摘要:
A charging apparatus includes a charging roller, contactable to an object to be charged, for charging the object to be charged, the charging roller being provided with a rotation shaft, an electroconductive bearing for supporting the rotation shaft, a contact member for urging the bearing to press-contact the charging roller to the object to be charged, wherein a first electric energy supply path is established from the contact member to the rotation shaft through the bearing to supply electric energy from the contact member to the rotation shaft, a power supply contacted to a peripheral surface of the rotation shaft, wherein the contact member urges the power supply to press-contact the power supply to the peripheral surface of the rotation shaft, wherein a second electric energy supply path is established to supply electric energy from the contact member to the rotation shaft through the power supply member, and the power supply member is movable in a direction of urging of the contact member independently of the bearing.
摘要:
A method of supplying toner into a toner accommodation container for accommodating the toner to be used for developing a latent image formed on an electrophotographic photosensitive member includes opening a cover member for covering an opening provided in a toner accommodation container; mounting a first toner supply container containing the toner to be supplied to the toner accommodation container, to the opening; pushing the first toner supply container into the toner accommodation container in interrelation with closing of the cover member; closing the cover member; supplying the toner from the first toner supply container to the toner accommodation container by opening a toner supply port of the first toner supply container pushed in the toner accommodation container; wherein a volume of the first toner supply container can be reduced in a direction crossing with a longitudinal direction of the toner supply container.
摘要:
A process cartridge which is detachably mountable to a main assembly of an image forming apparatus includes an electrophotographic photosensitive member, a process device actable on the photosensitive member, a memory element, and a cartridge connector for electrically connecting the memory with the main assembly when the process cartridge is mounted to the main assembly. The cartridge connector is electrically connectable with a main assembly connector provided in the main assembly. The cartridge also includes a contact portion for moving a shutter for protecting the main assembly connector from a protecting position to a retracted position in response to mounting of the process cartridge to the main assembly.
摘要:
A process cartridge which is detachably mountable to a main assembly of an image forming apparatus, the process cartridge includes an electrophotographic photosensitive member, wherein the process cartridge is detachably mountable to the main assembly in the direction substantially perpendicular to an axis of an electrophotograpic photosensitive drum; process device actable on the photosensitive member; a connector having a memory; a positioning member disposed coaxially with the photosensitive member and engageable with a positioning groove provided in the main assembly; a regulating portion contactable to a fixed portion of the main assembly to regulate rotation of the the process cartridge about the positioning member when the process cartridge is mounted to the main assembly; wherein the connector is disposed above the positioning member.
摘要:
A cleaning frame used in a process cartridge which is detachably mountable to a main body of an electrophotographic image forming apparatus and which includes an electrophotographic photosensitive drum, and a cleaning member for removing developer adhered to the electrophotographic photosensitive drum, the process cartridge including a drum attaching portion for attaching the electrophotographic photosensitive drum, a cleaning member attaching portion for attaching the cleaning member, one end wall provided at one longitudinal end of the cleaning frame, the other end wall provided at the other longitudinal end of the cleaning frame, an exposure opening for receiving information light to be illuminated onto the electrophotographic photosensitive drum attached to the drum attaching portion when the process cartridge is mounted to the main body of the electrophotographic image forming apparatus, and a reinforcing member provided between the one end wall and the other end wall along the longitudinal direction of the cleaning frame said reinforcing member being disposed at a side opposite to the side at which the exposure opening is provided in the cleaning frame a direction transverse to the longitudinal direction of the cleaning frame, wherein a gap between said reinforcing member and a deep side wall opposed to said cleaning member attached to said cleaning member attaching portion at a side opposite to the side at which said exposure opening is provided in the direction transverse to the longitudinal direction of said cleaning frame is 0.5 mm to 3.0 mm.
摘要:
A developing apparatus includes a developer bearing body, a drive transmission gear, a support member, and a developing frame body, and the support member has an engaging portion for engaging with the developing frame body in a position opposite to a position where the drive force is transmitted to the drive transmission gear with respect to a rotating center of the developer bearing body.
摘要:
A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, includes an electrophotographc photosensitive drum; a developlng member for developing an electrostatic latent image formed on the electrophotographic photosensitive drum with a developer; charging member for electrically charging the drum; a drum frame supporting the charging member and the drum; a developer accomodation frame having a developer accomodating portion for accomodating the developer; a supporting frame supporting the drum frame and the developer accomodation frame adjacent one logitudinal end of the drum; a developing bias contact, provided on the supporting frame, for receiving a developing bias voltage applied to the developing member from the main assembly of the apparatus when the process cartridge is mounted to the main assembly of the apparatus; and a charging bias contact, provided on the supporting frame, for receiving a charging bias applied to the charging member from the main assembly when the process cartridge is mounted to the main assembly.
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; a charger for charging the drum; a developing member for developing an latent image on the drum; a developer accommodating portion; an engaging member for being supported by a receiving portion of a movable member provided in the main assembly when the engaging member is in the main assembly; a first guide provided on an upper portion of the frame; a second guide provided on a lower portion of the frame; a third guiding portion provided on a lower portion the frame; a driving force receiving member provided at a downstream end portion and receiving a driving force from a driving force transmitting member provided in the main assembly; and a positioning portion projected from the frame toward an upstream side in the inserting direction, and disposed coaxially with the drum, and wherein when the engaging member supported by the receiving portion is released to permit the cartridge to lower to the mount position, the positioning portion is supported by a positioning recess provided in the main assembly.
摘要:
The present invention solves problems caused by ozone within a process cartridge detachably mountable in a main body of an image forming apparatus. The process cartridge includes an electrophotographic photosensitive member, a charging device for charging the electrophotographic photosensitive member, frames for supporting the electrophotographic photosensitive member and the charging device, first holes for taking in air, provided at one end portion of the frames in the longitudinal direction and opened at a portion near one end portion of the charging device in the longitudinal direction, and second holes for discharging air, provided at another end portion of the opened at portion near another end portion of the charging device in the longitudinal direction.
摘要:
A process cartridge removably mounted to a main body of an electrophotographic image forming apparatus includes an electrophotographic photosensitive member, a process member for acting on the electrophotographic photosensitive member, and a cartridge frame. The cartridge further includes a first projection guided by the main body when the process cartridge is mounted on or dismounted from the main body, the first projection protruding from one end and being coaxial with the electrophotographic photosensitive member, a guiding second projection projecting from an opposite surface and being coaxial with the photosensitive member, a third guiding projection located substantially above the first projection when the process cartridge is mounted on the main body, and a fourth guiding projection located substantially above the second projection in a state in which the process cartridge is mounted on the main body. The distance between the first projection and the third projection is different from the distance between the second projection and the fourth projection.