Abstract: A cartridge includes a drum unit and a development unit. The drum unit includes a photosensitive drum, a frame, a transfer roller, and a cleaning member. The development unit includes a development roller, and a memory. The cleaning member is configured to come into contact with the photosensitive drum at a region between a development nip portion and a transfer nip portion in a circumferential direction of the photosensitive drum and at an end portion of the photosensitive drum in a direction of the rotational axis. The frame has an exposing hole through which the memory is exposed from the frame, and a recessed portion that is adjacent to the exposing hole in the direction of the rotational axis, and stores foreign matters removed from the photosensitive drum by the cleaning member.

Abstract: An image forming apparatus fixes a toner image onto a sheet by a fixer, and includes: a re-feeding path that normally conveys the sheet having passed through the fixer and guides the sheet toward the fixer; and a hardware processor that switches between first control to discharge the sheet having passed through the fixer toward a discharge destination and second control to re-feed the sheet having passed through the fixer to the fixer through the re-feeding path, depending on a type of an image which is a source of formation of the toner image.

Abstract: An exposure head includes a light emitter, a plurality of switches, a transmission line, and a plurality of delay circuits. In the light emitter, a plurality of light emitting elements are arranged in a first direction. The switches are provided respectively corresponding to the light emitting elements. The switches are configured to perform switching such that, when a drive signal is input, a drive current flows through a light emitting element corresponding to the drive signal. The transmission line is configured to supply a drive signal to the switches. The delay circuits are provided respectively corresponding to the switches. The delay circuits are configured to delay the drive signal that is supplied to the switches through the transmission line in order from a first end side to a second end side of the light emitting elements arranged in the first direction.

Abstract: An electronic apparatus includes a motor, a first power supply unit, a second power supply unit, a control unit, and a delay unit. The first power supply unit supplies a first voltage to the motor. The second power supply unit supplies a second voltage higher than the first voltage to the motor. The control unit supplies and stops supplying the second voltage from the second power supply unit to the motor while supplying the first voltage from the first power supply unit to the motor. The delay unit delays a rise in the second voltage supplied from the second power supply unit to the motor.

Abstract: A heating device includes: a rotating body; a heating body as defined herein; and a contact mechanism, in a non-existence state where a material to be heated does not exist between the rotating body and the heating body after the material to be heated passes between the rotating body and the heating body, configured to cause the rotating body to be in contact with the heating body at a central portion of the rotating body in a rotation axis direction of the rotating body, so that an area of the rotating body in contact with the heating body is smaller at each of both end portions of the rotating body than at the central portion of the rotating body in the rotation axis direction, or configured to switch the rotating body between a first contact state and a second contact state as defined herein.

Abstract: In a case in which an image forming apparatus determines that a replaceable unit is replaced in a first state, in which removal of the replaceable unit is inhibited, the image forming apparatus performs control to switch from the first state to a second state, in which removal of the replaceable unit is allowed.

Abstract: An image forming apparatus includes an image forming unit configured to form an image using developer, a mount section on which a container containing the developer is mounted, a drive mechanism that includes a motor that rotates to supply the developer to the image forming unit from the container mounted on the mount section, and a controller configured to obtain an output value related to a load of the motor while rotating the motor without mounting the container on the mount section after the container is detached from the mount section, and detect a failure of the container detached from the mount section based on the output value.

Abstract: An image forming apparatus includes a first unit, a second unit, a first adjusting member, and a second adjusting member. The first unit includes an endless first belt member and a first rotating member that rotates while supporting the first belt member. The second unit includes a rotatable second rotating member that opposes the first rotating member with the first belt member interposed therebetween. The first adjusting member is disposed on either one of the first unit and the second unit to adjust a load between the first rotating member and the second rotating member. The second adjusting member is disposed on the other one of the first unit and the second unit to adjust parallelism between the first rotating member and the second rotating member.

Abstract: An image forming apparatus includes a fixing device, control circuitry, and a controller. The fixing device includes a first rotating body, a second rotating body in pressure contact with the first rotating body, and a heat source to heat the first rotating body. The circuitry, at startup of the fixing device, causes the fixing device to perform a rotating operation to rotate the first rotating body while causing the heat source to perform a heating operation to heat the first rotating body, thereby performing a fixing startup operation to raise a temperature of the first rotating body. The circuitry delays at least one of a timing for start of the rotating operation and a timing for start of the heating operation to be later than a start of a controller startup operation such that the fixing startup operation is completed in time with completion of the controller startup operation.

Abstract: Toner cartridge includes a housing, an agitator, an auger, a first protrusion, and a second protrusion. The housing includes a first toner accommodating portion having and a second toner accommodating portion. The auger is rotatable about a second axis extending in a first direction and is configured to convey toner from a first toner accommodating portion to the second toner accommodating portion. The first protrusion is positioned at a first side of the second toner accommodating portion. The first protrusion extends in the first direction. The second protrusion is positioned at a second side of the second toner accommodating portion and extends in the first direction.

