An image forming apparatus is provided. The image forming apparatus includes a print engine to perform a print job by using a toner filled in a toner cartridge, a communication apparatus to communicate with a memory chip attached to a toner refill apparatus refilling the toner in the toner cartridge, and a processor to, based on an error being found in a toner injection process for the toner cartridge by using the toner refill apparatus, store information related to the error in the toner cartridge.

A paper guide member includes plural thread-shaped protrusions extending in a passing direction of paper to guide the paper after a toner image is transferred so that the paper passes with a distance secured from a static eliminator that eliminates static electricity in proximity to the paper in a width direction of the paper. The plural thread-shaped protrusions adjoin each other across a slit in the width direction of the paper. The plural thread-shaped protrusions include first thread-shaped protrusions each having a height at which the paper is supported and guided, and second thread-shaped protrusions each having a height smaller than the height of each of the first thread-shaped protrusions and present in regions on an outer side of both ends in the width direction of each passing region where paper having each width passes.

An image forming apparatus comprises a housing including a resin frame. The resin frame is divided in a sheet feeding direction to include a conveyance frame, a process frame and a fixation frame. Moreover, the image forming apparatus comprises a driving unit and a drive frame. The driving unit is attachably and detachably provided in the drive frame, and applies a rotational driving force to rotating bodies. The drive frame is positioned with respect to the conveyance frame or the process frame, supports the rotating bodies, and has an attaching portion for the driving unit. Moreover, the drive frame is attached to one surface of the resin frame.

The image forming apparatus including a fixing unit having a heat generation member; a switch unit configured to connect or disconnect a power supply path from an AC power supply to the heat generation member; a temperature detection unit configured to detect a temperature of the heat generation member; a control unit configured to perform operations to supply power to the heat generation member by controlling the switch unit according to a detection result of the temperature detection unit; a setting unit configured to set the switch unit to a state in which the switch unit cuts off the power supply path upon detecting an overheating state of the heat generation member based on a detection result of the temperature detection unit; and a first switch configured to supply or cut off a first driving voltage that drives the setting unit.

A power supply device includes a rectification circuit that is supplied with AC power from an AC power supply, a power factor improvement circuit that boosts an output voltage of the rectification circuit, smooths a boosted voltage with a capacitor, and thereby generates a DC output voltage outputted to a load circuit, a DC-DC converter that steps down the DC output voltage to a prescribed first voltage, a DC output voltage detection circuit that detects whether or not the DC output voltage satisfies a prescribed condition, and a switch circuit that temporarily puts the power factor improvement circuit in an operating state by use of the first voltage each time the prescribed condition is satisfied in a period in which the power factor improvement circuit is in a stopped state due to an energy saving mode of the load circuit.

An image forming apparatus includes an image forming device, a sheet feeder, and a housing. The image forming device forms an image on a recording medium. The sheet feeder stores the recording medium and conveys the recording medium toward the image forming device. The housing accommodates an electrical device in the housing. The housing includes a housing body and a drawer that is drawn out from the housing body. The drawer includes a bottom plate on which the electrical device is placeable and a partition above the bottom plate on which the electrical device is placeable.

An image forming apparatus includes a paper tray, an elevating plate, a cam, and a shutter. The paper tray is configured to hold sheets. The elevating plate on the paper tray is arranged to ascend and descend between a descended position and an ascended position higher than the descended position. The cam is movable between a first position and a second position. The shutter includes a shielding portion. The shielding portion is located at a shielding position when the cam moves to the first position. The shielding position is a position that overlaps with a region in a height direction occupied by the cam at the second position. The shielding portion retracts from the shielding position when the cam has moved from the first position to the second position.

An image processing apparatus and a method of controlling the image processing apparatus are provided. The image processing apparatus holds a type of image data and a setting item of image processing corresponding to the type in association with each other, and obtains, by applying a learned learning model to image data which are input, a result of classifying the image data into the type. The image processing apparatus presents, based on the setting item input by a user and the held setting item that corresponds to the type of the obtained image, a recommended setting item corresponding to the image data to the user.

An apparatus according to the aspect of the embodiments includes a phase determiner configured to determine a rotational phase of a rotor, a speed determiner configured to determine a rotational speed of the rotor, a controller having a first control mode for controlling the motor by supplying constant currents to windings, and a discriminator configured to discriminate whether a rotation of the motor is abnormal based on the rotational speed when the rotational speed corresponding to a command speed is equal to or higher than a predetermined value in a state where the controller is controlling the motor in the first control mode. When a signal output from the discriminator indicates that the rotation of the motor is abnormal, the controller stops the motor. When the signal output from the discriminator indicates that the rotation is not abnormal, the controller continues a drive of the motor.

A rotating body to be inserted with a shaft includes a holding portion on an end portion of the rotating body to hold the rotating body on the shaft. The holding portion includes a hook to be elastically deformable and detachably hook on a recess of an end portion of the shaft. The holding portion is rotatingly movable, with elastic deformation of the hook, over a convex portion of the shaft that is outside the recess in an axial direction of the shaft.