An information processing apparatus including a storage device obtains an energized time to the storage device in a standby state where no job is being executed and a number of accesses to the storage device during the standby state. The information processing apparatus provides a display relating to a lifetime of the storage device based on the energized time and the number of accesses to the storage device.

A communication device may detect a disconnection of a first communication link in spite of a communication interface executing a communication for maintaining a state of the first communication link with an external device being established by using a power saving method. The communication device may supply a prohibition instruction for prohibiting a use of the power saving method to the communication interface in a case where the disconnection of the first communication link is detected. The communication interface may maintain a state of a second communication link, which is different from the first communication link, being established by using a normal method without using the power saving method in a case where the communication interface establishes the second communication link with the external device after acquiring the prohibition instruction in response to the disconnection of the first communication link.

An embodiment of the invention has been made to solve a problem that it is impossible to store externally transmitted job information if a printer apparatus is in a hard-off state and it is, therefore, necessary to store the job information in an external apparatus on the transmission side. In the embodiment, a wireless communication unit which can transmit/receive data even if no power is supplied receives job information from an external terminal, and stores it in a non-volatile memory. When an information processing apparatus is supplied with power, and enters a normal activation state, it executes the job stored in the non-volatile memory.

An image forming apparatus includes a temperature sensor, a holding unit that holds background temperature data that is obtained by the temperature sensor and indicates a temperature state in a surrounding of the image forming apparatus, an obtaining unit that obtains plural pieces of data generated by performing a calibration with respect to each of plural pieces of temperature data obtained by the temperature sensor after the background temperature data is held by the holding unit by using the background temperature data held by the holding unit, and a control unit that controls return of a state of the image forming apparatus from a power saving state based on the plural pieces of data obtained by the obtaining unit.

An image forming apparatus has a power supply portion, an operation panel, a document set portion, a plurality of sensing portions including a document set sensing portion that outputs a document set signal at a first level if the document is set, and control portions. The control portions, at transition to the power saving mode, stores flag data if the document set signal is at the first level, and when the level of any of the status signals from the plurality of sensing portions changes while in the power saving mode, even if the level of the document set signal is the first level, if the flag data is stored, the control portion maintains the electric power supply to the operation panel as the electric power supply expected in the power saving mode.

An image forming apparatus has an operation portion, an operation sensing portion, a human detecting portion, and a sensing period adjusting portion. The operation portion accepts operation by a user. The operation sensing portion senses operation on the operation portion. The human detecting portion detects the presence of a human body within a previously set detection distance. The sensing period adjusting portion adjusts a operation sensing period of the operation sensing portion based on the detection distance of the human detecting portion.

A power supply apparatus includes: a power supply circuit configured to generate a bias voltage and output the bias voltage to a load, the power supply circuit being configured to output a determination signal and a detection current signal, the determination signal being binarized and representing a result obtained by comparing a voltage value according to the bias voltage with a threshold, the detection current signal indicating a current value of a load current flowing between the power supply circuit and the load, the load current flowing in response to outputting of the bias voltage; and a controller configured to control generation of the bias voltage generated by the power supply circuit, and determine a malfunction of the power supply circuit and an abnormality in the load, based on the determination signal and the detection current signal.

A client apparatus that communicates with a management server to receive an instruction from the management server, and a power supply of the client apparatus transitions to a sleep state when the client apparatus does not receive a user operation for a certain time period, and after the power supply of the client apparatus transitions to the sleep state, the power supply of the client apparatus temporarily transitions to a normal state without receiving a user operation. After the client apparatus communicates with the management server, the power supply of the client apparatus transitions from the normal state to the sleep state.

An electronic device includes circuitry and a notification device. The circuitry is configured to: receive an instruction of power supply; supply power in response to the instruction of power supply; and execute an activation program to activate the electronic device, in response to the power supplied. The notification device is configured to provide information indicating that activation of the electronic device is complete, in response to a finish of execution of the activation program. The circuitry is configured to continue or stop supplying the power depending on whether the circuitry continues receiving the instruction of power supply until the finish of execution of the activation program. The circuitry is configured to continue supplying the power after the finish of execution of the activation program.

A printing control apparatus connected to a printing apparatus operated in a standby state and a power saving state includes a reception unit that receives a printing request for causing the printing apparatus to execute printing, a generation unit that generates printing data in accordance with the printing request received by the reception unit, a determination unit that determines whether or not the printing apparatus is in the power saving state, and a transmission unit that transmits return data for returning the printing apparatus from the power saving state to the standby state before the printing data generated by the generation unit is transmitted in a case where the determination unit determines that the printing apparatus is in the power saving state, and does not transmit the return data in a case where the determination unit determines that the printing apparatus is not in the power saving state.