[Object] To provide a thermal head having improved sealability.

[Solution] A thermal head X1 includes a substrate 7, a heat storage layer 13 disposed on the substrate 7 and including a bulging portion 13a, heating elements 9 disposed on the bulging portion 13a, a protective layer 25 disposed on the heating elements 9, and a covering layer 27 disposed on the protective layer 25. The covering layer 27 includes a first portion 27a disposed apart from the bulging portion 13a, and a second portion 27b disposed between the bulging portion 13a and the first portion 27a. The height of the second portion 27b from the substrate 7 is smaller than the height of the first portion 27a from the substrate 7. Thus, the sealability of the thermal head X1 can be improved.

A thermal head capable of reducing a possibility of separation of a connector is provided. A thermal head includes a substrate; a plurality of heat generating portions disposed on the substrate; a plurality of electrodes which are disposed on the substrate and are electrically connected to the plurality of heat generating portions, respectively; and a connector including a plurality of connector pins which pinch the substrate and are electrically connected to the plurality of electrodes, respectively, and a housing for containing the plurality of connector pins. The housing is disposed adjacent to the substrate in a sub-scanning direction, and the housing includes a support portion disposed under the substrate. This can reduce a possibility of separation of the connector.

The present invention is and includes a conversion circuit for allowing a printer controller to send a different set of control signals for dot history control to an integrated circuit driver other than those which the integrated circuit driver is designed to receive. The conversion circuit includes a plurality of driver circuits coupled to a plurality of strobe signals from at least one strobe signal generator, wherein each of the plurality of driver circuits comprises a plurality of gating groups respectively coupled to the plurality of strobe signals, wherein each of the plurality of gating groups includes a plurality of gate units respectively coupled to a plurality of heating elements wherein at least one gate unit controls at least one coupled heating element according to a corresponding strobe signal.

A liquid discharge apparatus includes: a modulation circuit that generates a modulated signal by pulse-modulating a source signal; a transistor that amplifies the modulated signal to generate an amplified modulated signal; a low-pass filter that includes an inductor and a capacitor and smoothes the amplified modulated signal to generate a drive signal; a feedback circuit that returns the drive signal to the modulation circuit; a circuit board; a piezoelectric element that is displaced by application of the drive signal thereto. The circuit board has a first mounting surface and a second mounting surface. The capacitor and the feedback circuit are mounted and a first ground wiring connected to the capacitor and a second ground wiring connected to the feedback circuit are provided on the first mounting surface. At least one of the modulation circuit, the transistor, and the inductor is mounted on the second mounting surface.

A thermal head includes: a substrate; a heat generating portion disposed on the substrate; a first electrode electrically connected to the heat generating portion; a driving IC which controls actuation of the heat generating portion; a first cover member which covers the driving IC; a connection member which is disposed on the substrate and has a connecting section electrically connected to a second electrode; and a second cover member which covers the connecting section and extends toward the first cover member. The second cover member includes a first portion and a second portion which is thinner than the first portion. The first portion is disposed next to the connection member. The second portion lies farther away from the connection member than the first portion, and includes an overlying part which overlies the first cover member.

A CPU of a printing apparatus energizes heat-generating elements for a predetermined period of time in a first divided printing cycle of two divided printing cycles obtained by dividing one printing cycle, according to a yellow energization pattern, and forms a first yellow print dot without causing a heat-sensitive tape to develop another color. Then, the CPU energizes the heat-generating elements for a predetermined period of time in a second divided printing cycle of the two divided printing cycles, and forms a second yellow print dot on the heat-sensitive tape. By forming two print dots in one printing cycle, the CPU secures a large color reproduction range.

A recording device includes a recording section configured to perform recording on a medium; a control substrate 60 configured to be involved in the operation of the recording section; and a storage section including a metal partition 70 and covering the control substrate 60, wherein the control substrate 60 is in contact with the convex member 72 constitutes at least a part of the partition 70 via the elastic member 80 having heat conductivity.

The thermal print head having COF structure is disclosed. According to the present invention, productivity can be improved with a low step of a protective resin by using a COF method, the height of the thermally compressed COF can be minimized in comparison with the surface of the ceramic substrate by electrically connecting the ceramic substrate and the COF through thermal compression using ACF, and the height of the thermally compressed COF can be minimized in comparison with the surface of the ceramic substrate.

A printer for identifying a type of thermal printhead (TPH) is provided. The printer comprising at least one TPH comprising a plurality of dots. Each dot has an associated resistance. The plurality of dots are in a first pattern having a first end and a second end. The printer may determine a resistance value for each dot. The printer compares the resistance value(s) associated with at least one dot of the first end and at least one dot of the second end with a predefined threshold resistance value. The printer identifies at least one dot having a high resistance value and identify a type of TPH based at least on the at least one heating dot identified.

A thermal head includes a substrate, a bonding material, an electrically conductive member, and an aluminum electrode. The bonding material is positioned on the substrate and contains gold and tin. The electrically conductive member is positioned on the bonding material. The aluminum electrode is positioned on the substrate and electrically connected to the electrically conductive member via the bonding material.