Abstract: In an image forming apparatus which includes a plurality of image forming units each including an image bearing member, a contact charging member, and a developer bearing member for forming toner of normal polarity, and which, in a printing operation, applies a charging bias having a first direction, in a cleaning operation, applies a charging bias having a second direction, and recovers residual toner remaining on the image bearing member which was not used for printing by the developer bearing member, before performing the cleaning operation, when successively performing the printing operation on a plurality of recording materials including a first recording material and a second recording material, which is used for printing following the first recording material, the charging voltage larger in absolute value in the printing operation for the second recording material than in the printing operation for the first recording material is applied.

Abstract: A cleaning device cleans a surface of a toner carrier carrying a toner, and the cleaning device includes: a first blade in contact with the surface of the toner carrier; a second blade made of a material harder than a material of the first blade and in contact with the surface of the toner carrier; and a lubricant applicator that applies a lubricant to the surface of the toner carrier, wherein the first blade, the second blade and the lubricant applicator are arranged in this order from an upstream side in a moving direction of the toner carrier based on a transfer position of the toner.

Abstract: An image forming apparatus is provided. The image forming apparatus includes a chassis having an opening, a cover, photosensitive members, an intermediate transfer belt, a primary-transfer member, a secondary-transfer roller, a cleaner device, an external-sheet inlet, a waste toner container, a connector, and a conveying roller, which is arranged within the feeding path to feed the recording sheet inserted through the external-sheet inlet in the feeding path. The conveying roller is mounted on the waste toner container and removable from the chassis along with the waste toner container.

Abstract: The image forming apparatus includes an image carrier, a transferring member and a cleaning device. The cleaning device includes a cleaning member, a case and a toner seal. A refresh mode including a first operation and a second operation is executable when an image forming operation is not performed. The first operation is executed such that the image carrier is rotated in a counter direction and for a predetermined distance or longer. The counter direction is a direction opposite to the rotation direction of the image carrier at the image forming operation. The predetermined distance is a distance from a contact position where the cleaning member comes into contact with the surface of the image carrier to a transferring position where the transferring member transfers the toner image. The second operation is executed such that the transferred body is driven and the transferring member is applied with transferring bias.

Abstract: A cleaning apparatus includes: a brush that contacts a transfer member and cleans and removes toner existing on the transfer member; a constant current type voltage applier that applies voltage to the brush; and a hardware processor that determines whether a condition that voltage exceeds a predetermined threshold is satisfied at a nip formed by the brush and the transfer member contacting each other, and controls the voltage by changing bias current of the voltage applier, wherein the transfer member has a sheet contact area contacting a sheet on the transfer member and an inter-sheet area other than the sheet contact area on the transfer member, and in a case where the hardware processor determines that the condition is satisfied, the hardware processor controls the voltage so as not to exceed the predetermined threshold by changing the bias current when the sheet contact area passes through the nip.

Abstract: An image forming apparatus includes an image bearing member, a transfer roller, a power feeding rotary member, and a controller. The controller is configured to execute the cleaning mode such that a period in which the cleaning mode is executed comprises a first application period during which a reverse polarity bias having a polarity reverse to that of the transfer bias is continuously applied to the power feeding rotary member, and a second application period during which a same polarity bias having a same polarity with that of the transfer bias is continuously applied to the power feeding rotary member.

Abstract: The image forming apparatus includes a control unit that executes a supply operation to supply a toner charged with a regular charge polarity, to at least one abutting portion of a plurality of abutting portions, at the time of image non-formation, the plurality of abutting portions being formed by a plurality of cleaning members and a plurality of image bearing members, the control unit determining an image bearing member to which the most amount of the toner charged with the regular charge polarity is supplied, based on image formation information, the image formation information being information about an image formation executed before the supply operation is executed.

Abstract: An image forming apparatus includes a transfer member which transfers a toner image formed on an image bearing member to a transfer material; a transfer bias application unit which applies bias to the transfer member; a controller which executes a mode for making a first bias applied to a first predetermined area arranged at a leading edge of a transfer material with respect to a conveying direction of the transfer material to be less than a second bias applied to a second predetermined area arranged in a central area of the transfer material; and an obtaining portion which obtains image information of an image formed in each area obtained by dividing an area corresponding to the leading edge area into plural pieces in the width direction, wherein the controller controls the first bias based on image information obtained by the obtaining portion at the time of the mode.

