摘要:
In order to prevent the eccentricity of a rotary shaft for rotatably supporting an image bearing member used with an image forming apparatus when the image bearing member is rotated, a projection is provided on an outer peripheral surface of the rotary shaft fitted into a fitting hole formed in a casing for securing the rotary shaft.
摘要:
In order to prevent the eccentricity of a rotary shaft for rotatably supporting an image bearing member used with an image forming apparatus when the image bearing member is rotated, a projection is provided on an outer peripheral surface of the rotary shaft fitted into a fitting hole formed in a casing for securing the rotary shaft.
摘要:
The present invention provides a process cartridge mountable to an image forming apparatus. The cartridge includes an image bearing member, a processor for acting on the image bearing member, a driving force receiver provided at one end of the image bearing member, a protection member shiftable between a protection position to protect the image bearing member and a retract position, a first projection provided on the side of a toner containing portion, a guide member protruded in the direction perpendicular to the moving direction of the image bearing member, a second projection protruded in the moving direction of the image bearing member, and a third projection protruded from the protection member.
摘要:
A process cartridge detachably mountable to a main assembly of an image forming apparatus includes an electrophotographic photosensitive member; a process cartridge actable on the photosensitive member; a cartridge frame; a first projection for positioning the process cartridge relative to the main assembly when the process cartridge is mounted to the main assembly, the first projection being outwardly projected from a first frame of the cartridge frame adjacent an axial end of the photosensitive member; a second projection for positioning the process cartridge relative to the main assembly when the process cartridge is mounted to the main assembly, the second projection being outwardly projected from a second frame of the cartridge frame adjacent another axial end of the photosensitive member; a confining contact portion, in the cartridge frame, for contacting a first fixed portion of the main assembly and cooperating with the first projection and second projection to correctly position the process cartridge relative to the main assembly, when the process cartridge is mounted to the main assembly; and a releasing contact portion, in the cartridge frame, for contacting a second fixed portion of the main assembly to provide a pivot of rotation of the process cartridge, when the process cartridge is demounted from the main assembly.
摘要:
A developing apparatus for developing an electrostatic latent image includes a fixed electrode for receiving a developing bias voltage; a rotatable and electrically conductive sleeve for carrying developer to a developing zone to supply developer to the electrostatic latent image; a flange fixed to an end of the sleeve, the flange including an electrode supporting portion; and an elastic electrode fixedly supported on the flange, the elastic electrode including a first portion engaged with the electrode supporting portion, a second portion press-contacted to the sleeve, and a third portion elastically and slidably press-contacted to the fixed electrode.
摘要:
A cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus includes a cartridge frame; a developing member for developing an electrostatic latent image formed on an electrophotographic photosensitive member; a first guide, provided projected outwardly of the cartridge frame at one longitudinal end side of the developing member, for guiding the cartridge when the cartridge is mounted to the main assembly of the apparatus a second guide, provided projected outwardly of the cartridge frame at the other longitudinal end side of the developing member, for guiding the cartridge when the cartridge is mounted to the main assembly of the apparatus; and a developing bias contact, provided exposed on the first guide for receiving a developing bias to be applied to the developing member from the main assembly of the apparatus when the cartridge is mounted to the main assembly of the apparatus.
摘要:
Using two or more developer replenishing units, each of which has a first storage for storing identification information related to developer and a second storage for storing history information related to the developer, if the identification information read out from each developing replenishing unit accords with unique information stored in an image forming main body, the history information is read out from the developing replenishing unit and analyzed to judge whether the utilization amount of the developing replenishing unit is at the end of its life. If the developing replenishing unit is not at the end of its life, the discharge amount of the developer replenished from the developer replenishing unit is controlled according to the history information and image output results formed by means of the image forming main body.
摘要:
The present invention relates to a seal member contacted with a rotatable body for sealing a developer borne on the rotatable body which has a surface layer contacted with the rotatable body, wherein the seal member's surface layer includes felt. The surface layer has a first portion formed by a plurality of fibers being intertwined, and a second loop portion in which the fibers are raised in a loop shape.
摘要:
The present invention provides a sheet feeding apparatus comprising: a first sheet accommodating means shiftable in a predetermined position from a sheet supply position for supplying a sheet, a first sheet supply means for feeding out the sheet from the first sheet accommodating means positioned in the sheet supply position, a feeding means for feeding the sheet fed out by the first sheet supply means, a second sheet accommodating means for accommodating sheets, a second sheet supply means for feeding out the sheet from the second sheet accommodating means, a guide means movable between a first position intersecting a moving path of the first sheet accommodating means and where guiding the sheet fed out by the second sheet supply means to the feeding means and a second position where not guiding the sheet, a detecting means for detecting the passage of the sheet through the guide means and for emitting a detection signal, and an inhibiting means for inhibiting the movement of the first sheet accommodating means in response to the detection signal from the detecting means.
摘要:
A developing cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The apparatus includes: a frame; a developing device for developing an electrostatic latent image formed on an electrophotographic photosensitive member; a first projected portion engaging a first positioning portion provided in the main assembly of the apparatus when the cartridge is mounted to the main assembly to position the cartridge; a second projected portion engaging a second positioning portion provided in the main assembly when the cartridge is mounted to the main assembly to regulate rotation of the cartridge about the first positioning portion; and a cartridge guide member contacting a main assembly guide portion to guide the cartridge when the cartridge is mounted to the main assembly. The second projected portion is urged in a direction to contact the second positioning portion when the cartridge is set in the main assembly.