A printing apparatus includes a printing section performing printing, and a USB-Type-C interface configured to perform switching to a first state in which a printing operation is executed or a second state in which the power is supplied to the external device. The USB-Type-C interface includes a state identification terminal held at a first potential indicating that the USB-Type-C interface is coupled in the first state or a second potential indicating that the USB-Type-C interface is coupled in the second state. The state identification terminal is periodically switched between the first potential and the second potential during a unit time when the external device is not coupled to the USB-Type-C interface, and in the unit time, a time at which the state identification terminal is held at the second potential is longer than a time at which the state identification terminal is held at the first potential.

An information processing apparatus includes a processor configured to, when connected devices whose number is greater than a predetermined number are connected to the information processing apparatus, the predetermined number indicating the maximum number of devices simultaneously supplied with power, switch a power supply destination between the connected devices so as to obtain a state in which the number of connected devices simultaneously supplied with power is equal to or less than the predetermined number.

The purpose of the present invention is to reduce the number of components of an external device to reduce the cost of the external device. The electronic device according to the present technique is provided with: a battery installed unit in which a secondary battery is installed; a charging unit for charging the secondary battery on the basis of an external input power; and a connection unit for electrically connecting an external device in which a secondary battery is installed. The secondary battery installed in the external device is charged by means of the charging unit via the connection unit.

An image forming apparatus includes a section that provides plural functions which include an image forming function and one or more server functions; a power storage device that is capable of supplying electricity to the image forming apparatus in a case where electricity is not supplied from an external power source; a reception section that receives and holds an input of setting information, which defines a stop target function or a work target function in a case where the electricity is supplied from the power storage device, from a user; and a controller that performs control to cause the stop target function, which is defined in the setting information, to be stopped among the plural functions, or performs control to cause the work target function, which is defined in the setting information, to be worked in the case where the electricity is supplied from the power storage device.

An electronic device that is able to operate by receiving a power supply from a host device through a Universal Serial Bus (USB). The electronic device acts as a first sink device and is connected to a second sink device that is able to operate by receiving a power supply from the host device through the USB and the connection to the first sink device. Each of the first sink device and the second sink device is provided with a CC terminal that obtains power supplying capability information from the host device, a pull-up or pull-down resistor connected to the CC terminal, and a GND terminal that grounds a circuit of the CC terminal and the pull-up or pull-down resistor. The electronic device changes a state of grounding of the pull-up or pull-down resistor to the GND terminal, in one of the first sink device and the second sink device.

To provide an apparatus for performing operation relating to switching of a power switch while power is supplied from an auxiliary power source, the apparatus acquires switch information indicating whether the power switch is in an on state from a BMU of a battery pack and determines whether to limit processing based on a user instruction based on the acquired switch information.

An information processing apparatus, including an interface and a controller configured to: receive, from an external device, first change acceptable or non-acceptable information indicating whether changing of an amount of electric power to be supplied to the external device is allowable; supply, after the receiving the first change acceptable or non-acceptable information, the electric power to the external device; receive, during executing the supplying the electric power, second change acceptable or non-acceptable information indicating whether the changing of the power amount is allowable; determine, during executing the supplying the electric power, whether limiting of the power amount is necessary; and limit, based on the second change acceptable or non-acceptable information, the power amount when the controller determines to limit the power amount in the determining whether limiting of the power amount is necessary and the receiving the second change acceptable or non-acceptable information is executed.

According to aspects of the present disclosures, a printing device has a print head, a battery, a USB PD controller. The printing device is connected to an external power source in accordance with a connection compliant with a USB standard. The external power source has a plurality of electrical power profiles. The printing device uses one of the external power source and the battery as an electrical power supplying source of the print head. The printing device a power source voltage value with a rated voltage value of the print head, when the power source voltage value is larger than the rated voltage value, determine the battery as the electrical power supplying source, and, when the power source voltage value is equal to or less than the rated voltage value, determining the external power source as the electrical power supplying source.

A printing apparatus that is communicable with an external apparatus and performs printing by using first electric power supplied from an external power supply, the printing apparatus includes a storage section, a connector which is connectable to a cable and to which second electric power is supplied from the external apparatus via the cable, and a control section, and the control section acts as a storage that stores information in the storage section when the first electric power is not supplied from the external power supply but the second electric power is supplied from the external apparatus via the connector and acts as a device that performs the printing when the first electric power is supplied from the external power supply.

Various embodiments of the present disclosure provide techniques and mechanisms for improving user convenience by displaying the state of a battery of an image forming apparatus in more detail. In a case where the state of the battery is an abnormal state in which the battery is not chargeable, the image forming apparatus displays information indicating that the battery is in the abnormal state and information about a remaining capacity of the battery.