Abstract: An image forming apparatus includes a control unit that causes a supply operation to form a predetermined toner image and supplies toner of the predetermined toner image to a contact portion between a cleaning member and a photosensitive member at a non-image forming time. During at least a period in which toner of the predetermined toner image on the photosensitive member passes through a transfer unit during the supply operation, the control unit causes application of a pass-through voltage having the same polarity as a normal charge polarity of the toner and an absolute value that is less than an electric potential of a portion that is exposed by an exposure device of the photosensitive member, or having a reverse polarity that is reverse to the normal charge polarity of the toner to be applied from the transfer power supply to the transfer member.

Abstract: An image forming apparatus includes an image carrier, a removal roller, a collection roller, a housing, a screw, and a seal. The removal roller rotates while in contact with the intermediate transfer belt and removes residual toner from the intermediate transfer belt. The collection roller rotates while in contact with the removal roller so as to collect, from the removal roller by electrostatic force, waste toner that is the residual toner removed by the removal roller. The housing has an upper opening for receiving the waste toner collected by the collection roller and stores the waste toner. The screw conveys the waste toner stored in the housing. The seal comes into contact with the collection roller and closes a gap between the collection roller and the housing at the upper opening.

Abstract: An electrophotographic photoreceptor includes: a cylindrical base body having a two-step stepped chamfer between a base body outer peripheral face and a base body end face; and a surface layer located on the base body outer peripheral face. The cylindrical base body has an outer chamfered face and an inner chamfered face lying closer to an end face than the outer chamfered face. A length L2 of the inner chamfered face is larger than a length L1 of the outer chamfered face, namely L1<L2, as viewed in lateral section taken along a rotation axis of the cylindrical base body.

Abstract: A cleaning device includes a blade and a seal member including a first portion having first, second and third surfaces and including a second portion having a fourth surface. The first surface opposes a free end surface of the blade. The second surface is connected with the first surface. The third surface is connected with the first and second surfaces and is perpendicular to the free end surface. The fourth surface is parallel to the third surface and the free end surface. A first interior corner line is formed by the free end surface and the third surface so as to be substantially parallel to a thickness direction of the blade. A second interior corner line is formed by the third surface and the fourth surface so as to be connected with said first interior corner line and be substantially parallel to a height direction of the blade.

Abstract: An image forming apparatus includes a cleaning blade that is in contact with the photoconductive member to form a nip portion and that is configured to remove an adhering substance adhering to the photoconductive member and an execution unit configured to execute a supply operation of forming a supply toner on the photoconductive member to supply the supply toner to the nip portion after completion of an image forming job of forming an image on one or a plurality of printing media in a series of operations and before the photoconductive member stops rotation. The execution unit sets the amount of supply toner such that the number of images formed at the image forming job and the amount of supply toner have a linear relationship.

Abstract: In a belt cleaning device, a pivot member supports a first rotation shaft of a cleaning roller in a rotatable manner, and is supported by a second rotation shaft of a collection roller. An elastic member keeps the cleaning roller contact with an endless belt at a position. A first seal portion, fixed to the pivot member, is in contact with the collection roller. A housing has a first space storing the cleaning roller and the collection roller, and a second space storing waste toner rubbed off from the collection roller by a blade. The housing supports the second rotation shaft. The second seal portion is fixed to one of an inner surface of the housing and the pivot member, and is in contact with the other. The blade, the first seal portion, and the second seal portion partition the housing into the first space and the second space.

Abstract: A transfer device includes a conveyance belt, a transfer roller, a stretch roller, and a cleaning member. The conveyance belt is configured to convey a sheet via a contact position with an image carrier. The transfer roller is configured to transfer the toner image onto the sheet at the contact position. The stretch roller is configured to stretch the conveyance belt at a separation position where the sheet is separated from the conveyance belt and the stretch roller is grounded via a resistance portion having electrical resistance. The cleaning member is provided to oppose the stretch roller across the conveyance belt, downstream, in a running direction of the conveyance belt, from the separation position, and is configured to attract the toner attached to a surface of the conveyance belt upon application of a voltage having a polarity opposite to the charge polarity of the toner.

Abstract: An image forming apparatus is provided. The image forming apparatus includes a chassis having an opening, a cover, photosensitive members, an intermediate transfer belt, a primary-transfer member, a secondary-transfer roller, a cleaner device, an external-sheet inlet, a waste toner container, a connector, and a conveying roller, which is arranged within the feeding path to feed the recording sheet inserted through the external-sheet inlet in the feeding path. The conveying roller is mounted on the waste toner container and removable from the chassis along with the waste toner container.

