摘要:
A process cartridge detachably mountable to a main assembly of an image forming apparatus includes a cartridge frame; an electrophotographic photosensitive member; a process device actable on the electrophotographic photosensitive member; a toner accommodating portion for accommodating toner for developing a latent image formed on the electrophotographic photosensitive member; a filling opening for filling the toner to the toner accommodating portion, wherein the filling opening is openably sealed by a cap; a transfer opening for permitting transfer of a toner image formed on the electrophotographic photosensitive member onto a recording material, wherein the transfer opening is provided on the cartridge frame; a protection cover for protecting the electrophotographic photosensitive member; a supporting member for supporting the protection cover so that the protection cover is movable between a protection position in which the protection cover covers the transfer opening and a retracted position in which it opens the transfer opening; a mounting member mounted to the cartridge frame so as to be opposed to the cap mounted to the filling opening.
摘要:
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.
摘要:
A process cartridge detachably mountable to a main assembly of an image forming apparatus includes a drum frame for supporting an electrophotographic photosensitive drum; a developing frame mounted to a developing roller for developing a latent image formed on the electrophotographic photosensitive drum; a toner frame having a toner accommodating portion for accommodating a toner to be used by the developing roller, wherein the toner frame is provided with a coupling member for swingably coupling with the drum frame, and is provided with a grip for gripping the process cartridge.
摘要:
A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus comprises an electrophotographic photosensitive drum, a development roller for developing a latent image formed on the electrophotographic photosensitive drum, a toner accommodating portion for accommodating toner to be used by the development roller for development, a photosensitive drum frame for supporting the electrophotographic photosensitive drum, a development frame including the toner accommodating portion, and a support frame including a first toner leakage preventing member positioned at one longitudinal end of the development roller and a second toner leakage preventing member positioned at the other longitudinal end of the development roller. The development frame and the support frame are rotatably connected about a positioning member and, in this connected state, a portion of the development frame is welded to a portion of the support frame so that the development frame and the support frame are joined together.
摘要:
A developing device includes a frame; a developer carrying member including a first cylindrical portion and a second cylindrical portion provided at an end of the first cylindrical portion; and a magnet provided in the developer carrying member, extending from inside of the developer carrying member to outside thereof. A first electroconductive portion is supported on the magnet; and a second electroconductive portion is electrically connected with an inner surface of the first cylindrical portion and in slidable contact with the first electroconductive portion. A third electroconductive portion includes a first contact portion electrically connected with the first electroconductive portion and a second contact portion. The third electroconductive portion is electrically connected with an electrical contact of a main assembly of an image forming apparatus so that a developing bias is applied to the developer carrying member.
摘要:
A toner accommodating container usable with a process cartridge detachably mountable to a main assembly of an image forming apparatus, wherein the process cartridge includes an electrophotographic photosensitive member and a process means actable on the electrophotographic photosensitive member includes a toner accommodating portion for accommodating toner usable for developing a latent image formed on the electrophotographic photosensitive member; a partition wall extending in the toner accommodating portion in a direction along a short side of the toner accommodating portion to define a plurality of space therein; a toner filling opening, at a longitudinal end of the toner accommodating portion, for permitting toner to be filled into the toner accommodating portion; and a through-passage extending from one longitudinal end to the other longitudinal end along a length of the toner accommodating portion so as to permit the toner to be supplied into the spaces.
摘要:
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; a 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 and having a length sufficient to be supported by the cartridge frame at one end thereof and at the other end thereof wherein the drum shaft is provided on its outer periphery adjacent its one end with projections and recesses, and is engaged with a hole in the cartridge frame; and a preventing member for preventing the drum shaft from disengaging from the cartridge frame.
摘要:
A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, wherein the main assembly includes a motor, a main assembly side gear for receiving driving force from the motor, a hole defined by twisted surfaces, the hole being substantially coaxial with the gear, and a main assembly side grounding contact provided in the hole, the process cartridge includes an electrophotographic photosensitive drum; process mechanisms actable on the photosensitive drum; and a projection engageable with the twisted surfaces, the projection being provided at a longitudinal end of the photosensitive drum, wherein when the main assembly side gear rotates with the hole and projection engaged with each other, rotational driving force is transmitted from the gear to the photosensitive drum through engagement between the hole and the projection; and a cartridge side grounding contact electrically connected with the electrophotographic photosensitive drum for electrically grounding the electrophotographic photosensitive drum when the process cartridge is mounted to the main assembly of the apparatus, the cartridge side grounding contact being provided on the projection so as to be electrically connectable with the main assembly side grounding contact
摘要:
A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The main assembly includes a motor, a gear receiving a driving force from the motor, a hole defined by twisted surfaces substantially coaxial with the gear and having a grounding contact. The cartridge includes an electrophotographic photosensitive drum, and a projection engageable with the twisted surfaces. The projection is provided at a longitudinal end of the drum. When the gear rotates with the hole and projection engaged with each other, a rotational driving force is transmitted from the gear to the drum through engagement between the hole and the projection. The cartridge also includes a grounding contact electrically connected with the drum, for electrically grounding the drum when the cartridge is mounted to the main assembly, and provided on the projection to be electrically connectable with the main assembly grounding contact.
摘要:
A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, wherein the main assembly includes a motor, a main assembly side gear for receiving driving force from the motor, a hole defined by twisted surfaces, the hole being substantially coaxial with the gear, and a main assembly side grounding contact provided in the hole, the process cartridge includes an electrophotographic photosensitive drum; process mechanisms actable on the photosensitive drum; and a projection engageable with the twisted surfaces, the projection being provided at a longitudinal end of the photosensitive drum, wherein when the main assembly side gear rotates with the hole and projection engaged with each other, rotational driving force is transmitted from the gear to the photosensitive drum through engagement between the hole and the projection; and a cartridge side grounding contact electrically connected with the electrophotographic photosensitive drum for electrically grounding the electrophotographic photosensitive drum when the process cartridge is mounted to the main assembly of the apparatus, the cartridge side grounding contact being provided on the projection so as to be electrically connectable with the main assembly side grounding contact