Abstract: A print head includes an ejection module that ejects a liquid by receiving a corrected drive signal, wherein the ejection module includes a piezoelectric element including a piezoelectric body, the piezoelectric body being located between a first electrode and a second electrode, a pressure chamber substrate located on one side of the vibration plate in the stacked direction and provided with a pressure chamber whose volume changes due to deformation of the vibration plate, a nozzle that ejects a liquid according to a change in volume of the pressure chamber, and a temperature detection unit that is located on the other side of the vibration plate, wherein the drive signal is corrected based on N pieces of temperature information, where N is a natural number of 2 or more, corresponding to the temperature of the pressure chamber detected by the temperature detection unit at different timings.

Abstract: A head unit includes: a print head that ejects the liquid by receiving a logic signal and the drive signal; and a temperature information output circuit that outputs the temperature information signal indicating a temperature of the print head, in which the print head includes: a piezoelectric element driven by receiving the drive signal; a pressure chamber substrate provided with a pressure chamber having a volume that changes due to deformation of the vibration plate; and a temperature detection section configured to detect the head temperature information corresponding to a temperature of the pressure chamber and to output the head temperature information as a head temperature signal, and the temperature information output circuit outputs the temperature information signal based on the head temperature signal acquired during a period when a logic level of the logic signal does not change.

Abstract: A print head includes a generation portion that amplifies an input signal to generate a drive signal, an ejection portion that includes a first driving element driven by a drive signal, and ejects a liquid in response to the drive of the first driving element, a supply portion that includes a first switch for switching between supply and non-supply of the drive signal to the first driving element, and a sound emitting portion that includes a second driving element driven by the drive signal, and a second switch for switching between supply and non-supply of the drive signal to the second driving element, and emits sound in response to the drive of the second driving element, in which the first switch and the second switch are turned on exclusively.

Abstract: A print head includes a head portion that includes a driving element driven by a drive signal and ejects a liquid in response to the drive of the driving element, a flow path member provided with a liquid flow path for supplying a liquid to the head portion, a circuit board provided with a supply circuit for supplying the drive signal to the driving element and disposed between the head portion and the flow path member, and a sound emitting element disposed between the circuit board and the flow path member, in which the flow path member is provided with a sound guide tube that guides sound emitted by the sound emitting element to an outside of the flow path member.

Abstract: A print head includes a head portion that includes a driving element driven by a drive signal and ejects a liquid in response to the drive of the driving element, a flow path member provided with a liquid flow path for supplying a liquid to the head portion, a circuit board provided with a supply circuit for supplying the drive signal to the driving element and disposed between the head portion and the flow path member, and a light emitting element disposed between the circuit board and the flow path member, in which the flow path member is provided with a light guide tube that guides light emitted by the light emitting element to an outside of the flow path member.

Abstract: A print head having an ejection portion that ejects a liquid includes a determination portion that executes a first determination process of determining whether or not a first error occurs in which replacement of the print head or replacement of a hardware coupled to the print head is required and a second determination process of determining whether or not a second error occurs in which neither the replacement of the print head nor the replacement of the hardware coupled to the print head is required, and a light emitting portion that emits light according to a result of determination in the determination portion.

Abstract: A print head includes a generation portion that amplifies an input signal to generate a drive signal, an ejection portion that includes a first driving element driven by a drive signal, and ejects a liquid in response to the drive of the first driving element, a supply portion that includes a first switch for switching between supply and non-supply of the drive signal to the first driving element, and a sound emitting portion that includes a second driving element driven by the drive signal, and a second switch for switching between supply and non-supply of the drive signal to the second driving element, and emits sound in response to the drive of the second driving element, in which the first switch and the second switch are turned on exclusively.

Abstract: A print head includes a head portion that includes a driving element driven by a drive signal and ejects a liquid in response to the drive of the driving element, a flow path member provided with a liquid flow path for supplying a liquid to the head portion, a circuit board provided with a supply circuit for supplying the drive signal to the driving element and disposed between the head portion and the flow path member, and a sound emitting element disposed between the circuit board and the flow path member, in which the flow path member is provided with a sound guide tube that guides sound emitted by the sound emitting element to an outside of the flow path member.

Abstract: A print head includes a head portion that includes a driving element driven by a drive signal and ejects a liquid in response to the drive of the driving element, a flow path member provided with a liquid flow path for supplying a liquid to the head portion, a circuit board provided with a supply circuit for supplying the drive signal to the driving element and disposed between the head portion and the flow path member, and a light emitting element disposed between the circuit board and the flow path member, in which the flow path member is provided with a light guide tube that guides light emitted by the light emitting element to an outside of the flow path member.

Abstract: A print head having an ejection portion that ejects a liquid includes a determination portion that executes a first determination process of determining whether or not a first error occurs in which replacement of the print head or replacement of a hardware coupled to the print head is required and a second determination process of determining whether or not a second error occurs in which neither the replacement of the print head nor the replacement of the hardware coupled to the print head is required, and a light emitting portion that emits light according to a result of determination in the determination portion.

Abstract: An antenna coil that adjusts the inductance while suppressing variations in output strength is provided. The antenna coil includes a bar-shaped core made of a magnetic material, a bobbin that holds the core, and wire wound around the bobbin. The wire includes a first coil section arranged at a position corresponding to a first end of the core, a second coil section arranged at a position corresponding to a second end portion of the core, and a third coil section positioned between the first coil section and the second coil section and that is movable in an extending direction of the core.

Abstract: An antenna coil that adjusts the inductance while suppressing variations in output strength is provided. The antenna coil includes a bar-shaped core made of a magnetic material, a bobbin that holds the core, and wire wound around the bobbin. The wire includes a first coil section arranged at a position corresponding to a first end of the core, a second coil section arranged at a position corresponding to a second end portion of the core, and a third coil section positioned between the first coil section and the second coil section and that is movable in an extending direction of the core.