A thermal printer includes: a platen having a rotatable columnar shape and configured to convey a print medium having various widths by bringing the print medium into contact with an outer peripheral portion of the platen, a central portion of the platen in a direction of a rotary shaft of the platen being taken as a reference; and a print head facing the platen, pressed by the outer peripheral portion, and configured to print by applying heat to the print medium sandwiched between the print head and the outer peripheral portion. In the outer peripheral portion of the platen, a first groove is formed in a direction intersecting the direction of the rotary shaft in each of second outer peripheral portions on both outer sides in the direction of the rotary shaft with respect to a first outer peripheral portion in contact with the print medium having a smallest width that can be conveyed.

The present disclosure provides a printer apparatus including a thermoelectric cooling assembly and a processor coupled to the thermoelectric cooling assembly. The thermoelectric cooling assembly includes a thermoelectric cooling element that includes a first substrate, a second substrate, and a first plurality of semiconductor elements electrically coupled to a second plurality of semiconductor elements in a space between the first substrate and the second substrate. The thermoelectric cooling element includes a base plate electrically coupled to the first substrate. The base plate is positioned proximate to a plurality of labels traversing above the thermoelectric cooling assembly. The processor receives sensor signals indicative of a temperature of a label that comes in contact with the thermoelectric cooling assembly, compares the temperature of the label with a threshold temperature, and generates an output signal indicative of current supplied to the thermoelectric cooling element to adjust the temperature of the thermoelectric cooling element.

The present disclosure provides a thermal print head and a method manufacturing thereof and a thermal printer including the thermal print head, which are capable of suppressing low manufacturing efficiency and enhancing wear-resistance against a recording medium. The thermal print head includes: a substrate, having a main surface facing a thickness direction; a resistance layer, including multiple heating portions arranged in a main scan direction and formed on the main surface; a wiring layer, formed on the resistance layer and connected to the heating portions; and a protection layer, covering a part of the main surface, the heating portions and the wiring layer.

A head unit is used for production of a media sheet that has a medium region row including a plurality of medium regions, the medium regions being to be separate personal information media. The head unit includes a plurality of thermal heads configured to thermally transfer dots exhibiting a structural color from a ribbon to a target. The plurality of thermal heads are arranged so that each thermal head corresponds to a respective one of the medium regions constituting the medium region row.

A thermal print head includes: a substrate; a resistor layer supported by the substrate and including a plurality of heat generating portions arranged in a main scanning direction; a wiring layer supported by the substrate and forming an energizing path to the plurality of heat generating portions; and an insulating layer interposed between the substrate and the resistor layer, wherein the substrate has a cavity portion overlapping the plurality of heat generating portions when viewed in a thickness direction of the substrate.

A thermal print head includes a substrate; a protrusion formed on an obverse surface of the substrate and extending in a main scanning direction; heat generating parts disposed on a top surface of the protrusion and arranged along the main scanning direction; and columnar heat storage members embedded in the protrusion and disposed in a given area having a width in a sub-scanning direction and being elongated in the main scanning direction. Each of the columnar heat storage members is elongated in a thickness direction of the substrate and has an upper end and a lower end, with the upper end being disposed at the same level of the top surface of the protrusion.

The present disclosure provides a method for manufacturing a thermal print head. The method includes: forming an electrode layer on a substrate; and forming a resistor layer including a plurality of heat generating portions connected to the electrode layer. The electrode layer includes a plurality of individual electrodes including a plurality of first striped portions extending in a secondary scan direction and spaced apart in a main scan direction, and a common electrode including a plurality of second striped portions extending in the secondary scan direction. The forming of the resistor layer includes: a coating process of applying a resistor paste in a stripe that overlaps the first striped portions and the second striped portions; a firing process of firing the resistor paste to form a resistor film; and a removal process of removing a removal region in the resistor paste or the resistor film.

The present disclosure provides a method for manufacturing a thermal print head. The method includes: forming an electrode layer on a substrate; and forming a resistor layer including a plurality of heat generating portions connected to the electrode layer. The electrode layer includes a plurality of individual electrodes including a plurality of first striped portions extending in a secondary scan direction and spaced apart in a main scan direction, and a common electrode including a plurality of second striped portions extending in the secondary scan direction. The forming of the resistor layer includes: a coating process of applying a resistor paste in a stripe that overlaps the first striped portions and the second striped portions; a firing process of firing the resistor paste to form a resistor film; and a removal process of removing a removal region in the resistor paste or the resistor film.

According to one or more embodiments, a motor driving device includes a first substrate, a motor drive circuit, a first temperature sensor, a second temperature sensor, and a controller. The first substrate is connected to a motor via a first wiring. The motor drive circuit is provided on the first substrate. The first temperature sensor is provided on the first substrate and detects a first temperature of the motor drive circuit. The second temperature sensor detects a second temperature of an ambient environment where the motor is being used. The controller controls the motor drive circuit based on the first temperature from the first temperature sensor and the second temperature from the second temperature sensor.

The present disclosure provides a thermal print head for achieving fine printing. A thermal print head of the disclosure includes: a substrate, having a substrate main surface and a substrate back surface facing opposite sides in a z direction; a resistor layer, disposed on a side of the substrate main surface and including a plurality of heat generating portions arranged in a main scan direction to generate heat by energization; a wiring layer, disposed on the side of the substrate main surface and including a conduction path for electrically conducting the plurality of heat generating portions; a metal layer, interposed between the substrate and the wiring layer with the resistor layer; and an insulating layer, interposed between the metal layer and the wiring layer with the resistor layer. The conduction path includes the metal layer. The metal layer includes tantalum (Ta).