Abstract: A developer container or a developing device including a sheet member having a plurality of holes and a plurality of protruded portions to be inserted into the holes.

Abstract: An image-forming apparatus includes an apparatus main body, a cartridge, a movable member, including an attachment portion for attachment of the cartridge, configured to be movable relative to the apparatus main body in a state such that the cartridge is attached to the attachment portion, a protection member configured to protect the cartridge, an engagement member, provided in the cartridge, configured to be movable to an engagement position where an engagement state of the protection member with the cartridge is secured by the engagement member engaging with the protection member, and to a release position where engagement between the protection member and the engagement member is released and removal of the protection member from the cartridge is allowed, and a release member configured to move the engagement member from the engagement position to the release position by abutting the engagement member, when the cartridge is attached to the attachment portion.

Abstract: A photosensitive cartridge attachable to/detachable from a main body of an image forming apparatus includes a photosensitive member, an attachment unit configured to removably attach a developing cartridge including a developing member that develops a latent image formed on the photosensitive member to the photosensitive cartridge, and a locking member configured to prevent disengaging of the developing cartridge from the attachment unit when the developing cartridge is attached to the attachment unit, wherein the locking member comes into contact, when the photosensitive cartridge to which the developing cartridge has been attached is attached to the main body of the image forming apparatus, with a main body contact member provided to the main body and electrically connects the main body contact member and the developing cartridge.

Abstract: A developing device frame unit supporting a regulating member regulating the layer thickness of developer on a developer carrier. The unit includes a frame having a seal forming portion, first and second, first and second end seals contactable to the carrier surface to prevent carrier-axial-direction leaking of the developer, and a blade sealer sealing between the regulating member and the frame to prevent developer leaking when the regulating member is mounted. The blade sealer is an elastomer resin material which is injection-molded with a metal mold and in the seal forming portion where the end seals are provided. The blade sealer connects the end seals with each other, and a protrusion provided by a squeezed-out portion of the resin material is provided by injecting, into a space defined by the metal mold, the seal forming portion, and the end seal seals, a resin material volume larger than a volume of the space.

Abstract: An image-forming apparatus includes an apparatus main body, a cartridge, a movable member, including an attachment portion for attachment of the cartridge, configured to be movable relative to the apparatus main body in a state such that the cartridge is attached to the attachment portion, a protection member configured to protect the cartridge, an engagement member, provided in the cartridge, configured to be movable to an engagement position where an engagement state of the protection member with the cartridge is secured by the engagement member engaging with the protection member, and to a release position where engagement between the protection member and the engagement member is released and removal of the protection member from the cartridge is allowed, and a release member configured to move the engagement member from the engagement position to the release position by abutting the engagement member, when the cartridge is attached to the attachment portion.

Abstract: A developer supply cartridge detachably mountable to a main assembly of an image forming apparatus includes: a developer accommodating portion; a shutter portion movable between a closed position and an open position; and a movable portion for moving the shutter portion. The movable portion is movable between a first position where the shutter portion is positioned in the closed position. When the movable portion is positioned in a position other than a first position provided in an apparatus main assembly side of an image forming apparatus before being engaged with the first engaging portion, the movable portion is moved, until being engaged with the first engaging portion, to the first position by engagement thereof with a second engaging portion provided in the accommodate main assembly side.

Abstract: A photosensitive cartridge attachable to/detachable from a main body of an image forming apparatus includes a photosensitive member, an attachment unit configured to removably attach a developing cartridge including a developing member that develops a latent image formed on the photosensitive member to the photosensitive cartridge, and a locking member configured to prevent disengaging of the developing cartridge from the attachment unit when the developing cartridge is attached to the attachment unit, wherein the locking member comes into contact, when the photosensitive cartridge to which the developing cartridge has been attached is attached to the main body of the image forming apparatus, with a main body contact member provided to the main body and electrically connects the main body contact member and the developing cartridge.

Abstract: A developer supply cartridge detachably mountable to a main assembly of an image forming apparatus includes: a developer accommodating portion; a shutter portion movable between a closed position and an open position; and a movable portion for moving the shutter portion. The movable portion is movable between a first position where the shutter portion is positioned in the closed position. When the movable portion is positioned in a position other than a first position provided in an apparatus main assembly side of an image forming apparatus before being engaged with the first engaging portion, the movable portion is moved, until being engaged with the first engaging portion, to the first position by engagement thereof with a second engaging portion provided in the accommodate main assembly side.

Abstract: A developing device frame unit supporting a regulating member regulating the layer thickness of developer on a developer carrier. The unit includes a frame having a seal forming portion, first and second, first and second end seals contactable to the carrier surface to prevent carrier-axial-direction leaking of the developer, and a blade sealer sealing between the regulating member and the frame to prevent developer leaking when the regulating member is mounted. The blade sealer is an elastomer resin material which is injection-molded with a metal mold and in the seal forming portion where the end seals are provided. The blade sealer connects the end seals with each other, and a protrusion provided by a squeezed-out portion of the resin material is provided by injecting, into a space defined by the metal mold, the seal forming portion, and the end seal seals, a resin material volume larger than a volume of the space.

