An image-forming apparatus includes a photosensitive drum, a developing roller, a collecting roller, a belt, a cleaner, and a controller. In response to receiving a signal, the controller performs a process staring with a first process and ending with a second process. The controller rotates the developing roller at a contact position at a first speed in the first process. The controller causes the collecting roller to move residual toner to the belt to allow the cleaner to clean the belt while the developing roller is separated from the photosensitive drum in the second process. The process further includes: (a) causing the developing roller to halt rotating while maintaining the developing roller at the contact position; and (b) causing the developing roller halted in the (a) causing to start rotating at a second speed lower than the first speed while maintaining the developing roller at the contact position.

Example implementations relate to data connection printing. For example, a printing device may include a wireless data connection and a wired data connection. The printing device may include an engine controller including a processing resource and a memory resource coupled to the processing resource, where the memory resource stores instructions executable by the processing resource to determine whether a print job is received via the wireless data connection or the wired data connection and based on the determination, print the print job in a print mode corresponding to either the wireless data connection or the wired data connection.

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.

A power supply control device includes a moving object detecting unit and a power supply unit. The moving object detecting unit is attached to a processing apparatus body including power supply targets and a controller, and is capable of detecting a moving object moving in the vicinity of the processing apparatus body. The moving object detecting unit has a lower detection range for detecting a part of a moving object that is substantially in contact with the floor, and an upper detection range for detecting a top part of a moving object. The power supply unit is included in the controller and is always supplied with power to monitor approach of a moving object with the moving object detecting unit. The power supply unit supplies, upon the moving object detecting unit detecting a moving object, power to a power supply target that includes a part of the controller.

An electronic apparatus is provided that operates in a first state, a second state that consumes less energy than the first state, and a third state that consumes less energy than the second state. The electronic apparatus includes a switch that activates or cancels an automatic power-on function of the electronic apparatus, and a processor that shifts the electronic apparatus from the first state to the second state, in a case where, when the electronic apparatus is in the first state, a state transition condition for shifting the electronic apparatus to another state that consumes less energy than the first state is satisfied, and the automatic power-on function is active, and shifts the electronic apparatus from the first state to the third state, in a case where the state transition condition is satisfied and the automatic power-on function is inactive.

A detection unit detects a presence of an individual near an image forming apparatus during a sleep mode in which an image forming unit, an image reading unit, and a user interface unit enter a sleep state of non-conduction. An individual specifying unit specifies the individual detected by the detection unit. A determination unit determines whether there is a printing job corresponding to the individual specified by the individual specifying unit. A control unit warms up a heater by causing the fixer to transition from the sleep state to a ready state when the determination unit determines that there is the printing job corresponding to the individual specified by the individual specifying unit. Conversely, the control unit maintains the fixer in the sleep state when the determination unit determines that there is no printing job corresponding to the individual specified by the individual specifying unit.

An image forming apparatus capable of switching power state between a first power state and a second power state, which is lower in power than the first power state, shifts from the second power state to the first power state. In a case where the image forming apparatus shifts to the second power state in response to a current time reaching a set time, the image forming apparatus is controlled not to shift from the second power state to the first power state in response to an object approaching the image forming apparatus being detected.

An image forming apparatus includes at least one photoconductor unit including a charging roller and a photoconductor. A charging bias obtained by superimposing an AC voltage on a DC voltage is applied to the charging roller. The photoconductor is disposed opposite the charging roller across a gap. An electrostatic latent image is formed on the photoconductor based on image data. The image forming apparatus further includes a high-voltage power supply to generate an output feedback voltage, a control unit as circuitry to control the high-voltage power supply based on the output feedback voltage and refer to first data to calculate the gap value corresponding to the voltage indicated by the output feedback voltage. The first data indicates a relation between the voltage indicated by the output feedback voltage and a gap value indicating a size of the gap.

An image-forming apparatus includes a photosensitive drum, a developing roller, a collecting roller, a belt, a cleaner, and a controller. In response to receiving a signal, the controller performs a process staring with a first process and ending with a second process. The controller rotates the developing roller at a contact position at a first speed in the first process. The controller causes the collecting roller to move residual toner to the belt to allow the cleaner to clean the belt while the developing roller is separated from the photosensitive drum in the second process. The process further includes: (a) causing the developing roller to halt rotating while maintaining the developing roller at the contact position; and (b) causing the developing roller halted in the (a) causing to start rotating at a second speed lower than the first speed while maintaining the developing roller at the contact position.

The switching power supply apparatus including a transformer includes a detection unit configured to detect that the power supply apparatus malfunctions and a first holding unit configured to turn off a first switching element and holds the first switching element at turn-off condition, and when the detection unit detects that malfunction occurs, the first holding unit releases the first switching element from the turn-off condition at a timing when the control unit turns on the second switching element by a second control signal.