A printing apparatus includes: a printing section including a plurality of printing elements that performs printing on a medium; a power supply circuit supplying power to the printing section; a control circuit controlling the printing section and the power supply circuit; and a USB-Type-C interface configured to couple an external device and including a data transmission/reception terminal, a power input/output terminal, and a state identification terminal. When the state identification terminal detects that the external device that receives the power via the power input/output terminal is coupled, and the printing section performs printing, an amount of power supplied to the external device is large in a case in which a drive rate of the plurality of printing elements is low as compared with a case in which the drive rate of the plurality of printing elements is high.

A processor includes a communicating unit, a receiving unit, a processing unit, and a power-off controller. The receiving unit receives an operation from a user. The processing unit executes processing according to a processing request received by at least one of the communicating unit and the receiving unit. If a power-off request is received from a terminal by the communicating unit, the power-off controller stops the processing unit and disconnects a power supply when the operation received from the user by the receiving unit is not being processed and a condition determined in accordance with a processing mode of the power-off request is satisfied.

A sensor apparatus includes a photosensitive sensor, a cover, and a moving mechanism. The photosensitive sensor includes a first lens and a second lens which focus on a photosensitive element. The cover includes a first slit arranged on an optical axis of the first lens and a second slit arranged on an optical axis of the second lens. The moving mechanism is configured to move the photosensitive sensor and the cover relative to each other so that the second slit is arranged on the optical axis of the first lens.

A point-of-sale (POS) device includes a processor, a battery, a transaction object reader, a printer with a printer controller, and optionally a temperature sensor. The processor determines a present power discharge capability rate of the battery, optionally based on a temperature measured by the temperature sensor. The processor also calculates a first estimated power draw rate based on a first setting value for at least one of the components of the POS device, such as the printer. If the first estimated power draw rate is dangerously close to the present power discharge capability rate of the battery, a second estimated power draw rate is calculated based on a second setting value for the one or more components. If the second estimated power draw rate is no longer dangerously close to the present power discharge capability rate of the battery, the components are set to the second settings value.

An information processing apparatus which is capable of properly supplying power to an image processing unit and an image output unit from respective different power supplies without using a control instruction. The image processing unit obtains data from an external apparatus. A type of the obtained data is determined, and supply of power to the image processing unit and the image output unit is controlled based on the determined type of the data.

An apparatus includes a control unit configured to switch a power state among a first power state, a second power state, and a third power state, the first power state being a state where a device driver is loaded and a device is usable, the second power state being a state where the device driver is unloaded and the device is unusable, the third power state being a state where the device driver is unloaded and the device is unusable, power consumption in the third power state being less than power consumption in the second power state. Based on reception of a predetermined signal in a case where the information processing apparatus is in the third power state, the control unit causes the power state to transition from the third power state to the second power state.

An image processing apparatus includes a connection unit, a first power supply unit, a second power supply unit, and a control device. The connection unit is connected to an electronic apparatus including a controlled device and a communication relay unit. The first power supply unit can supply power to the controlled device. The second power supply unit can supply power to the communication relay unit. The control device is capable of switching a power supply state by the first power supply unit and the second power supply unit between at least a first stop state in which power supply by the first power supply unit is continued and power supply by the second power supply unit is stopped and a second stop state in which power supply by the first power supply unit and the second power supply unit is stopped.

When a power state of an image forming apparatus is switched to a sleep state based on occurrence of an event, during a predetermined period after the occurrence of the event, the image forming apparatus does not return from the sleep state in a case where a return-from-sleep event corresponding to pressing a touch panel or pressing a key occurs, and returns from the sleep state in a case where a return-from-sleep event corresponding to an event other than pressing the touch panel and pressing the key occurs.

An image forming apparatus includes a solid state drive (SSD) that stores information, a Serial Advanced Technology Attachment (SATA) controller that reads information from the SSD, writes information to the SSD, and transmits a device sleep (DEVSLP) signal for shifting the SSD to a DEVSLP state, and a power source control unit that can stop power to the SATA controller and transmits the DEVSLP signal for shifting the SSD to the DEVSLP state during a period in which the power to the SATA controller is stopped.

An image forming system includes at least one piece of image forming apparatus and a server. The at least one piece of image forming apparatus transmits a sleep notification when entering a sleep mode which is a power saving state, and transmits a wake-up notification when returning from the sleep mode to a non-power saving state. The server monitors the sleep notification and the wake-up notification. When a specific image forming apparatus of the at least one piece of image forming apparatus has been in the sleep mode for at least a certain period of time, the sever issues a power-off command to the specific image forming apparatus, so that the specific image forming apparatus shuts off automatically. Before issuing the power-off command, the server delivers a power-off notice to the user who has used the specific image forming apparatus.