Abstract: An image forming apparatus including a rotatable developer container, a receiving device which receives the container and is inserted in a direction along a rotational axis of the container and which receives the developer discharged from the container when the container is in a first position, and a regulating member provided on the container. The regulating member prevents, during transportation of the image forming apparatus, the container from moving to the first position from a second position which is upstream of the first position with respect to an inserting direction of the container and in which the developer is not discharged from the container.

Abstract: An image forming apparatus includes a developing unit, a transfer section, and a calculator. The developing unit includes an image carrier carrying a developer image. The transfer section includes a transfer belt, a cleaning member, and a container, and transfers the developer image onto a print medium. The transfer belt is disposed in contact with the image carrier. The cleaning member removes a developer attached to the transfer belt. The container contains the developer removed by the cleaning member. The calculator calculates a collection amount on the basis of medium information of the print medium. The collection amount is an amount of the developer collected in the container.

Abstract: A toner container includes a container body, an opening, a cover, a toner discharge port, a shutter, a cylindrical structure, protrusions, and an identifier. The shutter is attached to the cover and includes a main shutter covering the toner discharge port. The main shutter moves between a closed position to close the toner discharge port and an open position to open the toner discharge port. The protrusions are on both sides of the cover and protrude in a direction orthogonal to a toner container mounting direction. The identifier is on the cover to indicate a toner color. The cylindrical structure's leading end is downstream of leading ends of the protrusions in the mounting direction. The main shutter's leading end is downstream of the protrusions' leading ends in the mounting direction when the main shutter is in the closed position. The protrusions are downstream of the identifier in the mounting direction.

Abstract: The disclosure provides an image forming apparatus for accommodating photosensitive assembly having first assembly shaft. The image forming apparatus includes casing, fixing mechanism and cover plate. The casing has first guide groove, and the first assembly shaft is configured to be slidably disposed in the first guide groove. The fixing mechanism is movably mounted on the casing so as to be movable between a blocking state and a releasing state. The cover plate is movably connected the casing so as to be movable between an opened position and a closed position. When the cover plate is moved to the closed position, the cover plate forces the fixing mechanism to move to the blocking state to block the first guide groove and cover a bottom surface of the first guide groove so as to retain the first assembly shaft of the photosensitive assembly between the fixing mechanism and the bottom surface.

Abstract: An apparatus includes a forming unit, a cleaning mechanism that cleans a transparent member of a scanning device of the forming unit, a counter that counts a number of image-formed sheets, which are sheets of a recording medium on which images have been formed by the forming unit, the counter performing counting with a first count value in a case where the forming unit performs image formation in a first mode and performing counting with a second count value larger than the first count value in a case where the forming unit performs image formation in a second mode higher in image forming speed than the first mode, and a control unit that controls the cleaning mechanism to clean the transparent member in response to the number of image-formed sheets counted by the counter reaching a predetermined number of sheets.

Abstract: A developing cartridge includes: a casing; a developing roller; a shaft extending in a first direction; a first inclined surface; a second inclined surface; an elastic member; and a first protrusion. The shaft is movable in the first direction relative to the casing and the developing roller, and is movable in the second direction together with the same. The first inclined surface is positioned at one end portion of the shaft, while the second inclined surface is positioned at another end portion of the shaft. The first and second inclined surfaces are inclined relative to the first direction. The first protrusion is movable in the first direction together with the second inclined surface. The shaft is movable from a first position to a second position when the second inclined surface receives a pressing force directed in a direction from the another end portion to the one end portion.

Abstract: A developing cartridge may include a housing configured to hold toner. The cartridge may further include a developing roller including a developing roller shaft, a supply roller including a supply roller shaft, a developing electrode and a supply electrode. The developing electrode and supply electrode may be configured to guide an electrical contact of an image forming apparatus in one or more directions. In some examples, the developing electrode and supply electrode may have angled surfaces that extend toward one another.

Abstract: An image forming apparatus includes a photosensitive drum, an image forming unit including an optical scanning device, a cleaning mechanism configured to clean a transparent window of the optical scanning device, and a control unit configured to cause the cleaning mechanism to perform a cleaning operation on the transparent window. The number of pages on which image formation is allowed to be performed for recording sheets in a period between cleaning operations performed by the cleaning mechanism is smaller in a case where image formation is performed on recording sheets in which the amount of generation of paper dust is large than in a case where image formation is performed on recording sheets in which the amount of generation of paper dust is small.

Abstract: Provided is an electrophotographic belt having excellent creep resistance and digital reproducibility. The electrophotographic belt is composed of a biaxially stretched cylindrical film, and the film includes a matrix including a thermoplastic resin and an electroconductive domain including an ionic electroconductive agent, and when a surface resistivity of the film in a circumferential direction is defined as A, and a surface resistivity of the film in a direction orthogonal to the circumferential direction is defined as B, A?B is satisfied, and a tensile modulus of elasticity of the film in the circumferential direction is 1.0 GPa or more and 3.0 GPa or less.

Abstract: A fixing device includes a roller, an endless belt, and a heat generating member disposed in a space inside the endless belt, extending in a width direction of the endless belt, and pressing the endless belt against the roller. A sheet is passed through a nip formed between the roller and a portion of the endless belt pressed by the heat generating member, such that an image on the sheet is fixed thereto. The heat generating member includes first and second heat generating portions that are adjacent to each other along the width direction, and the first portion heat generating is independently operable from the second heat generating portion.

