An image forming apparatus includes a print engine, a power supply apparatus, and a processor. The print engine is to print an image. The power supply apparatus is to supply power to the image forming apparatus and have a zero cross detection circuit to output zero cross information of input alternating circuit (AC) power. The processor is to determine whether the AC power is input using an output signal of the zero cross detection circuit. In response to an operation mode of the image forming apparatus being a normal mode, the zero cross detection circuit outputs zero cross information on a full wave of the input AC power. In response to an operation mode of the image forming apparatus being a power-saving mode, the zero cross detection circuit outputs zero cross information on a half wave of the input AC power.

A scanner includes: a pulse generator that generates a pulse signal; a transmissive optical sensor including a photo transmitter that projects pulsed light in response to the pulse signal and a photo receiver facing the photo transmitter; a charge-discharge unit capable of storing an electric charge of the pulse signal and discharging the stored electric charge; and a controller that causes the charge-discharge unit to discharge the electric charge when the photo receiver receives the pulsed light, causes the charge-discharge unit to store the electric charge when the photo receiver does not receive the pulsed light, and that starts supply of power to a CPU when an amount of the electric charge is at or above a threshold.

An image forming device is provided with a signal output unit which outputs an interrupt signal when storage of a print job input from the outside in a memory is completed, a processor which switches the operation mode to a normal mode when an operation mode of the own device is a power saving mode when an interrupt signal output from the signal output unit is input, executes each of the print jobs stored in the memory, and switches the operation mode to the power saving mode after the completion of printing, and a signal delay unit which can delay the input of the interrupt signal output from the signal output unit to the processor when the operation mode is the power saving mode.

A control method performed by an apparatus that communicates with a device and that includes a display screen includes causing the display screen to display a first screen including a scan object used for scanning and a predetermined object different from the scan object, and causing the display screen to display, as a screen corresponding to the scan object, a second screen including a scan setting item. In addition, the display screen is caused to display, as a screen corresponding to the predetermined object, a third screen that does not include the scan setting item and that includes information for prompting a user to put the apparatus close to the device.

An image forming apparatus communicates with another device and includes a processor that controls the communication. A control unit controls the apparatus to operate in one of at least a first power saving state, a second power saving state, and a normal state. In the first power saving state, the apparatus is controlled so that an image forming unit, an image reading unit, and the control unit are not activated, and a communication device is activated. In the second power saving state, the apparatus is controlled so that at least one of the image forming unit and the image reading unit are not activated, and the communication device and the control unit are activated. In the normal state, the apparatus is controlled so that at least the image forming unit, the image reading unit, the communication device, and the control unit are activated.

An image forming apparatus includes an image forming unit, an output unit, a light source, and a processor. The image forming unit creates a printed material by forming an image on paper. The output unit outputs the printed material to an output tray. The light source is provided such that lit light is viewable from outside the image forming apparatus. The processor is configured to receive a print job for creating the printed material by the image forming unit, and perform control such that the light source is lit in a first lighting pattern in a case where a printed material of a print job for a single user has been output to the output tray and the light source is lit in a second lighting pattern in a case where printed materials of print jobs for multiple users have been output to the output tray.

A control device includes a processor and a first storage portion. The processor executes a control process based on data stored in a main memory. The first storage portion stores a first memory image related to the main memory after a process of starting-up an operating system by the processor is completed. The control device loads the first memory image into the main memory if the operating system is started up.

A control apparatus includes a processor, a storage controller, and a boot loader memory. The processor executes a control process using data stored in a main memory. The storage controller includes a storage device, stores stored data in an encrypted state if an encryption function is enabled, and stores the stored data in the storage device in a non-encrypted state if the encryption function is disabled. The stored data includes a memory image related to a state of the main memory after completion of an activation process of an operating system. The boot loader memory is configured to store instructions that cause the processor to (a) activate the operating system using the memory image in response to a determination that the encryption function is disabled and (b) activate the operating system without using the memory image in response to a determination that the encryption function is enabled.

According to one embodiment, the charging circuit includes the control unit maintains an ON state of the main switching element by being driven within the predetermined time after power is input to the input unit and stopping the function of the time constant circuit, and when the full charge detection unit detects the fully charged state, the control unit turns off the main switching element by restoring the function of the time constant circuit after the predetermined time is elapsed.

An image reading device including a reading transmission function of transmitting read data, generated by reading an original document, to a storage destination for storing the read data, the storage destination being included in an external device, the image reading device including a control unit configured to execute a communication test for determining whether communication with the storage destination is successfully performed, wherein the control unit includes a manual test mode for starting the communication test in response to an execution instruction of the communication test from a user and an automatic test mode for starting the communication test when a starting condition for starting the communication test is satisfied.