The present invention provides a thermal print head capable of better performing printing on a printing medium.

The thermal print head includes: a substrate (1), formed with single crystal semiconductor; a resistor layer (4), including a plurality of heating portions (41) arranged in a main scan direction; and a wiring layer (3), configuring a charging path to the plurality of heating portions. The substrate includes: a main surface (11), being a surface opposite to the resistor layer; and a convex portion (13), disposed as protruding from the main surface and extending in the main scan direction. The convex portion includes: an inclining surface (132), inclining relative to the main surface and extending in a linear manner when viewing from the main scan direction; and a curving surface (131), disposed, in a protruding direction of the convex portion, on a position farther away from the main surface than the inclining surface, and curving in a manner that protrudes toward the protruding direction. Each of the plurality of heating portions includes a heating curving portion (411) formed on a portion corresponding to the curving surface.

The compact thermal printing mechanism according to the invention is applicable for handheld payment terminals. The invention provides a printer chassis (1) with reinforced flat area (20) by at least one reinforcing element comprising a fold of the printer chassis (1). This folded portion of the printer chassis strengthens the chassis and provides a very strong resistance to bending forces of the lateral pressure means (18) of the platen roller (6). The stable and uniform pressure distribution across the paper width ensures uniform print quality.

A printer includes a thermal head, an electrical connector capable of being connected to and disconnected from the thermal head, and a head cover of the thermal head. The head cover moves between a first position and a second position different from the first position to connect and a disconnect the thermal head and the electrical connector.

A thermal print head includes: a substrate having an obverse surface; a plurality of heat generators arranged on the substrate in a main scanning direction; and a wiring layer provided on the substrate and constituting an energization path to the heat generators. The substrate has a protrusion protruding from the obverse surface and extending in the main scanning direction. The protrusion has a top portion having the largest distance from the obverse surface, and an inclined portion connected to the top portion in a sub-scanning direction. The inclined portion is inclined relative to the obverse surface at a predetermined angle. Each of the plurality of heat generators extends across a boundary between the top portion and the inclined portion. Each of the heat generators is formed on at least a part of the top portion and at least a part of the inclined portion in the sub-scanning direction.

A thermal print head includes: a substrate having an obverse surface; a plurality of heat generators arranged on the substrate in a main scanning direction; and a wiring layer provided on the substrate and constituting an energization path to the heat generators. The substrate has a protrusion protruding from the obverse surface and extending in the main scanning direction. The protrusion has a top portion having the largest distance from the obverse surface, and an inclined portion connected to the top portion in a sub-scanning direction. The inclined portion is inclined relative to the obverse surface at a predetermined angle. Each of the plurality of heat generators extends across a boundary between the top portion and the inclined portion. Each of the heat generators is formed on at least a part of the top portion and at least a part of the inclined portion in the sub-scanning direction.

A thermal head includes: a head base body including a substrate and a plurality of heat generating sections disposed on the substrate; connection portions which are electrically connected to the head base; a connection member which is electrically connected to the connection portions; and a first cover member which covers the connection portions, the first cover member including a plurality of protruding portions provided on an upper surface of the first cover member at predetermined intervals in a main scanning direction.

A thermal print head includes: a substrate having an obverse surface; a plurality of heat generators arranged on the substrate in a main scanning direction; and a wiring layer provided on the substrate and constituting an energization path to the heat generators. The substrate has a protrusion protruding from the obverse surface and extending in the main scanning direction. The protrusion has a top portion having the largest distance from the obverse surface, and an inclined portion connected to the top portion in a sub-scanning direction. The inclined portion is inclined relative to the obverse surface at a predetermined angle. Each of the plurality of heat generators extends across a boundary between the top portion and the inclined portion. Each of the heat generators is formed on at least a part of the top portion and at least a part of the inclined portion in the sub-scanning direction.

A thermal head according to the present disclosure includes: a substrate; a first electrode; a heat generating section; a second electrode; a resin layer; and a protective layer. The first electrode is located on the substrate. The heat generating section is located on the substrate. The second electrode is located on the substrate so as to be electrically connected to the heat generating section and the first electrode. The resin layer is located on the first electrode. The protective layer is located on the resin layer. Moreover, the resin layer includes a first portion inserted in the first electrode.

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 and a method of fabricating the thermal print head. The thermal print head includes a substrate made of a semiconductor material and having a main surface and a convex portion, a resistor layer including a plurality of heat generating portions on the convex portion, and a wiring layer conducted to the plurality of heat generating portions and formed to contact the resistor layer. The convex portion has a top surface, a first inclined surface and a second inclined surface. At least one of two ends of the convex portion in the main scanning direction forms a third inclined surface connected to the main surface and the first inclined surface, and a fourth inclined surface connected to the main surface and the second inclined surface.