摘要:
A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus includes a cartridge frame; an electrophotographic photosensitive member; a process device actable on the photosensitive member, a first cartridge guiding portion for being guided by a main assembly guide provided in the main assembly of the apparatus when the process cartridge is mounted to the main assembly of the apparatus, the first cartridge guiding portion being provided at one end, with respect to a mounting direction in which the process cartridge is mounted to the main assembly of apparatus of the cartridge frame; and a second cartridge guiding portion for being guided by the main assembly guide provided in the main assembly of the apparatus when the process cartridge is mounted to the main assembly of apparatus, the second cartridge guiding portion being provided at the other end, with respect to the mounting direction, of the cartridge frame, wherein when the process cartridge is mounted to the main assembly of the apparatus, the first and second cartridge guiding portions are at different heights.
摘要:
A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus includes (a) a developing unit for supporting an electrophotographic photosensitive drum and a developing member for developing an electrostatic latent image formed on the electrophotographic photosensitive drum with a developer; (b) a charging unit for supporting a charging member for charging the electrophotographic photosensitive drum, the charging unit being rotatable in a first rotational direction about a rotational center relative to the developing unit in which the charging member moves toward the electrophotographic photosensitive drum and in a second rotational direction about the rotational center in which the charging member moves away from the electrophotographic photosensitive drum.
摘要:
A developing cartridge for developing a latent image formed on the photosensitive member, which is detachably mountable to a main assembly of an electrophotographic image forming apparatus, the developing cartridge includes a developing member for developing a latent image formed on the photosensitive member; a toner accommodating portion for accommodating toner to be used for developing a latent image formed on the photosensitive member by the developing member; a driving force receiving portion for receiving, from the main assembly, driving force for rotating the developing member when the developing cartridge is mounted to the main assembly, the driving force receiving portion being provided at a leading side of the developing cartridge when the developing cartridge is mounted to the main assembly in a longitudinal direction of the developing member; an exposed developing bias contact, provided at the leading side, for receiving from the main assembly a developing bias to be supplied to the developing member when the developing cartridge is mounted to the main assembly; wherein the driving force receiving portion is disposed inside the developing bias contact in the longitudinal direction of the developing member.
摘要:
A developing cartridge for developing a latent image formed on a photosensitive member is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The developing cartridge includes a developing member for developing a latent image; a toner accommodating portion for accommodating toner to be used for developing the latent image; a first and a second recess for engagement with a first and a second positioning member, respectively, provided in the main assembly, the first and the second recess are provided at a leading side end portion of the developing cartridge when the developing cartridge is mounted to the main assembly in a longitudinal direction of the developing member; a driving force for receiving member, provided in the second recess, for receiving driving force for rotating the developing member from the main assembly; a third recess for engagement with a third positioning member provided in the main assembly, the third recess being provided at a trailing side end portion of the developing cartridge when it is mounted to the main assembly in the longitudinal direction of the developing member, wherein the third recess is provided in a free end portion of an arm projected in a direction crossing with the longitudinal direction of the developing member.
摘要:
A cartridge is provided with an electrode portion for connecting a main assembly contact. The cartridge electrode includes a first contact portion, exposed toward an outside of a frame of the cartridge, contacted to a main assembly contact provided in the apparatus main assembly. The cartridge electrode further includes a second contact portion provided for being electrically connected to a process means of the cartridge, and an injection receiving portion into which resin is injected when the cartridge electrode is molded into the frame. The electroconductive resin injected from the injection receiving portion is branched to mold the first contact portion and the second contact portion so that an electroconductive path for electrically connecting the main assembly contact and the process means is formed.
摘要:
Provided is a sealing member for preventing leakage of a developer from a developer containing portion of a process cartridge detachable from a main body of an electrophotographic image forming apparatus to an outside of the developer containing portion. The sealing member is made of a thermoplastic elastomer that contains at least a copolymer and a plasticizer. In a molecular weight distribution of a tetrahydrofuran soluble matter of the thermoplastic elastomer measured by gel permeation chromatography, at least one peak is present in each of a region of a molecular weight of 4,000 or less and a region of a molecular weight of 30,000 to 200,000, and a percentage of a component of a molecular weight of 800 or less in a region of a molecular weight of 5,000 or less is 30% or less.
摘要:
A plurality of process cartridges, each including an electrophotographic photosensitive drum, and a process device actable on the photosensitive drum, are detachably mountable to an electrophotographic image forming apparatus for forming an image of a recording medium. The image forming apparatus includes an opening and closing member; an intermediate transfer member or a recording medium bearing member provided in the opening and closing member such that the intermediate transfer member can face the process cartridges under a condition in which the opening and closing member is closed, and the intermediate transfer member can be separated from the process cartridges under a condition in which the opening and closing member is open; and a moving guide for holding the process cartridges. The moving guide is moved in interlocking relationship with a closing motion of the opening and closing member from a load position, to which the process cartridges are loaded, to a mount position, in which the process cartridges are capable of performing an image forming operation, such that the process cartridges mounted to the load position can be moved to the mount position.
摘要:
A cartridge is detachably mountable to an electrophotographic-image-forming-apparatus main assembly including light emitting and receiving portions. The cartridge includes an electrophotographic photosensitive drum, a developing member, a driving force receiving portion, first and second rotatably connected frames, the first supporting the drum and having a memory, and the second supporting the developing member and having a developer accommodating portion, a main-assembly-contactable electrical contact, first and second light guides whose respective entrance and exit are opposable to the emitting and receiving portions, respectively, first and second cartridge positioning portions engageable with first and second main assembly positioning portions, and a cartridge limiting portion abutting a main assembly regulating portion to limit rotation of the cartridge which otherwise occur about the cartridge positioning portions when the driving force receiving portion receives a driving force from the main assembly.
摘要:
A process cartridge including a flexible member capable of taking a protection position in which the flexible member protects an electrophotographic photosensitive member, and a retraction position in which the flexible member retracts from the protection position, a support member having a support portion on which the flexible member is supported, provided pivotably on a cartridge frame and adapted to move the flexible member from the protection position to the retraction position, and a regulating member provided on the flexible member so as to regulate the positions of creases which occur on the flexible member in accordance with a pivotal movement of the support member, and which extend in parallel with the longitudinal direction of the member of an electrophotographic photosensitive member, the flexible member being folded on the creases and moved to the retraction position.
摘要:
A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, includes a drum, a developing member, a cartridge frame including a developer accommodating portion, a first light guide adjacent one end of the cartridge frame and a leading end with respect to a cartridge mounting direction and including a light entrance portion opposed to an emitting portion to receive detecting light when the process cartridge is mounted to the main assembly and guiding the detecting light to cross with a developer accommodating space in the developer accommodating container, a second light guide adjacent the one end and the leading end, and including a light exit portion and directing, the detecting light having passed through the developer accommodating space to the light receiving portion, and a memory member communicatable with the main assembly and adjacent the one end o and the leading and including a cartridge electrical contact.