A printer for use in an image forming system including a local area network (LAN) interface for communicating with a server, a printer engine, and an operation unit includes a control unit including a central processing unit (CPU) and a memory such as a random access memory (RAM), and the control unit is capable of performing processing to store a server printing setting flag and notification processing to perform notification to prompt a user to give a setting instruction if an internal time is detected to be initialized and the server printing setting flag is stored.

An apparatus that executes a job, broadcasts a wireless signal prior to establishing a connection by wireless communication with an external apparatus. The wireless signal includes information relating to the apparatus, by which it can be identified whether execution of a job by the apparatus is possible, in a predetermined packet.

An apparatus that executes a job, broadcasts a wireless signal prior to establishing a connection by wireless communication with an external apparatus. The wireless signal includes information relating to the apparatus, by which it can be identified whether execution of a job by the apparatus is possible, in a predetermined packet.

A wireless communication apparatus includes a first wireless communication unit that performs a first wireless communication, a second wireless communication unit that performs a second wireless communication that consumes less electric power than the first wireless communication, a power supply circuit that supplies electric power to the first and second wireless communication unit by receiving electric power supply from a battery or an external power supply, a state detection unit that detects whether the power supply circuit is in a first state for receiving the electric power supply from the external power supply or in a second state for receiving the electric power supply from the battery, and a first control unit. The first control unit determines which one of the first and second wireless communications to adopt as a wireless communication that is to be used for communication, based on detection result by the state detection unit.

An image forming apparatus includes a function providing unit, a display, a power storage apparatus, a holding unit, and a display controller. The function providing unit provides multiple functions including an image forming function and one or more server functions. The display displays a first operation screen for operating the multiple functions. The power storage apparatus performs power supply to the image forming apparatus when power supply from an external power supply is absent. The holding unit holds setting information in which a stoppage target function and a running target function among the multiple functions are specified. The stoppage target function and the running target function are respectively stopped and run during the power supply from the power storage apparatus. The display controller performs control during the power supply from the power storage apparatus. The control is performed to display, on the display, a second operation screen indicating that the stoppage target function is unusable and the running target function is usable.

A power management apparatus attached to a first image forming apparatus configured to switch a power supply switch to an OFF state, includes an energy storage device configured to supply electric power to the apparatus, a communication interface configured to receive a state of a second image forming apparatus from a communication device attached to the second image forming apparatus, and a mechanical switch configured to physically displace a power supply switch of the first image forming apparatus and turn a power supply of the first image forming apparatus ON and OFF based on the state of the second image forming apparatus.

An image forming apparatus, includes an image processing device to perform processing, using electrical power supplied from a supply source, the supply source being selected from a commercial power supply, a first electrical power storage device, and a second electrical power storage device, the second electric power supply storage device supplying electric power in an amount smaller than an amount supplied from the first electric power supply storage device; and circuitry to control the processing to be performed by the image processing device according to the selected supply source. When the supply source is the first electrical power storage device, the circuitry controls the image processing device to execute processing that is executable when the supply source is the commercial power supply. When the supply source is the second electrical power storage device, the circuitry controls the image processing device to execute a part of the processing that is executable when the supply source is the commercial power supply.

A power management apparatus attached to a first image forming apparatus configured to switch a power supply switch to an OFF state, includes an energy storage device configured to supply electric power to the apparatus, a communication interface configured to receive a state of a second image forming apparatus from a communication device attached to the second image forming apparatus, and a mechanical switch configured to physically displace a power supply switch of the first image forming apparatus and turn a power supply of the first image forming apparatus ON and OFF based on the state of the second image forming apparatus.

A wireless communication apparatus includes a first wireless communication unit that performs a first wireless communication, a second wireless communication unit that performs a second wireless communication that consumes less electric power than the first wireless communication, a power supply circuit that supplies electric power to the first and second wireless communication unit by receiving electric power supply from a battery or an external power supply, a state detection unit that detects whether the power supply circuit is in a first state for receiving the electric power supply from the external power supply or in a second state for receiving the electric power supply from the battery, and a first control unit. The first control unit determines which one of the first and second wireless communications to adopt as a wireless communication that is to be used for communication, based on detection result by the state detection unit.

An information processing apparatus includes a first device and a second device, the first device includes a first power receiving member, a first switcher, a first power supply circuit, a failure detector, a second switcher, and a first electrical load, and the second device includes a second power receiving member, a second power supply circuit, a distributor, a third switcher, a second electrical load, and a hardware processor.