Abstract: A developing cartridge for developing a latent image formed on the photosensitive member, wherein the developing cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus, the developing cartridge includes a cartridge frame; developing means for developing, with toner, the latent image formed on the photosensitive member of the main assembly of the apparatus; a first projected portion outwardly projected from the cartridge frame portion adjacent one longitudinal end of the developing means; a second projected portion outwardly projected from the cartridge frame portion adjacent the other longitudinal end of the developing means; a first urging force receptor portion outwardly projected from the cartridge frame portion adjacent one longitudinal end of the developing means; a second urging force receptor portion outwardly projected from the cartridge frame portion adjacent the other longitudinal end of the developing means; a first contact portion outwardly projected

Abstract: A process cartridge detachably mountable to a main assembly of an image forming apparatus includes an electrophotographic photosensitive member; a process cartridge actable on the photosensitive member; a cartridge frame; a first projection for positioning the process cartridge relative to the main assembly when the process cartridge is mounted to the main assembly, the first projection being outwardly projected from a first frame of the cartridge frame adjacent an axial end of the photosensitive member; a second projection for positioning the process cartridge relative to the main assembly when the process cartridge is mounted to the main assembly, the second projection being outwardly projected from a second frame of the cartridge frame adjacent another axial end of the photosensitive member; a confining contact portion, in the cartridge frame, for contacting a first fixed portion of the main assembly and cooperating with the first projection and second projection to correctly position the process cartridge

Abstract: A developing cartridge for developing a latent image formed on the photosensitive member, wherein the developing cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus, the developing cartridge includes a cartridge frame; a developing member for developing a latent image formed on the photosensitive member; a driving force receiving member for receiving driving force for rotating the developing member from the main assembly of the apparatus when the developing cartridge is mounted to the main assembly, the driving force receiving member being exposed from a portion of the cartridge adjacent one longitudinal end of the developing member; a developing bias contact for receiving a developing bias to be applied to the developing member from the main assembly when the cartridge is mounted to the main assembly; a toner accommodating portion for accommodating the toner to be used for development by the developing member; a first light-transmissive member and a second l

Abstract: A cleaning device for removing toner from an electrophotographic photosensitive member usable with an electrophotographic image forming apparatus includes a cleaning member for removing toner from the electrophotographic photosensitive member; a toner transporting portion having a toner transporting member for transporting the toner removed from the electrophotographic photosensitive member by the cleaning member; a toner accommodating portion for accommodating the toner transported by the toner transporting portion; a separation member provided between the toner transporting portion and the toner accommodating portion and having an accommodation opening for permitting the toner to be fed by the toner transporting portion to the toner accommodating portion.

Abstract: A shutter for a developing cartridge for developing an electrostatic latent image formed on an electrophotographic photosensitive member, the developing cartridge being detachably mountable relative to a main assembly of an electrophotographic image forming apparatus, the improvement being that the shutter is movable between a covering position for covering a portion through which a developing member is exposed from a cartridge frame and a retracted position for exposing the developing member from the cartridge frame; and the shutter includes a developing cartridge discriminating portion which is capable of entering a main assembly side discriminating portion provided in the main assembly to discriminate the developing cartridge when the developing cartridge discriminating portion is aligned with the main assembly side discriminating portion, upon mounting of the developing cartridge to the main assembly.

Abstract: A recycling method for a process cartridge and a process cartridge produced thereby are provided.

Abstract: A developing cartridge for developing a latent image formed on an electrophotographic photosensitive member, which is detachably mountable relative to a main assembly of an electrophotographic image forming apparatus, the developing cartridge includes a cartridge frame; a developing roller for developing the electrostatic latent image formed on the electrophotographic photosensitive member; toner accommodating portion for accommodating toner to be used for development by the developing roller; a driving force receiving member for receiving driving force for rotating the developing roller, from the main assembly of apparatus when the developing cartridge is mounted to the main assembly, wherein the driving force receiving member is exposed from a portion of the cartridge frame, provided at one longitudinal end portion; a developing bias contact for receiving a developing bias to be applied to the developing roller from the main assembly of the apparatus, when the developing cartridge is mounted the main assemb

Abstract: A developing cartridge for developing a latent image formed on the photosensitive member, wherein the developing cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus, the developing cartridge includes a cartridge frame; a developing member for developing an electrostatic latent image formed on an electrophotographic photosensitive member; a toner accommodating portion for accommodating the toner to be used for use of the development by the electrostatic latent image; a driving force receiving member for receiving driving force for rotating the developing member from the main assembly of the electrophotographic image forming apparatus when the developing cartridge is mounted to the main assembly; a shutter movable between a cover position for covering a portion through which the developing member is exposed from the cartridge frame and a retracted position for permitting the developing means to be exposed; a flexible seal projected from a cartridge frame portio

Abstract: A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, includes a cartridge frame; an electrophotographic photosensitive drum having a cylinder and a photosensitive layer thereon; process device actable on the photosensitive drum; a drum shaft for rotatably supporting the photosensitive drum on the cartridge frame, the drum shaft extending through the photosensitive drum; a grounding member for electrically grounding the photosensitive drum, the grounding member having a cylinder contacting portion contacted to an inside of the cylinder and a drum shaft contact portion having an inclined portion for contact with the drum shaft in a direction of insertion of the drum shaft into the photosensitive drum.