Abstract: An image forming apparatus charges toner on a transfer belt by using a first brush and collects the toner, in which a second brush is provided on the upstream side of the first brush, and the amount of inroad of the second brush into the transfer belt is larger than the amount of inroad of the first brush into the transfer belt.

Abstract: A cleaner includes first and second cleaning plates. The first cleaning plate includes a first free end and performs cleaning by causing the first free end to be in contact with an outer circumferential surface of a cylindrical second transfer rotating body including an elastic layer, so that the outer circumferential surface is elastically deformed. The second cleaning plate includes a second free end and performs cleaning by causing the second free end to be in contact with a portion of the outer circumferential surface downstream of, in a rotational direction of the second transfer rotating body, a position where the first free end is in contact with the outer circumferential surface and where the outer circumferential surface is elastically deformed due to the contact of the outer circumferential surface with the first free end so as to have a smallest surface curvature in the outer circumferential surface.

Abstract: A transfer device includes an endless belt having a surface roughness Rz ranging approximately from 0.05 ?m to 0.15 ?m and a cleaning blade that serves to clean the belt and that includes a resin substrate having a substantially planar shape and a coating layer covering at least one edge of the resin substrate, wherein the coating layer has a connection layer and a surface layer, the connection layer is disposed so as to face the interface with the resin substrate and contains diamond-like carbon and at least one selected from the group consisting of titanium nitride, titanium silicon, titanium tungsten, titanium carbide, and titanium carbonitride, and the surface layer covers the connection layer and contains diamond-like carbon.

Abstract: An image forming apparatus includes a voltage applying unit that applies a bias voltage for enabling a transfer unit to transfer a developer layer to a transfer medium, the developer layer being retained by an image carrier in accordance with image information; a measuring unit that measures a surface potential of the developer layer; and a setting unit that sets a value of the bias voltage to be applied by the voltage applying unit in accordance with the surface potential measured by the measuring unit, a combined electrostatic capacitance of a surface layer of the image carrier and the developer layer, and an electrostatic capacitance specific to the transfer medium.

Abstract: An image forming apparatus includes: an image holder that holds a toner image; a transferer that is disposed opposite to the image holder so as to be in contact with the image holder and transfers the toner image from the image holder onto a recording sheet that is going through a contact part where the transferer contacts the image holder, by applying a transfer voltage between the transferer and the image holder; a first power source that applies a voltage of a first polarity to the image holder; and a second power source that applies a voltage of a second polarity, which is reverse to the first polarity, to the transferer.

Abstract: A photo conductor cleaning device removes substances adhered to a surface of a photo conductor which moves around the axis of rotation. The photo conductor cleaning device is equipped with a device main body, a tip blade, and a flexible supporting sheet metal plate which holds the tip blade and makes the tip blade contact with the photo conductor. The supporting sheet metal plate is fixed to the device main body by two fixing portions which are places at different locations, as seen from a cross section perpendicular to the axis of rotation of the photo conductor. The supporting sheet metal plate is supported at the both ends by the two fixing portions support.

Abstract: An image forming apparatus includes an intermediate transfer belt and a developer unit. The image forming apparatus includes a cooling unit, a cleaning roller, and an auxiliary brush. The cooling unit cools a predetermined component by sending air by a fan inside the image forming apparatus. The cleaning roller removes remaining toner on the intermediate transfer belt at an upstream side of a region facing the developer unit in a rotationally moving direction of the intermediate transfer belt and at an upstream side of a region with which the image carrier is in contact in the intermediate transfer belt. The auxiliary brush located on an outer surface of the developer unit so as to close the clearance between the intermediate transfer belt and the developer unit and is in contact with the intermediate transfer belt to clean the intermediate transfer belt.

Abstract: An image-forming apparatus includes a main body, a belt unit detachably attachable to the main body, a coupling and a restricting part. The belt unit includes: a first roller defining an axis extending in an axial direction, a second roller opposing the first roller in a first direction perpendicular to the axial direction, and a belt looped over the first roller and the second roller. The coupling is configured to move in the axial direction to come into engagement with the first roller for inputting a drive force into the first roller. The restricting part is provided on the main body and is configured to restrict the first roller from moving in a second direction perpendicular to the axial direction and the first direction when the belt unit is attached to the main body.

