. A thermal head includes a substrate; a plurality of heat generation portions which are disposed aligned on the substrate; electrodes which are electrically connected to the heat generation portions; and a protection layer which coats the heat generation portions and a part of the respective electrodes. The protection layer includes a first protection layer which is disposed on the heat generation portions and a second protection layer which is disposed on the first protection layer and has a higher thermal conductivity than that of the first protection layer. A width of the second protection layer is larger than that of the first protection layer when seen in an arrangement direction of the heat generation portions.

摘要翻译： 提供能够减少发热部分的热量集中的热敏头，以及设置有热敏头的热敏打印机。 热敏头包括基板; 多个发热部，其配置在所述基板上; 与发热部电连接的电极; 以及覆盖发热部和各电极的一部分的保护层。 保护层包括设置在发热部上的第一保护层和设置在第一保护层上并具有比第一保护层的导热性更高的导热性的第二保护层。 当在发热部的排列方向上观察时，第二保护层的宽度大于第一保护层的宽度。