Kyocera Corporation

Yoichi Moto

Hidenobu Nakagawa

Sunao Hashimoto

Yui Tanaka

Yoshihiro Niwa

Makoto Miyamoto

Yuuna Ookubo

Kenji Miyamura

Jun Komori

Yoshiyuki Kondo

Yoshira Niwa

Masaaki Kitado

Shoji Hirose

Ayumi Imamura

A thermal head of the present disclosure includes a substrate, a heat generating unit, an electrode, a covering layer, and a covering member. The heat generating unitis positioned above the substrate. The electrode is positioned above the substrate and connected to the heat generating unit. The covering layercovers at least a part of the electrode when viewed in plan. The covering memberis positioned on the covering layer. The covering layerhas an upper surfaceand a lateral surfacethat is positioned on a side of the heat generating unit. An arithmetic-average surface roughness Ra of the lateral surfaceis higher than an arithmetic-average surface roughness Ra of the upper surface

Thermal head and thermal printer

A thermal head includes a substrate, a heat-generating portion disposed on the substrate, electrodes disposed on the substrate and electrically connected to the heat-generating portion, a driver IC disposed on the substrate and electrically connected to the electrodes, and a covering member covering the driver IC. In plan view, a center line of the driver IC extending in a main scanning direction and a highest position of the covering member are located farther form the heat-generating portion than a center line of the covering member extending in the main scanning direction.

Thermal head and thermal printer provided with same

A thermal head includes a substrate; a plurality of heating elements; a plurality of electrodes; a first covering layer; and a covering member. The thermal head further includes a second covering layer extending from the first covering layer onto the end surface. The housing is in contact with the second covering layer.

A thermal head capable of reducing abrasion of the conductive layer and reducing damage of heat-generating portions is provided. A thermal head includes a substrate, a plurality of heat-generating portions disposed on or above the substrate, electrodes provided on or above the substrate and electrically connected to the plurality of heat-generating portions, and a protective layer provided along an arrangement direction of the plurality of heat-generating portions, the protective layer covering the plurality of heat-generating portions and the electrodes. The protective layer has an electrical insulating layer covering the plurality of heat-generating portions and the electrodes, a conductive layer provided on the electrical insulating layer, and an abrasion resistance layer provided on the conductive layer. Part of the conductive layer is an exposed portion exposed from the abrasion resistance layer.

Thermal head and thermal printer including the same

There are provided a recording head capable of reduction of variations in heat-generating temperature among heat-generating elements constituting a heat-generating-element array, and a recording device including the recording head. A recording head includes a heat radiator; a head base body having a substrate placed on or above the heat radiator and a heat-generating-element array composed of a plurality of heat-generating elements arranged on or above the substrate; a bonding layer that is interposed between the heat radiator and the substrate and bonds the heat radiator with the substrate; and a plurality of spacer particles arranged within the bonding layer so as to abut on both of the heat radiator and the substrate. The bonding layer includes a first region situated immediately below the heat-generating-element array and a second region extending in parallel with the first region. The spacer particles are arranged in the second region.

Recording head and recording device comprising same

A recording head applicable to a recording device is disclosed. The recording head comprises a substrate, a conductive pattern layer, and an electric resistor layer. The conductive pattern layer is formed on the substrate and comprises a first conductive portion, a second conductive portion, and an insulating portion. The second conductive portion is paired with the first conductive portion. The insulating portion insulates the first conductive portion and the second conductive portion. The electrical resistance layer: is formed on the conductive pattern layer; is connected to the first conductive portion and the second conductive portion; and comprises a heat-generating region between the first conductive portion and the second conductive portion.

Recording head and recording device

A thermal head includes heat generating parts and a conductive layer having connecting parts electrically connected to ends of the heat generating parts. The conductive layer has wiring parts whose cross-sectional areas are smaller than cross-sectional areas of the respective connecting parts in directions. The wiring parts has a first upper layer and a second upper layer which have smaller widths in arrow directions than widths of the respective connecting parts as well as a first lower layer and a second lower layer which have lengths not shorter than the widths of the respective connecting parts and greater than the widths of the respective upper layers. The respective upper layers and the respective lower layers are arranged to overlap each other.

Growing community of inventors

Kirishima, Japan

Yoichi Moto