A battery mount portion includes a recessed portion into which a portion of a battery enters, a coupling terminal provided inside the recessed portion and configured to be electrically coupled to the battery, and a covering portion that covers the coupling terminal and that constitutes a portion of the housing. In a state in which the battery is unmounted, a cover that covers an area in the battery mount portion other than the covering portion is detachably attachable, and a portion where the cover and the housing overlap each other in a depth direction of the recessed portion is located outside a path of a liquid heading towards the coupling terminal after entering the recessed portion through a portion where the cover and the covering portion oppose each other.

A printer for printing information on a recording sheet, includes a housing configured to accommodate the recording sheet and a printing portion; an attachment member, which is removably mounted to the housing, and has a hook hole for a strap. A portion of the housing, to which the attachment member is mounted, and the attachment member form a rotation regulating portion configured to regulate rotation of the attachment member.

A power supply board includes: first and second power supply circuits; first and second terminals configured to supply the electric power from the first and second power supply circuits to the head, respectively; a first line connected to an output terminal of the first power supply circuit; a second line connected to an output terminal of the second power supply circuit; and a branched line branched form the first line to be connected to an input terminal of the second power supply circuit and supplies the electric power from the first power supply circuit to the second power supply circuit. An input power source is connected to an input terminal of the first power supply circuit.

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 printing apparatus includes a discharge unit that discharges ink onto a print medium based on print data, a power transmission unit that to wirelessly supplies power to the discharge unit for discharging the ink, and a control unit that controls the power to be supplied by the power transmission unit based on the print data.

There is provided a liquid cartridge configured to be inserted into an attachment portion of a printing device in an insertion direction crossing a gravitational direction and attached to the attachment portion in an upright posture. The liquid cartridge includes a liquid chamber storing liquid therein, a liquid passage extending forward in the insertion direction from the liquid chamber, a substrate, a contact and a memory electrically connected to the contact. The substrate has a first surface and a second surface opposite to each other. The first surface includes: a first region facing upward; and a second region lower than the first region in the upright posture. The contact is formed on the first region and is electrically connectable to a contact of the printing device. The memory is mounted on the substrate at a position lower than the contact of the cartridge in the upright posture.

A printer for issuing print media includes: a rechargeable battery configured to supply power to the printer; a print unit configured to print information on the print media; a display unit; and a control unit configured to: compute A based on: a decrease in remaining battery capacity of the battery during a period of time from a reference time to the present time, and a total number of print media that have been issued during the period of time, where A is defined as remaining battery capacity of the battery decreased as a single print medium is issued; compute (BC)/A to obtain a number of print media on which the print unit can print, where B is defined as present remaining battery capacity, and C is defined as a lower limit of remaining battery capacity of the battery; and control the display unit to display the number of print media.

There is provided a liquid cartridge configured to be inserted into an attachment portion of a printing device in an insertion direction crossing a gravitational direction and attached to the attachment portion in an upright posture. The liquid cartridge includes a liquid chamber, a liquid passage, a substrate, a contact, and a memory electrically connected to the contact. The liquid passage extends forward in the insertion direction from the liquid chamber. The substrate has a first surface and a second surface opposite to each other. The first surface includes: a first region facing upward in the upright posture; and a second region aligned with the first region in the insertion direction in the upright posture. The second region has flexibility. The contact is formed on the first region of the substrate. The memory is mounted on the second surface or on the second region.

The disclosure discloses a non-transitory computer-readable medium storing a printing processing program for executing steps. In a line specification step, it is determined whether or not an on-dot ratio or the number of on-dots is equal to or greater than a threshold value and at least one print lines equal to or greater than a threshold value is specified. In a labeling step, a plurality of dot groups is identified such that on-dots adjacent to each other form one dot group. In a dot group specification step, at least one first dot groups including the at least one print lines is specified. In a density reduction process step, a density at the time of print formation of the on-dots included in the first dot groups is made lower than a density at the time of print formation of the on-dots included in at least one second dot groups.

A power supply board includes: first and second power supply circuits; first and second terminals configured to supply the electric power from the first and second power supply circuits to the head, respectively; a first line connected to an output terminal of the first power supply circuit; a second line connected to an output terminal of the second power supply circuit; and a branched line branched form the first line to be connected to an input terminal of the second power supply circuit and supplies the electric power from the first power supply circuit to the second power supply circuit. An input power source is connected to an input terminal of the first power supply circuit.