Kyocera Corporation

Yuuki Matsusaki

Masashi Yoneta

Kenji Terada

Kouji Ochi

Tadashi Mitsuoka

A thermal head according to the present disclosure includes a substrate, a plurality of heat generating portions, a plurality of first electrodes, and a second electrode. The plurality of heat generating portions are located on the substrate. The plurality of first electrodes are located on the substrate and respectively connected to the plurality of heat generating portions. The second electrode is located on the substrate and is located across the plurality of first electrodes. The second electrode includes protruding portions protruding in a first direction from the second electrode toward corresponding ones of the first electrodes and being in contact with the corresponding ones of the first electrodes.

Thermal head and thermal printer

A thermal head includes a substrate, a glaze layer, and a reinforced conductor layer. The glaze includes a first glaze and a second glaze. The first glaze extends in a predetermined direction on the surface of the substrate. The second glaze is spaced part from the first glaze to one side in a direction perpendicular to the predetermined direction on the surface of the substrate. The reinforced conductor layer includes a lateral side part. The lateral side part extends on the surface of the substrate from the first glaze side to the second glaze side and is partially located on the second glaze. An edge part on the first glaze side in the second glaze includes a cutout portion cut out toward the one side in the direction perpendicular to the predetermined direction. The lateral side part passes through the cutout portion.

A thermal head of the present disclosure includes a substrate, a heating part, an electrode, a protection layer, and a coating layer made of a resin material. The heating part is placed on or above the substrate. The electrode is placed on or above the substrate and connected to the heating part. The protection layer is placed on or above the heating part and the electrode. The coating layer is placed on or above the electrode and the protection layer. The protection layer includes a recessed part that is opened on an upper surface and that extends along a thickness direction of the protection layer. The recessed part includes an inner wall having a plurality of recesses and projections, and the resin material is disposed inside the recessed part.

A thermal head of the disclosure includes a substrate; a heat generating section disposed on the substrate; an electrode disposed on the substrate, the electrode having a connecting portion connected to the heat generating section; and a protective layer which covers the heat generating section and the connecting portion of the electrode, a part of the protective layer which is disposed on the connecting portion having a closed first void therein.

A thermal head according to the disclosure includes: a substrate; a heat generating section disposed on the substrate; an electrode disposed on the substrate so as to be electrically connected to the heat generating section; a protective layer which covers the heat generating section and part of the electrode, the protective layer being formed of an inorganic material; a cover layer disposed on the protective layer, the cover layer being formed of a resin material; and inorganic particles disposed on a surface of the protective layer so as to protrude from the surface. Moreover, the inorganic particles each comprise a first portion located inside the cover layer and a second portion located inside the protective layer.

A thermal head includes a substrate, a glass-made thermal storage layer disposed on one main surface of the substrate so as to extend to an edge of the substrate; electrodes disposed on or above the thermal storage layer apart from the edge of the substrate; heat-generating resistors disposed above the thermal storage layer apart from the edge of the substrate, the heat-generating resistors being connected to the electrodes; and a first covering layer disposed on or above the electrodes and the heat-generating resistors. The first covering layer extends from atop the electrodes and the heat-generating resistors toward atop the thermal storage layer on the edge of the substrate, and a protection film is disposed on or above the first covering layer disposed on or above the electrodes and the heat-generating resistors and an edge of the protection film is not disposed above the edge of the substrate.

Growing community of inventors

Kirishima, Japan

Yuuki Matsusaki