Abstract: A developing device frame unit supporting a regulating member regulating the layer thickness of developer on a developer carrier. The unit includes a frame having a seal forming portion, first and second, first and second end seals contactable to the carrier surface to prevent carrier-axial-direction leaking of the developer, and a blade sealer sealing between the regulating member and the frame to prevent developer leaking when the regulating member is mounted. The blade sealer is an elastomer resin material which is injection-molded with a metal mold and in the seal forming portion where the end seals are provided. The blade sealer connects the end seals with each other, and a protrusion provided by a squeezed-out portion of the resin material is provided by injecting, into a space defined by the metal mold, the seal forming portion, and the end seal seals, a resin material volume larger than a volume of the space.

Abstract: A process cartridge includes an electrophotographic photosensitive member, a developing roller, a cleaning blade, a developer container including an opening, a developer conveyance member, a driving force transmission member having a driving force transmitted from the developer conveyance member, a seal member configured to seal the opening, and a winding member configured to wind the seal member such that the opening is opened, and the driving force transmission member is configured to take a first position at which the driving force is not transmitted to the winding member and a second position at which the driving force is transmitted to the winding member, and wherein the driving force transmission member is further configured to move from the first position to the second position after rotation of the developer conveyance member.

Abstract: A cartridge is detachably insertable into a main assembly of the image forming apparatus. The main assembly includes an opening, and urging, positioning, and regulating portions. The cartridge includes an urgable portion urged by the urging portion in a direction crossing a cartridge-inserting direction after cartridge insertion. The cartridge also includes a positionable portion positioned by contacting the positioning portion by the urging portion moving the cartridge in the crossing direction, and a regulatable portion regulated by the regulating portion to prevent cartridge movement toward the opening when the positionable portion contacts the positioning portion. The regulatable portion is at the cartridge rear and is brought, by cartridge movement in the crossing direction by the urging portion, behind the regulating portion with respect to the inserting direction to prevent cartridge movement toward the opening.

Abstract: A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, wherein the apparatus includes a supporting member, a movable member for moving the supporting member in a horizontal direction and upward and downward directions, an operating member for moving the movable member, and a regulating portion, the process cartridge includes an electrophotographic photosensitive drum; process means actable on the drum; a portion to be supported for being supported by the supporting member when the process cartridge is mounted to the main assembly of the apparatus; and a portion-to-be-regulated for being regulated by being contacted by the regulating portion to regulate movement of the process cartridge in the horizontal direction, when the supporting member is moved, by movement of the movable member by operation of the operating member and in the horizontal direction and the upward direction while supporting the process cartridge, wherein when the supporting member is m

Abstract: A process cartridge includes an electrophotographic photosensitive member, a developing roller, a cleaning blade, a developer container including an opening, a developer conveyance member, a driving force transmission member having a driving force transmitted from the developer conveyance member, a seal member configured to seal the opening, and a winding member configured to wind the seal member such that the opening is opened, and the driving force transmission member is configured to take a first position at which the driving force is not transmitted to the winding member and a second position at which the driving force is transmitted to the winding member, and wherein the driving force transmission member is further configured to move from the first position to the second position after rotation of the developer conveyance member.

Abstract: A developing device frame unit supporting a regulating member regulating the layer thickness of developer on a developer carrier. The unit includes a frame having a seal forming portion, first and second, first and second end seals contactable to the carrier surface to prevent carrier-axial-direction leaking of the developer, and a blade sealer sealing between the regulating member and the frame to prevent developer leaking when the regulating member is mounted. The blade sealer is an elastomer resin material which is injection-molded with a metal mold and in the seal forming portion where the end seals are provided. The blade sealer connects the end seals with each other, and a protrusion provided by a squeezed-out portion of the resin material is provided by injecting, into a space defined by the metal mold, the seal forming portion, and the end seal seals, a resin material volume larger than a volume of the space.

Abstract: A developer supplying cartridge including a supply developer containing portion, a developer supplying port for supplying a developer in the supply developer containing portion to a developing device via a supplied port of the developing device, and a supplying port shutter unit that opens and closes the developer supplying port and that includes a housing member covering the developer supplying port, a cylindrical member which is rotatably disposed in the housing member, and provided with a through-hole corresponding to the developer supplying port, and which assumes, by its rotation, a developer supply allowing position where the developer supplying port and the through-hole communicate with each other and a developer supply stopping position where the developer supplying port is closed, and a scraping member which is abutted on an outer circumferential surface of the cylindrical member to scrape off developer adhering to the outer circumferential surface.