Abstract: An image formation apparatus includes: an image carrier; a developing device which develops an electrostatic latent image formed on the image carrier as a toner image; a transfer device which transfers the toner image to a medium; a cleaning device which recovers toner remaining on the image carrier after the toner image is transferred; and a lubricant application adjustment mechanism which applies a lubricant on the image carrier and recovers toner present on the image carrier upstream of the cleaning device; and a controller which controls the lubricant application adjustment mechanism. The controller causes the lubricant application adjustment mechanism to recover more toner when the toner image formed on the image carrier has a larger image area ratio.

Abstract: A belt unit is detachably attachable to a body of an image forming apparatus. The belt unit includes a belt, a pressing member, and a frame. The belt is wound around a plurality of supports to travel in a belt travel direction. The belt includes a base layer and an elastic layer. The pressing member presses warping on an edge of the belt. The frame supports the plurality of supports. The pressing member is positioned on the frame.

Abstract: A high-voltage power supply that outputs high voltages having a predetermined polarity and a reverse polarity performs control in a manner that, during a transition period in which switching of a target voltage of the high voltage having the reverse polarity from the predetermined polarity is performed, a setting value in accordance with a voltage higher than a target voltage is set as the voltage having the reverse polarity, and then a setting value in accordance with the target voltage is set as the voltage having the reverse polarity.

Abstract: Provided is an image forming apparatus including: an image bearing member; a charging member configured to charge the image bearing member; a voltage applying device configured to apply a voltage to the charging member; and a control unit configured to control the voltage applying device so as to perform a cleaning mode for applying an AC voltage to the charging member with the voltage applying device while moving a surface of the image bearing member during non-image formation of the image forming apparatus, wherein a period of time during which the cleaning mode is performed includes a first time-period during which a first AC voltage is applied and a second time-period during which a second AC voltage is applied, and a period of the first AC voltage is different from a period of the second AC voltage.

Abstract: An image forming apparatus includes a rotatable image drum for carrying a toner image; a transfer member contacted to the drum to transfer the toner image from the drum onto a transfer member; a cleaning blade provided downstream of the transfer member with respect to a peripheral moving direction of the drum and having a free end portion contacted to the drum, the blade being configured to remove, with rotation of the drum, toner remaining on the drum after transfer of the toner image by the transfer member; and a toner retaining member cooperative with the drum to provide a toner accommodation space toner removed from the drum by the blade. The toner retaining member can retain a part of the toner accommodated in the toner accommodation space and capable of being deformed by the toner accommodated in the accommodation space to discharge the toner from the accommodation space.

Abstract: A transfer apparatus includes an image bearing member, a transfer member, a cleaning-bias output section, a first resistance-state detector, a second resistance-state detector, and a controller configured to control the cleaning-bias output section based on a first resistance state and a second resistance state, so as to change timing of ending outputting of a cleaning bias.

Abstract: An image forming apparatus includes: an image bearing member that is rotatable and supplied with toner to which lubricant has been added; a first cleaning section configured to remove the toner remaining on the image bearing member; a second cleaning section configured to remove the toner remaining on the image bearing member and left without being removed by the first cleaning section; and a control section that performs control to change removing performance in the first cleaning section.

Abstract: A pressurizing device includes: first and second rollers that holds a sheet-like medium with an image bearer formed on at least part of a surface of thereof between the first and second rollers and send the medium in a conveying direction while applying a pressure to the medium; a position control unit that performs feedback control of the position of at least one of the first and second rollers; a force control unit that performs feedback control of a force acting on between the first and second rollers; and a control-method switching unit that switches, after the position of the first and second rollers is switched from a separation position to a contact position by the feedback control performed by the position control unit, a feedback controlled object so that the force becomes a target value of nip pressure through the feedback control performed by the force control unit.

Abstract: An image forming apparatus includes a member-to-be-cleaned, a first cleaner unit including a first attracting member, a first rotatable member and a first blade member, a second cleaner unit including a second attracting member, a second rotatable member and a second blade member, and a feeding member. The feeding member rotates around its rotational axis and is provided vertically below a first position where a toner drops by gravitation and a second position where the toner drops by gravitation. The feeding member is disposed such that vertical lines passing through the first position and the second position cross the feeding member.

Abstract: An image forming apparatus includes an image bearer; a toner image forming device; an intermediate transferor; a primary transfer power source; a secondary transfer nip forming device; and a secondary transfer power source to output a secondary transfer bias. One of two peak values of the secondary transfer bias is a transfer peak value to provide a greater transfer-directional force to move toner from the intermediate transferor toward the recording medium in the secondary transfer nip. An absolute value of the transfer peak value is greater than an absolute value of the primary transfer bias.

