A thermal printer includes a thermal head configured to perform printing on recording paper; a platen roller, which is arranged at a position opposed to the thermal head, and is configured to convey the recording paper by nipping the recording paper between the thermal head and the platen roller; a head support plate having conductivity, which has the thermal head to be fixed thereto; a frame, which is configured to support the head support plate, and includes a shaft support portion configured to rotatably support the platen roller about an axis; and a conductive member having conductivity, which is provided between a side surface of the shaft support portion and the head support plate.

An image recording device is provided, having a recording unit configured to record an image on a sheet, and a tray disposed below the recording unit. The tray includes a sheet holding surface configured to hold the sheet. Additionally, the image recording device includes a sheet feeder disposed between the recording unit and the tray. The sheet feeder includes a roller for feeding the sheet from the tray. The roller is configured to move between a first roller position in which the roller contacts the sheet holding surface of the tray and a second roller position in which the roller is separated from the sheet holding surface. A return guide, disposed between the recording unit and the sheet feeder, defines a second conveying path to guide the sheet having an image recorded on one side thereof back to the feed guide. The return guide has a first opening configured to accommodate the roller of the sheet feeder when the roller is in the second roller position.

An image forming apparatus includes a recording device configured to record an image on a recording medium and an apparatus body configured to house the recording device. The image forming apparatus further includes an attachment unit configured to be removably mounted in the apparatus body; a protection target disposed downstream, in a mounting direction of the attachment unit, from a mounting position of the attachment unit in the apparatus body; and a contact portion at least a part of which is positioned upstream from the protection target in the mounting direction.

A mobile device which includes a drive element, a processor which controls the drive element, a first battery which supplies power to the drive element, a second battery that supplies power to the drive element and is attachable and detachable, and power wiring which electrically couples the processor, the first battery, and the second battery to each other, in which a wiring length between the processor and the first battery in the power wiring is shorter than a wiring length between the processor and the second battery in the power wiring, and a wiring length between the second battery and the first battery in the power wiring is shorter than a wiring length between the second battery and the processor in the power wiring.

A mobile device includes a drive element, a first battery configured to supply power to the drive element, and a stopping unit stopping supplying of power to the first battery when a voltage of an attachable/detachable second battery configured to supply power to the drive element is greater than or equal to a first voltage for driving the drive element.

There is provided a printing apparatus, including: a base; a thermal head including heating elements arranged in a first direction; a first engagement member; a second engagement member configured to engage with the first engagement member such that the thermal head pivotally moves, relative to the base, around a first axis extending in a second direction intersecting with the first direction; a head holding member being slidable with respect to the base in a third direction intersecting with the first direction and the second direction and holding the thermal head such that the heating elements face the third direction; a first magnetic member positioned on a first side in the first direction relative to the first engagement member; a second magnetic member positioned on the first side in the first direction relative to the second engagement member; and a head pressing member facing the head holding member from a first side in the third direction.

An image forming apparatus includes a recording device configured to record an image on a recording medium, a main body configured to house the recording device, and a cover rotatably attached to the main body. The main body includes a recording face to be disposed opposite the recording medium, a first face positioned opposite the recording face, and a second face positioned between the recording face and the first face. The cover includes a first cover portion configured to cover the first face of the main body, and a second cover portion configured to cover at least a portion of the second face, and the second cover portion is configured to house a battery.

A first feeder contacts a first surface of a first sheet held in a first tray and feeds the first sheet toward a recording unit. A second feeder contacts a first surface of a second sheet held in a second tray and feeds the second sheet toward the recording unit. An inner member is disposed above a standing plate. An outer member comprises an upstream portion opposing the standing plate, and a downstream portion opposing the inner member. The inner member guides the first surface of the first sheet and the first surface of the second sheet. The standing plate guides the first surface of the second sheet. The upstream portion of the outer member guides a second surface of the second sheet, and the downstream portion guides a second surface of the first sheet and the second surface of the second sheet. The standing plate moves relative to the outer member.

A nail printer is a nail printer for printing on a nail of a finger. The nail printer includes a housing and a printer component. The housing includes a front face and a back face. The housing has an opening on the front face for inserting the finger in a specific direction and a pair of slanted wall portions that are disposed on both sides of the opening. The slanted wall portions are inclined downward with respect to the specific direction from the front face to the back face. The printer component is disposed inside the housing. The printer component performs printing on the nail of the finger disposed inside the housing through the opening.

There is provided a liquid discharge apparatus which includes a tank including a liquid storage chamber, an inlet, a liquid lead-out channel, and an atmosphere communication channel, a conveyance mechanism, a carriage, and a head. A lower end of the inlet is positioned at a lower side of the nozzles, and the liquid storage chamber is arranged at a position shifted from the nozzles, in a first-direction side of the front-rear direction, and shifted from the conveyance route, to a second-direction side of the left-right direction. The liquid storage chamber is connected to the liquid outflow channel at a position on a lower side of a center in a up-down direction of the liquid storage chamber, and in the first direction from a center in the front-rear direction of the liquid storage chamber, and on the second-direction side of a center in the left-right direction of the liquid storage chamber.