摘要:
A cleaning device for an image forming apparatus such as an electrophotographic copying machine wherein the cleaning device is usable for removing toner from a photosensitive member. The cleaning device is effective to provide a solution to the problem caused by the toner particles and other foreign matter gripped between the cleaning member and the photosensitive member. According to this invention, the problems are solved by controlling the manner of bringing the cleaning member into contact with the photosensitive member and/or the manner of bringing the same out of contact.
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 within an image forming system, including an image bearing member, a processing device for acting on the image bearing member, a housing for supporting the image bearing member and the processing 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 from the housing at least in the retard position and contacts a housing guide member. An image forming system includes a mounting device for mounting such a process cartridge, an air flow generating device for generating an air flow passing between the housing guide member and the cover, a transfer device for transferring a developed image formed on the image bearing member onto a recording medium, and a conveying device for conveying the recording medium.
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:
An apparatus for detecting the amount of developer includes an agitation member for agitating developer contained in a developer container, and a detection member for detecting the position of the upper surface of the developer contained in the developer container, and interlocked with the agitating operation of the agitation member, the detection member is made movable above the upper surface of the developer. With the structure thus arranged, the remaining of the developer can be detected exactly even when the remaining developer become very small. Also, with the structure thus arranged, the operation of the detection member is finished in a position not to hinder the agitating operation of the agitation member, thus enabling the agitation member to continue its normal operation after the detection of the remaining developer is finished.
摘要:
A photosensitive drum includes a cylindrical member having a photosensitive body disposed thereon, and first and second helical gears arranged axially side-by-side on one end of the cylindrical member. The first helical gear is disposed axially outward of the second helical gear, and the first helical gear has an outer diameter greater than an outer diameter of the second helical gear. The first helical gear meshes with a drive gear to rotatingly drive the drum. A sleeve gear of a developing sleeve is selectively engaged with one of the first and second helical gears, depending upon a kind of toner used.