摘要:
A developing device to be mounted on an electrophotographic image forming apparatus main body and used for developing an electrostatic latent image formed on an electrophotographic photosensitive member, includes a developing container, an electrode attached to the inside of the developing container, a conductive member for securing electric conduction from the inside to the outside of the developing container, wherein the conductive member and the electrode are electrically connected by the conductive member being press-fit in a fitting portion provided in the electrode, and an elastic sealing member press-fit in a gap between the conductive member and the developing container.
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 has an electrophotographic photosensitive drum, a developing member, a first frame for supporting the electrophotographic photosensitive drum, a second frame for supporting the developing member, a coupling pin for coupling the first frame to the second frame to be rotatable relative to each other, a first hole through which the coupling pin penetrates and which is provided in the first frame, a second hole into which the coupling pin is press-fitted and which is provided in the first frame, and a closed portion provided at a leading end of the coupling pin in a press fit direction in order to close the second hole.
摘要:
A developer container with an increased capacity that does not enlarge a process cartridge or an apparatus main body used therewith includes flanges on an opposite surface of a developing frame respectively contacting flanges formed on the upper part and the lower part on a wall surface of a container frame, on which a developer feeding opening is formed. To form the developer, container the flanges are welded at their connection portions by ultrasonic welding. Then, a flange of a lid frame is connected to a flange of the container frame by ultrasonic waves, thereby forming a developer container, in which the container frame is connected with the developing frame with the developer feeding opening being put between the frames.
摘要:
A developing device is detachably mountable to the main body of an electrophotographic image forming apparatus. The device is for developing an electrostatic latent image on an electrophotographic photosensitive member and includes a developing member for developing the electrostatic latent image formed on the electrophotographic photosensitive member, a developer container containing therein a developer to be used to effect the development of the electrostatic latent image by the developing member, a developing frame for supporting the developing member, a welding rib provided along the lengthwise direction of the developing frame to connect the developer container and the developing frame together by-ultrasonic welding, and a plurality of reinforcing members provided on the back of that surface of the developing frame on which the welding rib is provided, along the lengthwise direction of the welding rib, to increase the strength of the developing frame. The welding rib provided on the developing frame is disposed so as to be located between the plurality of reinforcing members as viewed from a direction intersecting with the surface and the back, and the developer container and the developing frame are connected together by the ultrasonic welding.
摘要:
The process cartridge includes an electrophotographic photosensitive drum, a first unit frame body supporting the drum, a second unit frame body having a developing device and a developer containing portion, a first connection frame body for connecting one end of the first and second unit frame bodies with respect to the axial direction of the drum, a second connection frame body for connecting the other end of the first and second unit frame bodies with respect to the axial direction, first, second, and third fixation devices for fixing the first and second connection frame bodies to the first and second unit frame bodies through abutment, and a fourth fixation device for fixing the second connection frame body and the second unit frame body to each other by filling a gap between the second connection frame body and the second unit frame body.
摘要:
A process cartridge includes: an electrophotographic photosensitive drum; a charging member for charging the drum; a developing member for developing with toner an electrostatic latent image formed on the drum; a first frame supporting the drum and the charging member; a second frame supporting the developing member; a first hole provided in the first frame; a second hole provided in the first frame; a third hole provided in the second frame; a connecting pin extending through the first hole, the second hole, and the third hole to rotatably connect the second frame to the first frame; and a reinforcing portion provided on the downstream side of the first frame with respect to the direction in which the connecting pin is force-fitted so as to restrain deformation of the second hole when force-fitting the connecting pin into the second hole.
摘要:
A method of remanufacturing a process cartridge includes a step of removing a pin to thereby separate a drum unit and a developing container, a step of separating a developing frame and a developer frame from each other to thereby separate the developing container, a step of resupplying the developer to a developer containing portion of the developer frame, a step of superposing a reseal member on end portion seal members provided at lengthwise one end and other end of a developer supply opening for supplying the developer contained in a developer containing portion to a developing roller, and interposing the reseal member on each of widthwise one end and other end of the developer supply opening along the lengthwise direction of the developer supply opening, and reuniting the developing frame and the developer frame, and a step of reuniting the reconstructed developing container and the drum unit.
摘要:
A disassembling tool pushes first and second coupling members out of a process cartridge that also has an electrophotographic photosensitive member, and first and second coupling members for rotatably coupling first and second frames of the cartridge together. The disassembling tool includes first and second base bodies, first and second engagement portions provided on the first and second base bodies respectively, and engageable with the cartridge to position the cartridge when the tool is mounted on the cartridge, and first and second pushing-out portions provided for movement relative to the first and second base bodies, respectively, for pushing out the first and second coupling members, respectively. The first and second engagement portions are provided at a location opposed to the first and second pushing-out portions, respectively, in a movement direction in which the first and second pushing-out portions are moved, respectively.