Abstract: An apparatus body includes an elastic body-side terminal, which is a terminal for supplying electricity to a cartridge. The cartridge includes: a developing apparatus that develops as a developer image an electrostatic latent image formed on an image bearing member; a cartridge-side terminal for supplying electricity from the apparatus body; and a frame having an opening that exposes the cartridge-side terminal. In a process of attaching the cartridge to the apparatus body, the body-side terminal makes contact with the cartridge-side terminal by being inserted into the opening. The body-side terminal presses the cartridge-side terminal in a state in which the cartridge is attached to the apparatus body.

Abstract: A cartridge includes a frame; a rotatable member for carrying a developer; a blade member contacting the rotatable member; a first seal member provided extended in a rotational axis direction of the rotatable member between the blade member and the frame so as to contact the blade member and the frame; a second seal member provided extended in a direction crossing the rotational axis direction of the rotatable member between the rotatable member and the frame so as to have a first surface contacting the first seal member; and a second surface provided on the frame and extended in a direction crossing the rotational axis direction of the rotatable member so as to contact the first seal member. The first seal member includes a portion sandwiched between the first surface and the second surface with respect to the rotational axis direction.

Abstract: A process cartridge includes a drum unit configured to rotatably hold a photosensitive drum, a developing unit that is assembled in such a manner as to be rotatable relative to the drum unit and includes a developing roller, gap maintaining members provided to the photosensitive drum or the developing roller on both end portions of the photosensitive drum in an axial direction, and urging members configured to bias the developing unit toward the drum unit. The urging members are respectively disposed on outer sides of the gap maintaining members disposed at both end portions in the axial direction. The drum unit or the developing unit includes an electric contact portion configured to come into contact with an electric contact of an image forming apparatus when the process cartridge is attached to the image forming apparatus, the electric contact portion being disposed between the gap maintaining members in the axial direction.

Abstract: A developer container or a developing device including a sheet member having a plurality of holes and a plurality of protruded portions to be inserted into the holes.

Abstract: An apparatus body includes an elastic body-side terminal, which is a terminal for supplying electricity to a cartridge. The cartridge includes: a developing apparatus that develops as a developer image an electrostatic latent image formed on an image bearing member; a cartridge-side terminal for supplying electricity from the apparatus body; and a frame having an opening that exposes the cartridge-side terminal. In a process of attaching the cartridge to the apparatus body, the body-side terminal makes contact with the cartridge-side terminal by being inserted into the opening. The body-side terminal presses the cartridge-side terminal in a state in which the cartridge is attached to the apparatus body.

Abstract: A developing device includes a developer chamber in which developer is accommodated, a developer supplying chamber in which a developer carrying member for developing a latent image forming on an image bearing member is rotatably provided and which is provided with an opening communicating with the developer chamber, a sealing member for sealing the opening, and a feeding member for feeding the developer from the developer chamber to the developer supplying chamber through the opening. The feeding member is rotatably provided in the developer chamber and has a rotation center below a rotation center of the developer carrying member. A part of the developer supplying chamber defining a periphery of the opening and a part of a lower inner surface of the developer supplying chamber are provided in the same plane, and the same plane is flush with or provided above a lower inner surface of the developer chamber.

Abstract: A conveying device in which a circle formed of a trajectory drawn by a distal end of an engaging portion and an axial line of a driven shaft intersect each other when viewing in an axial direction of a drive shaft, and a slope of the driven shaft with respect to a horizontal direction is an angle not larger than an angle of repose of a developer when viewing in the axial direction of the drive shaft is provided.

Abstract: A developing device includes a developer chamber in which developer is accommodated; a developer supplying chamber in which a developer carrying member for developing a latent image forming on an image bearing member is rotatably provided and which is provided with an opening communicating with the developer chamber; a sealing member for sealing the opening; and a feeding member for feeding the developer from the developer chamber to the developer supplying chamber through the opening, wherein the feeding member is rotatably provided in the developer chamber and has a rotation center below a rotation center of the developer carrying member. A part of the developer supplying chamber defining the opening and a part of a lower inner surface of the developer supplying chamber are provided in the same plane, and the same plane is flush with or provided above a lower inner surface of the developer chamber.