Abstract: An image forming apparatus of the present disclosure includes a plurality of image forming portions, an intermediate transfer unit, a secondary transfer member, a belt cleaning device, and a control portion. The intermediate transfer unit includes an intermediate transfer belt, a plurality of primary transfer members, a drive roller, a tension roller, and a contacting/separating mechanism. The belt cleaning device includes a cleaning member which faces the tension roller with the intermediate transfer belt therebetween. In a withdrawal mode, the cleaning member is moved by pressing force of the tension roller further into a housing from an opening portion as compared with in a printing mode. The control portion is capable of executing, while image formation is not being performed, a transfer toner collection mode in which the intermediate transfer belt and the belt cleaning device are driven in the withdrawal mode.

Abstract: An image forming apparatus includes a plurality of image bearers, a transfer bias member, and a power source. When the transfer bias member transfers a color toner image onto a recording sheet, a second peak value of a peak-to-peak of a transfer bias, which is smaller than a first peak value of the peak-to-peak in an electrostatic force to move toner from the image bearers or an intermediate transfer body to the recording sheet, is zero or has a first polarity to generate the electrostatic force in a transfer direction to move toner from the image bearers or the intermediate transfer body to the recording sheet. When the transfer bias member transfers a monochromatic toner image including only black toner onto the recording sheet, the second peak value is zero or has a second polarity to generate an electrostatic force in an opposite direction to the transfer direction.

Abstract: An image forming apparatus includes a rotatable image bearer, a toner image forming device, a transfer device, a transfer bias power source, and a cleaner. The toner image forming device is to form a toner image on the image bearer. The transfer device contacts a surface of the image bearer to form a transfer nip between the transfer device and the image bearer. The transfer bias power source is to output a transfer bias to transfer the toner image from the image bearer onto a recording medium in the transfer nip. The cleaner is disposed downstream from the transfer nip in a direction of rotation of the image bearer, to electrostatically attract and remove toner from the surface of the image bearer to a surface of the cleaner. The transfer bias includes an alternating current component.

Abstract: An image forming apparatus includes a movable intermediary transfer member, a toner image forming unit, a rotatable transfer member, a fixing unit, a recording material feeding portion, an executing portion, and first and second cleaning units. The first cleaning unit includes a first brush roller, a first rotatable member and a first blade member. The second cleaning unit includes a second brush roller, a second rotatable member, a second blade member and a third blade member. The third blade member is disposed downstream of the cleaning portion and upstream of a contact portion, between the second rotatable member and the second brush roller, with respect to a rotational direction of the second rotatable member, and scrapes a deposited matter off the second rotatable member with the rotation of the second rotatable member.

Abstract: A cleaning device includes an upstream cleaner, an upstream cleaner, and a collection member. The upstream cleaner is configured to remove toner from a surface of a cleaning target. The downstream cleaner is disposed downstream from the upstream cleaner in a direction of movement of the surface of the cleaning target. The downstream cleaner is configured to remove toner from the surface of the cleaning target. The collection member is configured to collect toner from the downstream cleaner.

Abstract: An image forming apparatus is provided. The image forming apparatus includes a chassis having an opening, a cover, photosensitive members, an intermediate transfer belt, a primary-transfer member, a secondary-transfer roller, a cleaner device, an external-sheet inlet, a waste toner container, a connector, and a conveying roller, which is arranged within the feeding path to feed the recording sheet inserted through the external-sheet inlet in the feeding path. The conveying roller is mounted on the waste toner container and removable from the chassis along with the waste toner container.

Abstract: A transfer device includes a transfer unit including an image carrier that carries a toner image to be transferred to a transfer surface of a recording medium, a transfer member disposed on a non-transfer-surface side of the recording medium, and an opposing member disposed opposite the transfer member with the image carrier therebetween; a cleaning unit that cleans a surface of the transfer member; a first application unit that applies a voltage, for transferring the toner image, to the opposing member; and a second application unit that applies an alternating voltage to the transfer member.

Abstract: An image forming apparatus including a cleaning member having a belt cleaning blade and a conductive brush. A value of a charging current that is generated when charging residual toner with the conductive brush is smaller when a color mode is executed compared to that when a monochrome mode is executed.

Abstract: A developing device includes a casing to contain developer and a developer bearer disposed in the casing to bear developer, and a rough face repellent to developer is disposed inside the casing.

