A printing apparatus includes a printer to form an image on a printing medium by using a color material and to output the printing medium on which the image is formed, a printing controller to control the printer and to store data relating to the printer, a power controller to control supply of power to the printer and the printing controller, and a main controller connected with the printing controller so as to be capable of communication. In accordance with a predetermined request, the power controller performs control so as to suspend supply of power to the printer, the main controller starts acquisition of the data stored by the printing controller, and the power controller performs control so as to suspend supply of power to the printing controller after the main controller completes acquisition of the data.

A communication apparatus for performing automatic reception processing of a calling signal received on a telephone line, by power supplied from a first power supply, includes an image processing unit, a detection unit, a counting unit, and a power supply control unit. The image processing unit performs image processing on image data received over the telephone line, by power supplied from a second power supply. The detection unit detects a calling signal received on the telephone line, by power supplied from the first power supply, while power supplied from the second power supply is stopped. The counting unit counts the number of calling signals detected by the detection unit. The power supply control unit starts supply of power from the second power supply on the basis that the number of detected calling signals counted by the counting unit reaches a predetermined number.

A power supply device installed in an electronic apparatus includes a first power supply outputting power upon a plug being connected to a system power supply, a second power supply outputting power upon receiving of a power supply control signal, a third power supply outputting power from a battery, a controller operating using the power from the second power supply and configured to control the electronic apparatus, a flip-flop configured to operate using the power from the third power supply and configured to store, upon activating the electronic apparatus, first logic data or upon shutting down the electronic apparatus, second logic data, and a power supply control switch operating using the power from the first power supply, to output the power supply control signal to the second power supply, in response to activating the electronic apparatus or in response to storing the first logic data in the flip-flop.

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.

There is provided an image reading apparatus in which a low output mode is a mode that can be controlled in a coupling state where a low power-feeding USB device is coupled, a high output mode is a mode that can be controlled in a coupling state where a high power-feeding USB device capable of feeding power higher than the low power-feeding USB device is coupled, and a control section does not perform image reading at a second reading speed faster than a first reading speed and performs image reading at the first reading speed in the low output mode.

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 image forming apparatus includes: an image forming unit configured to form an image on a medium on which an image is to be formed; a placing portion capable of placing the medium; a power generator configured to generate electricity from heat generated inside the image forming unit; and an illumination unit configured to be lit with the electricity generated by the power generator and to be capable of irradiating at least the placing portion with light.

A portable panel of a printer system is provided. The portable panel includes an interlock mechanism, a scanner and a panel processor. The interlock mechanism facilitates engaging and disengaging a portable panel from the printer system. The scanner is for scanning information. The panel processor is configured to store the scanned information in a memory unit of the portable panel. The panel processor also performs one of mounting or unmounting of the portable panel from the printer system.

An information processing apparatus includes a plurality of devices each having a power source, and a display. The display is shared by the plurality of devices and operated by receiving power supply from the power source of any one of the plurality of devices. The display determines a power supply device which is a device for supplying electric power to the display from the power source thereof, out of the plurality of devices, on the basis of a state of each of the plurality of devices.

The purpose of the present invention is to stop the power supply to a specified device among a plurality of devices to be supplied with power, and maintain the power supply to the other device. An IO-Link master is provided with: an upper-level communication control unit which receives a specification of a device to which the power supply is to be stopped; and a power supply control unit which controls a device power supply switching unit corresponding to the device to which the power supply is to be stopped, to stop the power supply to said device while maintaining the power supply to the other device.