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
摘要:
A process cartridge, and a main assembly of an image forming apparatus to which the cartridge is detachably mountable. The main assembly includes a motor, a driving rotatable member for receiving a driving force from the motor, and a twisted hole substantially coaxial with the driving rotatable member. The process cartridge includes an electrophotographic photosensitive drum, a process device actable on the drum, and a projection provided at a longitudinal end of the drum. When the driving rotatable member rotates with the hole and the projection engaged with each other, a rotational driving force is transmitted from the driving rotatable member to the drum through engagement between the hole and the projection with the projection being pulled into the hole.
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 cartridge detachably mountable to an image forming apparatus, includes: a developer container; and a pressure regulating device for regulating the air pressure in the developer container. The pressure regulating device includes a hollow portion having a vent and an elastic filter being compressed into the hollow.
摘要:
A developing device including a developer bearing member for bearing and conveying a developer thereon, the developer bearing member having at a lengthwise end portion thereof a spacer for keeping a spacing between it and an image bearing member, a sealing member for preventing the leakage of the developer from the lengthwise end portions of the developer bearing member, a conductive member disposed in the vicinity of the sealing member, and an insulation member provided between the sealing member and the conductive member for electrically insulating the sealing member from the conductive member, the insulation member having a cleaning portion for cleaning the spacer.
摘要:
A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The process cartridge includes an electrophotographic photosensitive member, a developing member for developing an electrostatic latent image forming on the electrophotographic photosensitive member, a developing device frame including a first frame portion supporting the developing member and a second frame portion having a developer accommodating portion for accommodating a developer to be used for developing the electrostatic latent image by the developing member, first and second electroconductive portions disposed to be spaced from each other to detect, by the main assembly of the apparatus, a remaining amount of the developer in the process cartridge, a cartridge contact electrically connectable with the main assembly of apparatus when the process cartridge is mounted to the main assembly of the apparatus, the cartridge contact being disposed in the second frame portion, a contacting electrode electrically connected with the cartridge contact, the contacting electrode being disposed in the second frame portion, and a first electroconductive portion contact electrically connected with the first electroconductive portion, the first electroconductive portion contact being disposed in the first frame portion. The first electroconductive portion contact and the contacting electrode contact each other between spaced apart connecting portions or between an elastic seal located between the first frame portion and the second frame portion.
摘要:
A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus for forming an image on a recording material, includes an electrophotographic photosensitive drum; process mechanism(s) actable on the drum; and a projection provided at a longitudinal end of the drum, for engagement with a twisted hole provided in the main assembly of the apparatus, when the process cartridge is mounted to the main assembly, preferably by movement of the hole in interrelation with an operable member. When a driving rotatable member in the main assembly is rotated with the projection engaged with the hole, rotational driving force is transmitted to the drum through the projection/hole engagement. The projection is drawn into the hole, and the process cartridge frame is contacted longitudinally to a regulating member in the main assembly of the apparatus to longitudinally position the drum relative to the main assembly.
摘要:
An electrophotographic image forming apparatus for forming an image on a recording material includes an electrophotographic photosensitive drum; a charging device for charging the photosensitive drum; a developing device for developing a latent image formed on the photosensitive drum into a toner image; a transfer device for transferring the toner image onto the recording material; a fixing device for fixing the toner image on the recording material; a motor; a main assembly side gear for receiving driving force from the motor; a twisted hole formed substantially at a center of the gear, the hole having a polygonal cross-section; a twisted prism projection 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 the hole and the projection with the projection being pulled into the hole; and a moving device for imparting relative movement between the hole and the projection in a longitudinal direction of the photosensitive drum.
摘要:
A process cartridge detachably mountable within an image forming system, includes an image bearing member, a process device for processing the image bearing member, a housing for supporting the image bearing member and the process device, and a cover shiftable between a protecting position where the image bearing member is protected and a retard position where the cover is retarded from the protecting position. The cover is spaced apart between 20-50 mm from the housing at least in the retard position. An image forming system includes mounting equipment for mounting such a process cartridge, an airflow generator for generating an airflow passing through between the housing and the cover, a transfer mechanism for transferring a developed image formed on the image bearing member onto a recording medium, and a conveying mechanism for conveying the recording medium.