Abstract: A developing apparatus including a developer carrying member, a developer layer regulating member and a flight developer regulating member, wherein the developer carrying member is provided in opposed relationship with an image bearing member and carries a developer thereon, and in an opposed portion between the image bearing member and the developer carrying member, an oscillating electric field is formed between the image bearing member and the developer carrying member, and the developer is caused to fly from the developer carrying member to the image bearing member, and the developer layer regulating member regulates a layer of developer on the developer carrying member, and the flight developer regulating member is mounted on the developer layer regulating member, and regulates an area in which the developer flies in the opposed portion.

Abstract: A developer container for an image forming apparatus, said developer container including a rotatable member; a container body for containing a developer; a sealing member, provided in the container body, for preventing leakage of the developer out of the container body; a sheet, provided in the container body, for contacting the rotatable member to guide the developer into the container body; a gap provided between the container body and the sealing member and covered by the sheet; a communication hole provided in the container body in fluid communication with the gap; packing material filled in the gap through the communication hole for preventing leakage of the developer through the gap.

Abstract: A process cartridge detachably mountable on a main body of an electrophotographic image forming apparatus, and including a first unit for supporting an electrophotographic photosensitive member and a charging member for acting on the photosensitive member, a second unit provided with a force imparting portion, an electrically conductive connecting member for pivotally connecting the first unit and the second unit together, and an electrically conductive member provided in the first unit, wherein the electrically conductive connecting member receives a bias to be supplied from the main body to the charging member when the process cartridge is mounted on the main body, the electrically conductive member is provided in contact with the connecting member to supply the charging member with the bias received by the connecting member when the process cartridge is mounted on the main body, and the force imparting portion imparts to the electrically conductive member an urging force for the electrically conductive mem

Abstract: A process cartridge having an insertion construction for a connecting pin swingably supporting a developing unit where there are achieved an improvement in assembly property, a minimization of container deformation, and prevention of coming-off of the connecting pin due to a small press-fitting region. The connecting pin swingably supporting the developing unit is formed of a styrene-based resin composite, and, by injecting a terpene solvent from a cutout of a photosensitive drum unit frame to the outer periphery of the connecting pin, integral connection is effected between the photosensitive drum unit frame and the connecting pin, and further, between the photosensitive drum unit frame and a drum bearing member. Due to a press-fit portion between the connecting pin and the photosensitive drum unit frame, no terpene solvent flows to the developing unit side.

Abstract: A process cartridge having an insertion construction for a connecting pin swingably supporting a developing unit where there are achieved an improvement in assembly property, a minimization of container deformation, and prevention of coming-off of the connecting pin due to a small press-fitting region. The connecting pin swingably supporting the developing unit is formed of a styrene-based resin composite, and, by injecting a terpene solvent from a cutout of a photosensitive drum unit frame to the outer periphery of the connecting pin, integral connection is effected between the photosensitive drum unit frame and the connecting pin, and further, between the photosensitive drum unit frame and a drum bearing member. Due to a press-fit portion between the connecting pin and the photosensitive drum unit frame, no terpene solvent flows to the developing unit side.

Abstract: A developing apparatus including a developer carrying member, a developer layer regulating member and a flight developer regulating member, wherein the developer carrying member is provided in opposed relationship with an image bearing member and carries a developer thereon, and in an opposed portion between the image bearing member and the developer carrying member, an oscillating electric field is formed between the image bearing member and the developer carrying member, and the developer is caused to fly from the developer carrying member to the image bearing member, and the developer layer regulating member regulates a layer of developer on the developer carrying member, and the flight developer regulating member is mounted on the developer layer regulating member, and regulates an area in which the developer flies in the opposed portion.

Abstract: A process cartridge detachably mountable on a main body of an electrophotographic image forming apparatus, and including a first unit for supporting an electrophotographic photosensitive member and a charging member for acting on the photosensitive member, a second unit provided with a force imparting portion, an electrically conductive connecting member for pivotally connecting the first unit and the second unit together, and an electrically conductive member provided in the first unit, wherein the electrically conductive connecting member receives a bias to be supplied from the main body to the charging member when the process cartridge is mounted on the main body, the electrically conductive member is provided in contact with the connecting member to supply the charging member with the bias received by the connecting member when the process cartridge is mounted on the main body, and the force imparting portion imparts to the electrically conductive member an urging force for the electrically conductive mem