Abstract: A drawer includes: a photosensitive drum rotatable about a drum axis extending in an axial direction; and a frame to which a developing cartridge including a developing roller is attachable. The developing cartridge is attachable to the frame in a state where an outer circumferential surface of the developing roller faces an outer circumferential surface of the photosensitive drum. The frame is configured to move the developing roller in a separation direction in which the outer circumferential surface of the developing roller moves away from the outer circumferential surface of the photosensitive drum. The frame includes a first guide roller for guiding the developing cartridge in the axial direction. The first guide roller is configured to move the developing cartridge in the separation direction relative to the frame in response to the movement in the axial direction of the developing cartridge relative to the frame.

Abstract: An image forming apparatus can inhibit an occurrence of downtime or shorten the downtime even in a case in which a mode for performing image formation and a position of, for example, a primary transfer member does not match. The image forming apparatus includes photosensitive drums each configured to bear a toner image, primary transfer members, an intermediate transfer belt, an abutment/separation mechanism configured to move the primary transfer members, and a controller. The controller brings the primary transfer members into contact with the photosensitive drums in a full-color mode, separates the primary transfer members from the photosensitive drums in a monochrome mode, and sets the position of the primary transfer members to a predetermined position between that in the full-color mode and the monochrome mode in a standby mode.

Abstract: There is provided a conductive roller for electrophotographic equipment in which a shaft made of core metal has excellent rust resistance. The conductive roller includes a shaft made of core metal, a protective layer formed on the outer periphery of the shaft, and a conductive rubber elastic layer formed on the outer periphery of the protective layer. In a conductive roller for electrophotographic equipment, the conductive rubber elastic layer contains a rubber containing halogen atoms, and the protective layer is formed of a crosslinked material of a composition containing a material obtained by melting and mixing the following components (a) to (c): (a) a polyfunctional maleimide compound having two or more maleimide groups; (b) a benzoxazine compound; and (c) an epoxy resin.

Abstract: An image forming apparatus includes: an image forming unit that forms an unfixed image on a sheet; and a fixing unit that includes a first rotary member and a second rotary member, which are in contact with each other to form a nip part, and that fixes the unfixed image formed in the image forming unit to the sheet by allowing the sheet to pass through the nip part. When a large-width sheet having a larger width than a preceding sheet that has previously passed through the nip part is allowed to pass through the nip part, adjustment in which the first rotary member and the second rotary member are displaced in directions away from each other, while forming the nip part, is performed in the fixing unit.

Abstract: An image forming apparatus includes a device for forming a trace of an image fixing nip, primary transfer nip, secondary transfer nip or developing nip is formed, a detecting device for detecting a width of the nip from the trace of the nip, and a controller for controlling fixing, transferring, developing or image forming parameter in accordance with the nip width detected by the detecting device. Proper image forming conditions are provided against the change of the nip width.

Abstract: An electrophotographic image forming apparatus for forming an image on a recording material includes an electrophotographic photosensitive drum and a developing cartridge including a developing roller for developing an electrostatic latent image formed on the electrophotographic photosensitive drum. A cartridge supporting member is movable, while detachably mounting the developing cartridge, between an inside position which is inside of the main assembly of the apparatus to mount the developing cartridge to the main assembly of the apparatus and an outside position that is outside of the main assembly of the apparatus to remove the developing cartridge from the main assembly of the apparatus.

Abstract: An image forming apparatus includes a photosensitive member; a scan unit configured to scan the photosensitive member with light based on image data, and form a latent image on the photosensitive member; a developing unit configured to form an image on the photosensitive member by attaching toner to the latent image formed on the photosensitive member; and a correction unit configured to correct an exposure amount of the photosensitive member such that a density change of the image in a main scanning direction due to a configuration of the scan unit and a density of the image to be formed is reduced.

Abstract: Provided is an image forming apparatus capable of detecting a type of a sheet accommodated in a sheet feeding tray in advance. The image forming apparatus includes a conveyor, an image former, a fixer, a detector, and a processor. The conveyor conveys the sheet accommodated in the sheet feeding tray along a conveying path. The image former forms an image on the sheet. The fixer fixes the image onto the sheet. The detector is arranged on the conveying path and detects the type of the sheet. The processor executes a sheet type detection mode which is a mode for causing the detector to detect the type of the sheet conveyed by the conveyor before executing an image forming mode which is a mode for causing the image former to form the image and causing the fixer to fix the image.

Abstract: An image forming apparatus includes a rotary member, a web, a moving unit, a detecting unit configured to detect a predetermined position, and a control portion. The control portion informs, in a case where an actual moving amount per one winding operation is a first moving amount, the replacement of the web, if a number of sheets of recording materials on which images have been formed after the predetermined position is detected reaches a first number of sheets. The control portion informs, in a case where the actual moving amount per one winding operation is a second moving amount which is greater than the first moving amount, the replacement of the web, if a number of sheets of recording materials on which images have been formed after the predetermined position is detected reaches a second number of sheets which is less than the first number of sheets.

Abstract: A drawer is moveable between an inner position and an outer position through an opening when a cover is located at an opening position. A waste toner conveying tube is movable in a second direction between a first connection position and a first disconnection position when a drum cartridge is attached to a drawer and the drawer is at the inner position. When the cover moves from a closing position toward the opening position, the waste toner conveying tube moves from the first connection position toward the first disconnection position in conjunction with the movement of the cover. The drawer is movable from the inner position toward to the outer position when the drum cartridge is attached to the drawer, the drawer is at the inner position, and the waste toner conveying tube is at the first disconnection position.