Abstract: A power supply apparatus includes a plurality of power supply boards and a cooler. The power supply boards supply power. The cooler cools the power supply boards. The power supply boards are disposed in rows in a front-back direction and stepwise so as to be disposed more upward as disposed more forward.

Abstract: A primary transfer roller is disposed upstream or downstream from the center of rotation of a photosensitive drum in the moving direction of an intermediate transfer belt. The primary transfer roller includes a core metal and an elastic layer coating the outer circumference of the core metal and having a thickness of less than 2.0 mm. The primary transfer roller has an Asker-C hardness of 40° or higher and 85° or lower.

Abstract: An approach is provided for monitoring and reporting capacity of a toner cartridge in a printing device. The printing device determines estimated toner levels based on actual toner levels obtained from a toner sensor of the printing device. The estimated toner levels are determined based on a first actual toner level and a second actual toner level obtained from the toner senor and print usage between the two actual toner levels. The estimated toner levels are determined for levels below the second actual toner level and are mapped to synthetic toner levels. Visual indications of the synthetic toner levels are displayed on the printing device.

Abstract: An image forming apparatus according to one or more embodiments includes a fixing device and a controller. The fixing device includes a first heating source and a second heating source. The second heating source has a heating width greater than that of the first heating source. The first and second heating sources have different heating characteristics in response to temperature increases. The controller selects one of the first heating source and the second heating source according to a size of a sheet on which printing is to be performed.

Abstract: A toner supplying apparatus used in an image forming apparatus is provided. The toner supply apparatus includes a plurality of toner containers, a plurality of fixing members, an operating member, and a driving force. Each of the plurality of toner containers includes a fixing recess. The plurality of fixing members are to be selectively coupled to the fixing recesses of the plurality of toner containers. The operating member is to slide with respect to the plurality of toner containers, and to operate at least one of the plurality of fixing members to separate the operated fixing members from the coupled fixing recess. The driving device is to move the operating member.

Abstract: An image forming apparatus includes an image carrier, a first peel-off unit whose end portion is in contact with the image carrier and that peels off a recording medium from the image carrier, and a second peel-off unit whose end portion is not in contact with the image carrier and that peels off a recording medium from the image carrier. The second peel-off unit is disposed in such a way that the end portion thereof is located at a position that is the same as or upstream of a position of the end portion of the first peel-off unit in a rotation direction of the image carrier, and the second peel-off unit is movable so that the end portion thereof moves away from the image carrier.

Abstract: An image forming apparatus includes an image bearing member, a transfer member, a voltage source, a current detecting portion, and a controller. In a case that the predetermined voltage is changed in a first job on the basis of the detection result of the current detecting portion during passing of the recording material through the transfer portion, in a second job subsequent to the first job, when a first recording material of the second job passes through the transfer portion, the controller changes a voltage applied to the transfer member on the basis of the predetermined voltage changed in the first job.

Abstract: A gear assembly for an imaging device includes a drive gear positioned to receive rotational force from the imaging device, and a driven gear positioned to mesh with and receive rotational force from the drive gear for rotating a photoconductive member. As the photoconductive member rotates, a rotational location on the drive gear that meshes with the driven gear when a latent image is formed on the photoconductive member is the same said rotational location on the drive gear that meshes with the driven gear when a toned image of the latent image is transferred from the photoconductive member to an image receiving medium.

Abstract: An image forming apparatus includes a rotatable image bearing member to bear an electrostatic latent image, a developing container to accommodate developer including toner and to allow new developer to be replenished by a developer replenishing container, and a developer bearing member to develop the electrostatic latent image into a toner image by using the developer in the developing container. A transfer roller transfers the toner image born on the image bearing member onto the recording material, and a controller notifies replenishment information for prompting replenishing the developing container with the new developer by the developer replenishing container. The controller notifies the replenishment information in a state in which an index correlated with a ratio of an amount of paper dust mixed in the developer in the developing container to an amount of the developer in the developing container has not exceeded a preset threshold value of the index.

Abstract: An image forming apparatus includes a conveyance unit, an irradiation unit, an image capturing unit configured to capture a plurality of times the light radiated by the irradiation unit and reflected on the recording material as surface images, an image formation unit, and a control unit, wherein the conveyance unit accelerates or decelerates a conveyance speed of the recording material in at least a part of an image capturing period during which the image capturing unit captures the surface images the plurality of times, and wherein the control unit obtains a feature quantity from a plurality of surface images captured by the image capturing unit and controls the image forming condition based on the obtained feature quantity and a threshold value set according to the conveyance speed of the recording material in the image capturing period.