Abstract: An image forming system includes a post-processing unit capable of performing a post-processing on the sheet on which the toner image is formed. The image forming system is capable of executing a transfer cleaning operation to move toner from a transfer member to an image bearer by electrostatic force caused by cleaning bias applied by a bias applying unit in a state where the image bearer and the transfer member are rotated, to clean the transfer member, as an inter-sheet operation performed when at least one of inter-sheet areas that exist on the image bearer during a successive image forming period. The image forming system is capable of executing a rotation stop operation to stop rotation of the image bearer and the transfer member, as the inter-sheet operation when the post-processing is performed, in addition to the transfer cleaning operation, before or after the transfer cleaning operation is executed.

Abstract: A transfer device includes a conveyance belt, a transfer roller, and a stretch roller. The conveyance belt is in contact with an image carrier that carries a toner image, and conveys a sheet via a contact position with the image carrier. A voltage having a polarity opposite to a charging polarity of toner that forms the toner image is applied to the transfer roller, and the transfer roller transfers the toner image carried by the image carrier onto the sheet at the contact position. The stretch roller stretches the conveyance belt at a separation position in which the sheet is separated from the conveyance belt and which is downstream of the contact position in a conveyance direction in which the sheet is conveyed by the conveyance belt, and the voltage having the polarity opposite to the charging polarity of the toner is applied to the stretch roller.

Abstract: An image forming apparatus includes a main frame, a plurality of process cartridges, a cartridge-supporting body, a belt, a belt cleaning unit, a waste toner cartridge, and a collective conveying unit. Each drum-cleaning unit collects waste toner on a corresponding photosensitive drum. The cartridge-supporting body supports the process cartridges and is movable between an internal position inside the main frame and an external position outside of the main frame. The belt cleaning unit collects waste toner on the belt. The waste toner cartridge accommodates both waste toner collected from the photosensitive drums by the drum-cleaning units and waste toner collected from the belt by the belt cleaning unit. The collective conveying unit aggregates both waste toner collected from the photosensitive drums by the drum-cleaning units and waste toner collected from the belt by the belt cleaning unit and conveys the aggregated waste toner to the waste toner cartridge.

Abstract: An image forming apparatus includes an image carrier that holds a developer image on a surface of the image carrier, a cleaning member that removes a remaining developer that remains on the surface of the image carrier after the developer image is transferred to a transfer target by contacting the surface of the image carrier, an accumulation part that accumulates the remaining developer removed by the cleaning member, a supply member that supplies the remaining developer accumulated in the accumulation part to the surface of the image carrier, a carrying mechanism that carries an excess developer toward an outside, the excess developer being defined as developer overflowing from the accumulation part.

Abstract: To remove toner, which is primarily transferred onto an intermediate transfer member, from the intermediate transfer member, a digital multifunction peripheral includes a first control unit that controls a second bias applicator to apply to a secondary transfer roller a bias of the opposite polarity to the charged toner when the toner passes through a position where the secondary transfer roller is placed, and a second control unit that, after the operation of the first control unit, controls a second bias applicator to apply to the secondary transfer roller a bias of the same polarity as the charged toner and controls a pre-brush bias applicator to apply to a pre-brush a bias of the opposite polarity to the toner.

Abstract: An image forming device includes: a cartridge; a supporting member; a belt unit; a waste toner storage member; and a conveying member. The cartridge is configured to retain a photosensitive body. The belt unit includes a belt; and a cleaning member. The cleaning member removes residual toner remaining on the belt. The waste toner storage member stores the residual toner. The belt unit is movable between a contact position in which the belt contacts the photosensitive body and a separated position in which the belt is separated from the photosensitive body. The conveying member allows the residual toner to be conveyed from the cleaning member to the waste toner storage member when the belt unit is in the contact position, and interrupts the residual toner from being conveyed from the cleaning member to the waste toner storage member when the belt unit is in the separated position.

Abstract: Relationships of LB1>LR1 and LN1<LN2 are satisfied, where LB1 is a length of a first contact area in which a first brush roller and an endless belt come into contact with each other. LR1 is a length of a second contact area in which the first roller and the endless belt come into contact with each other. LN1 is a length of an area in which the first contact area and the second contact area overlap with each other. A third contact area is an area in which the second brush roller and the endless belt come into contact with each other. A fourth contact area is an area in which the second roller and the endless belt come into contact with each other. LN2 is a length of an area in which the third contact area and the fourth contact area overlap with each other.