Abstract: A developing cartridge for developing a latent image formed on the photosensitive member is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The developing cartridge includes a cartridge frame, a developer device for developing, with toner, the latent image formed on the photosensitive member of the main assembly of the apparatus when the cartridge is mounted to the main assembly of the electrophotographic image forming apparatus, and a first projected portion projected from one longitudinal end of the frame. The first projected portion is supported by a first supporting member provided in the main assembly when the cartridge is mounted to the main assembly of the electrophotographic image forming apparatus. The cartridge also includes a second projected portion projected from the other longitudinal end of the frame.

Abstract: A toner accommodating container usable with a process cartridge detachably mountable to a main assembly of an image forming apparatus, wherein the process cartridge contains an electrophotographic photosensitive member and a processing device actable on the electrophotographic photosensitive member, the container includes a toner accommodating portion for accommodating toner to be used for developing a latent image formed on the electrophotographic photosensitive member; a cover member provided to cover an opening of the toner accommodating portion; a grip portion provided on the cover member; a partition wall extending in the toner accommodating portion along a short side thereof with a gap between the partition wall and the cover member, and wherein the partition wall and the cover member are contactable to each other when the toner accommodating container is handled with the grip portion, and the cover member is deformed.

Abstract: A developing cartridge for developing a latent image formed on the photosensitive member, which is detachably mountable to a main assembly of an electrophotographic image forming apparatus, includes a cartridge frame; a developing device for developing, with toner, the latent image formed on the photosensitive member of the main assembly of the apparatus when mounted to the main assembly of the electrophotographic image forming apparatus; a driving force receptor for receiving, from the main assembly, a driving force for rotating the developing means when the cartridge is mounted to the main assembly, the driving force receptor being provided and exposed adjacent one end of the cartridge frame portion in a longitudinal direction of the developing means; a toner accommodating portion for accommodating the toner; a shutter movable between a closing position for covering a portion of the developing device exposed from the cartridge frame and an opening position for exposing the developing device; and a locking m

Abstract: A developing device for developing a latent image on an image carrying member includes a container member containing toner; a development roller provided at a development opening of the container member; a first toner conveying member disposed so as to face the development roller, wherein a direction of rotation of said first developer conveying member is opposite to a direction of rotation of said developer carrying member; and a second toner conveying member provided further downstream from the first conveying member as viewed in the direction of rotation of the development roller and having a higher conveying capability than the first toner conveying member. The toner circulation capability around the development roller is very high.

Abstract: A developing device which is capable of being detachably mounted to a rotary unit of an image forming apparatus and which includes a developer carrying member for forming a development region together with an image carrying member and rotating as carrying a developer, a developer containing section for containing the developer to be supplied to the developer carrying member, and a pressure relief portion provided in a surface substantially perpendicular to the rotational axis of the rotary unit, of the developer containing section.

Abstract: A toner container for containing toner to be used for developing a latent image formed on an electrophotographic photosensitive member by a developing device, usable with a process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, the process cartridge containing the photosensitive member and the developing device includes: a first frame having a toner supply opening for supplying the toner to the developing device and a mounting portion for mounting a rotatable stirring member for stirring the toner contained in the toner container; a second frame coupled with the first frame and having an outward projection without interference with a rotational region of the stirring member; wherein the toner container is formed by coupling the first frame and second frame.

Abstract: A toner refilling method is disclosed for a process cartridge detachably mountable to a main assembly of an image forming apparatus. The process cartridge includes an electrophotographic photosensitive member, a device for developing a latent image formed on the electrophotographic photosensitive member, a toner accommodating portion for accommodating toner to be used for development by the developing device, a cleaner for removing the toner remaining on the electrophotographic photosensitive member, and a removed toner accommodating portion for accommodating the toner removed from the electrophotographic photosensitive member by the cleaner.

Abstract: A developing apparatus includes a rotatable developer carrying member for carrying a developer; an electrode to be supplied with a bias voltage; a coil spring, provided in an end portion of the developer carrying member, for electrical connection between the electrode and the developer carrying member.